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Artykuły w czasopismach na temat „Nickelate Perovskites”

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Data publikacji: 6 września 2023

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1

Wang, Xiaoli, Shilei Wang, Chao Liu, Chuanyan Fan, Lu Han, Feiyu Li, Tieyan Chang i in. "High pO2 Flux Growth and Characterization of NdNiO3 Crystals". Crystals 13, nr 2 (19.01.2023): 180. http://dx.doi.org/10.3390/cryst13020180.

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Single crystals of the perovskite nickelate NdNiO3 with dimensions of up to 50 μm on edge have been successfully grown using the flux method at a temperature of 400 °C and oxygen pressure of 200 bar. The crystals were investigated by a combination of techniques, including high-resolution synchrotron X-ray single-crystal and powder diffraction and physical property measurements such as magnetic susceptibility and resistivity. Resistivity measurements revealed a metal-insulator transition (MIT) at TMIT~180 K with apparent thermal hysteresis; however, no superlattice peaks or peak splitting below TMIT, which corresponds to a structural transition from Pbnm to P21/n, was observed. The successful growth of NdNiO3 crystals at relatively low temperatures and oxygen pressure provides an alternative approach for preparing single crystals of interesting perovskites such as RNiO3 (R = Sm-Lu) and parent phases of superconducting square planar nickelates.
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2

Tarutin, Artem, Anna Kasyanova, Gennady Vdovin, Julia Lyagaeva i Dmitry Medvedev. "Nickel-Containing Perovskites, PrNi0.4Fe0.6O3–δ and PrNi0.4Co0.6O3–δ, as Potential Electrodes for Protonic Ceramic Electrochemical Cells". Materials 15, nr 6 (15.03.2022): 2166. http://dx.doi.org/10.3390/ma15062166.

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Protonic ceramic fuel cells (PCFCs) offer a convenient means of converting chemical energy into electricity with high performance and efficiency at low- and intermediate-temperature ranges. However, in order to ensure good life-time stability of PCFCs, it is necessary to ensure rational chemical design in functional materials. Within the present work, we propose new Ni-based perovskite phases of PrNi0.4M0.6O3–δ (where M = Co, Fe) for potential utilization in protonic ceramic electrochemical cells. Along with their successful synthesis, functional properties of the PrNi0.4M0.6O3–δ materials, such as chemical compatibility with a number of oxygen-ionic and proton-conducting electrolytes, thermal expansion behavior, electrical conductivity, and electrochemical behavior, were comprehensively studied. According to the obtained data, the Co-containing nickelate exhibits excellent conductivity and polarization behavior; on the other hand, it demonstrates a high reactivity with all studied electrolytes along with elevated thermal expansion coefficients. Conversely, while the iron-based nickelate had superior chemical and thermal compatibility, its transport characteristics were 2–5 times worse. Although, PrNi0.4Co0.6O3–δ and PrNi0.4Fe0.6O3–δ represent some disadvantages, this work provides a promising pathway for further improvement of Ni-based perovskite electrodes.
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3

Zhang, Zhen, Yifei Sun i Hai-Tian Zhang. "Quantum nickelate platform for future multidisciplinary research". Journal of Applied Physics 131, nr 12 (28.03.2022): 120901. http://dx.doi.org/10.1063/5.0084784.

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Perovskite nickelates belong to a family of strongly correlated materials, which have drawn broad attention due to their thermally induced metal-to-insulator transition. Recent discoveries show that orbital filling mediated by ion intercalation can trigger a colossal non-volatile conductivity change in nickelates. The coupling and interaction between two types of charge carriers (i.e., ions and electrons) enable nickelate as an exotic mixed conductor for electronic, biological, and energy applications. In this Perspective, we first summarize the fundamentals and recent progresses in the manipulation of ground states of perovskite nickelates by controlling orbital filling via ion intercalation. Then, we present a comprehensive overview of perovskite nickelate as a unique platform for vast cutting-edge research fields, including neuromorphic computing, bio-electronic interfaces, as well as electrocatalysis applications by taking advantage of such electron-filling-controlled modulation phenomena. Finally, we provide an overview of future perspectives and remaining challenges toward the exploitation and commercialization of quantum nickelates for future multidisciplinary research.
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4

Li, Yueying, Xiangbin Cai, Wenjie Sun, Jiangfeng Yang, Wei Guo, Zhengbin Gu, Ye Zhu i Yuefeng Nie. "Synthesis of Chemically Sharp Interface in NdNiO3/SrTiO3 Heterostructures". Chinese Physics Letters 40, nr 7 (1.06.2023): 076801. http://dx.doi.org/10.1088/0256-307x/40/7/076801.

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The nickel-based superconductivity provides a fascinating new platform to explore high-T c superconductivity. As the infinite-layer nickelates are obtained by removing the apical oxygens from the precursor perovskite phase, the crystalline quality of the perovskite phase is crucial in synthesizing high quality superconducting nickelates. Especially, cation-related defects, such as the Ruddlesden–Popper-type (RP-type) faults, are unlikely to disappear after the topotactic reduction process and should be avoided during the growth of the perovskite phase. Herein, using reactive molecular beam epitaxy, we report the atomic-scale engineering of the interface structure and demonstrate its impact in reducing crystalline defects in Nd-based nickelate/SrTiO3 heterostructures. A simultaneous deposition of stoichiometric Nd and Ni directly on SrTiO3 substrates results in prominent Nd vacancies and Ti diffusion at the interface and RP-type defects in nickelate films. In contrast, inserting an extra [NdO] monolayer before the simultaneous deposition of Nd and Ni forms a sharp interface and greatly eliminates RP-type defects in nickelate films. A possible explanation related to the polar discontinuity is also discussed. Our results provide an effective method to synthesize high-quality precursor perovskite phase for the investigation of the novel superconductivity in nickelates.
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5

Moriga, T. "Reduction processes of rare-earth nickelate perovskites LnNiO3 (Ln=La, Pr, Nd)". Solid State Ionics 154-155 (2.12.2002): 251–55. http://dx.doi.org/10.1016/s0167-2738(02)00440-x.

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6

Campi, Gaetano, Nicola Poccia, Boby Joseph, Antonio Bianconi, Shrawan Mishra, James Lee, Sujoy Roy i in. "Direct Visualization of Spatial Inhomogeneity of Spin Stripes Order in La1.72Sr0.28NiO4". Condensed Matter 4, nr 3 (10.08.2019): 77. http://dx.doi.org/10.3390/condmat4030077.

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In several strongly correlated electron systems, the short range ordering of defects, charge and local lattice distortions are found to show complex inhomogeneous spatial distributions. There is growing evidence that such inhomogeneity plays a fundamental role in unique functionality of quantum complex materials. La1.72Sr0.28NiO4 is a prototypical strongly correlated perovskite showing spin stripes order. In this work we present the spatial distribution of the spin order inhomogeneity by applying micro X-ray diffraction to La1.72Sr0.28NiO4, mapping the spin-density-wave order below the 120 K onset temperature. We find that the spin-density-wave order shows the formation of nanoscale puddles with large spatial fluctuations. The nano-puddle density changes on the microscopic scale forming a multiscale phase separation extending from nanoscale to micron scale with scale-free distribution. Indeed spin-density-wave striped puddles are disconnected by spatial regions with negligible spin-density-wave order. The present work highlights the complex spatial nanoscale phase separation of spin stripes in nickelate perovskites and opens new perspectives of local spin order control by strain.
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7

Konysheva, Elena, i John T. S. Irvine. "Evolution of conductivity, structure and thermochemical stability of lanthanum manganese iron nickelate perovskites". Journal of Materials Chemistry 18, nr 42 (2008): 5147. http://dx.doi.org/10.1039/b807145d.

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8

John, Rohit Abraham. "An adaptive device for AI neural networks". Science 375, nr 6580 (4.02.2022): 495–96. http://dx.doi.org/10.1126/science.abn6196.

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9

Huang, Chengzi, Jackson Anderson, Samuel Peana, Xuegang Chen, Shriram Ramanathan i Dana Weinstein. "Perovskite Nickelate Actuators". Journal of Microelectromechanical Systems 30, nr 3 (czerwiec 2021): 488–93. http://dx.doi.org/10.1109/jmems.2021.3067189.

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10

Han, Yujie, Zhijun Zhu, Liang Huang, Yujing Guo, Yanling Zhai i Shaojun Dong. "Hydrothermal synthesis of polydopamine-functionalized cobalt-doped lanthanum nickelate perovskite nanorods for efficient water oxidation in alkaline solution". Nanoscale 11, nr 41 (2019): 19579–85. http://dx.doi.org/10.1039/c9nr06519a.

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11

Catalan, G. "Progress in perovskite nickelate research". Phase Transitions 81, nr 7-8 (lipiec 2008): 729–49. http://dx.doi.org/10.1080/01411590801992463.

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12

Sun, Yifei, Michele Kotiuga, Dawgen Lim, Badri Narayanan, Mathew Cherukara, Zhen Zhang, Yongqi Dong i in. "Strongly correlated perovskite lithium ion shuttles". Proceedings of the National Academy of Sciences 115, nr 39 (13.08.2018): 9672–77. http://dx.doi.org/10.1073/pnas.1805029115.

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Solid-state ion shuttles are of broad interest in electrochemical devices, nonvolatile memory, neuromorphic computing, and biomimicry utilizing synthetic membranes. Traditional design approaches are primarily based on substitutional doping of dissimilar valent cations in a solid lattice, which has inherent limits on dopant concentration and thereby ionic conductivity. Here, we demonstrate perovskite nickelates as Li-ion shuttles with simultaneous suppression of electronic transport via Mott transition. Electrochemically lithiated SmNiO3 (Li-SNO) contains a large amount of mobile Li+ located in interstitial sites of the perovskite approaching one dopant ion per unit cell. A significant lattice expansion associated with interstitial doping allows for fast Li+ conduction with reduced activation energy. We further present a generalization of this approach with results on other rare-earth perovskite nickelates as well as dopants such as Na+. The results highlight the potential of quantum materials and emergent physics in design of ion conductors.
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13

Usenka, A. E., I. M. Kharlamova, L. V. Makhnach, V. V. Pankov i E. V. Korobko. "Mobile oxygen in layered nickelates of perovskite-type". Proceedings of the National Academy of Sciences of Belarus, Chemical Series 59, nr 2 (3.06.2023): 95–104. http://dx.doi.org/10.29235/1561-8331-2023-59-2-95-104.

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The influence of the different types of oxygen on the structure and electrical conductivity of the perovskite-type nickelates were investigated. The nickelates La2NiO4+δ, La0,6Sr1,4NiO4–δ, Sr3Al0,75Ni1,25O7–δ were synthesised using the solidstate reaction route. Phase composition was determined by X-ray powder diffraction analysis. The iodometric titration technique was used to specify the oxygen content of the powders. Oxygen desorption and absorption, including oxygen index variation, were investigated by oxygen solid electrolyte coulometry (OSEC). Electroconductive properties of samples were studied by a standard DC four-point method. Utilizing OSEC technique, three mobile and one regular type of oxygen were observed in the perovskite layered nickelates with P/RS and 2P/RS structure. These four types of mobile oxygen differ in the binding energy to the crystal lattice and crystallographic positions. The desorption-sorption processes of various types of mobile oxygen have different effects on the thermal expansion of crystal lattice parameters. The regular oxygen, occupying the apex of octahedron, affects the lattice parameters most prominently. This type of oxygen changes the character of the temperature dependence of specific resistivity sufficiently. Interstitial oxygen does not yield such anomalies.
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14

Zhang, Hai-Tian, Tae Joon Park, A. N. M. Nafiul Islam, Dat S. J. Tran, Sukriti Manna, Qi Wang, Sandip Mondal i in. "Reconfigurable perovskite nickelate electronics for artificial intelligence". Science 375, nr 6580 (4.02.2022): 533–39. http://dx.doi.org/10.1126/science.abj7943.

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Reconfigurable devices offer the ability to program electronic circuits on demand. In this work, we demonstrated on-demand creation of artificial neurons, synapses, and memory capacitors in post-fabricated perovskite NdNiO 3 devices that can be simply reconfigured for a specific purpose by single-shot electric pulses. The sensitivity of electronic properties of perovskite nickelates to the local distribution of hydrogen ions enabled these results. With experimental data from our memory capacitors, simulation results of a reservoir computing framework showed excellent performance for tasks such as digit recognition and classification of electrocardiogram heartbeat activity. Using our reconfigurable artificial neurons and synapses, simulated dynamic networks outperformed static networks for incremental learning scenarios. The ability to fashion the building blocks of brain-inspired computers on demand opens up new directions in adaptive networks.
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15

Chen, Jikun, Haifan Li, Jiaou Wang, Xinyou Ke, Binghui Ge, Jinhao Chen, Hongliang Dong, Yong Jiang i Nuofu Chen. "Frequency switchable correlated transports in perovskite rare-earth nickelates". Journal of Materials Chemistry A 8, nr 27 (2020): 13630–37. http://dx.doi.org/10.1039/d0ta04663a.

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Delta-temperature thermistor functionality in correlated rare-earth nickelates sheds light on regulations for the working state of electronic devices using AC-frequency dependent impedance without altering the materials.
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16

Lee, Jin Hong, Lourdes Marcano, Raphaël Aeschlimann, Mohamad-Assaad Mawass, Chen Luo, Alexandre Gloter, Julien Varignon, Florin Radu, Sergio Valencia i Manuel Bibes. "Strain tuning of Néel temperature in YCrO3 epitaxial thin films". APL Materials 10, nr 8 (1.08.2022): 081101. http://dx.doi.org/10.1063/5.0095742.

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Epitaxial strain is a useful handle to engineer the physical properties of perovskite oxide materials. Here, we apply it to orthorhombic chromites that are a family of antiferromagnets showing fruitful functionalities as well as strong spin–lattice coupling via antisymmetric exchange interaction along Cr–O–Cr bonds. Using pulsed laser deposition, we grow YCrO3 thin films on various substrates imposing strain levels in the range from −1.8% to +0.3%. The films are stoichiometric with a 3+ valence for Cr both within the films and at their surface. They display an antiferromagnetic spin order below their Néel temperature, which we show can be strongly tuned by epitaxial strain with a slope of −8.54 K/%. A dimensionless figure of merit (defined as the slope normalized by the Néel temperature of bulk) is determined to be 6.1, which is larger than that of other perovskites, such as manganites (5.5), ferrites (2.3), or nickelates (4.6). Density functional theory simulations bring insight into the role of Cr–O bond lengths and oxygen octahedral rotations on the observed behavior. Our results shed light on orthorhombic chromites that may offer an energy-efficient piezo-spintronic operation.
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17

Kotiuga, Michele, Zhen Zhang, Jiarui Li, Fanny Rodolakis, Hua Zhou, Ronny Sutarto, Feizhou He i in. "Carrier localization in perovskite nickelates from oxygen vacancies". Proceedings of the National Academy of Sciences 116, nr 44 (14.10.2019): 21992–97. http://dx.doi.org/10.1073/pnas.1910490116.

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Point defects, such as oxygen vacancies, control the physical properties of complex oxides, relevant in active areas of research from superconductivity to resistive memory to catalysis. In most oxide semiconductors, electrons that are associated with oxygen vacancies occupy the conduction band, leading to an increase in the electrical conductivity. Here we demonstrate, in contrast, that in the correlated-electron perovskite rare-earth nickelates, RNiO3 (R is a rare-earth element such as Sm or Nd), electrons associated with oxygen vacancies strongly localize, leading to a dramatic decrease in the electrical conductivity by several orders of magnitude. This unusual behavior is found to stem from the combination of crystal field splitting and filling-controlled Mott–Hubbard electron–electron correlations in the Ni 3d orbitals. Furthermore, we show the distribution of oxygen vacancies in NdNiO3 can be controlled via an electric field, leading to analog resistance switching behavior. This study demonstrates the potential of nickelates as testbeds to better understand emergent physics in oxide heterostructures as well as candidate systems in the emerging fields of artificial intelligence.
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18

Chen, Jikun, Haiyang Hu, Takeaki Yajima, Jiaou Wang, Binghui Ge, Hongliang Dong, Yong Jiang i Nuofu Chen. "Delta-temperatural electronic transportation achieved in metastable perovskite rare-earth nickelate thin films". Journal of Materials Chemistry C 7, nr 26 (2019): 8101–8. http://dx.doi.org/10.1039/c9tc02327e.

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A delta-temperatural regulation in electronic transportation character was discovered for chemical grown rare-earth nickelates thin films, which maybe useful in locking the working temperature window for electric devices.
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19

Liao, Zhaoliang, Nicolas Gauquelin, Robert J. Green, Knut Müller-Caspary, Ivan Lobato, Lin Li, Sandra Van Aert i in. "Metal–insulator-transition engineering by modulation tilt-control in perovskite nickelates for room temperature optical switching". Proceedings of the National Academy of Sciences 115, nr 38 (5.09.2018): 9515–20. http://dx.doi.org/10.1073/pnas.1807457115.

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In transition metal perovskites ABO3, the physical properties are largely driven by the rotations of the BO6 octahedra, which can be tuned in thin films through strain and dimensionality control. However, both approaches have fundamental and practical limitations due to discrete and indirect variations in bond angles, bond lengths, and film symmetry by using commercially available substrates. Here, we introduce modulation tilt control as an approach to tune the ground state of perovskite oxide thin films by acting explicitly on the oxygen octahedra rotation modes—that is, directly on the bond angles. By intercalating the prototype SmNiO3 target material with a tilt-control layer, we cause the system to change the natural amplitude of a given rotation mode without affecting the interactions. In contrast to strain and dimensionality engineering, our method enables a continuous fine-tuning of the materials’ properties. This is achieved through two independent adjustable parameters: the nature of the tilt-control material (through its symmetry, elastic constants, and oxygen rotation angles), and the relative thicknesses of the target and tilt-control materials. As a result, a magnetic and electronic phase diagram can be obtained, normally only accessible by A-site element substitution, within the single SmNiO3 compound. With this unique approach, we successfully adjusted the metal–insulator transition (MIT) to room temperature to fulfill the desired conditions for optical switching applications.
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20

Guo, Hongquan, Jijie Huang, Hua Zhou, Fan Zuo, Yifeng Jiang, Kelvin H. L. Zhang, Xianzhu Fu, Yunfei Bu, Wei Cheng i Yifei Sun. "Unusual Role of Point Defects in Perovskite Nickelate Electrocatalysts". ACS Applied Materials & Interfaces 13, nr 21 (18.05.2021): 24887–95. http://dx.doi.org/10.1021/acsami.1c04903.

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21

Fernandes, Joana D. G., Dulce M. A. Melo, Anne M. G. Pedrosa, Marcelo J. B. Souza, Danielle K. S. Gomes i Antonio S. Araujo. "Synthesis and catalytic properties of lanthanum nickelate perovskite materials". Reaction Kinetics and Catalysis Letters 84, nr 1 (styczeń 2005): 3–9. http://dx.doi.org/10.1007/s11144-005-0184-7.

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22

Demazeau, Gérard, Alexey Baranov, Igor Presniakov i Alexey Sobolev. "High Oxygen Pressures and the Stabilization of the Highest Oxidation States of Transition Metals – Mössbauer Spectroscopic Characterization of the Induced Electronic Phenomena". Zeitschrift für Naturforschung B 61, nr 12 (1.12.2006): 1527–40. http://dx.doi.org/10.1515/znb-2006-1209.

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High oxygen pressures are a fruitful tool for the stabilization of the highest formal oxidation states of transition metals (Mn+) leading to the strongest chemical bonds; the improvement of the Mn+-O bond covalency induces different electronic phenomena. Among the physical characterizations applied to investigate such phenomena, 57Fe and 119Sn Mössbauer spectra are evaluated for studying unusual electronic configurations, orbital ordering, charge disproportionation and insulator-metal transitions in the perovskites series of 57Fe doped RENiO3 nickelates (RE = rare earths, Y and Tl) and 119Sn doped AEFeO3 ferrates (AE = Ca, Sr).
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23

Chen, Jikun, Haiyang Hu, Jiaou Wang, Takeaki Yajima, Binghui Ge, Xinyou Ke, Hongliang Dong, Yong Jiang i Nuofu Chen. "Overcoming synthetic metastabilities and revealing metal-to-insulator transition & thermistor bi-functionalities for d-band correlation perovskite nickelates". Materials Horizons 6, nr 4 (2019): 788–95. http://dx.doi.org/10.1039/c9mh00008a.

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24

Allen, S. James, Adam J. Hauser, Evgeny Mikheev, Jack Y. Zhang, Nelson E. Moreno, Junwoo Son, Daniel G. Ouellette i in. "Gaps and pseudogaps in perovskite rare earth nickelates". APL Materials 3, nr 6 (czerwiec 2015): 062503. http://dx.doi.org/10.1063/1.4907771.

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25

Cao, Cong, Chunyan Shang, Xu Li, Yinyin Wang, Chunxiao Liu, Xinyi Wang, Shiming Zhou i Jie Zeng. "Dimensionality Control of Electrocatalytic Activity in Perovskite Nickelates". Nano Letters 20, nr 4 (24.03.2020): 2837–42. http://dx.doi.org/10.1021/acs.nanolett.0c00553.

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26

Buitrago, Ivon R., i Cecilia I. Ventura. "Magnetic excitations of perovskite rare-earth nickelates: RNiO3". Journal of Magnetism and Magnetic Materials 394 (listopad 2015): 148–54. http://dx.doi.org/10.1016/j.jmmm.2015.06.056.

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Poznyak, Sergey K., Vladislav V. Kharton, Jorge R. Frade, Alrksey A. Yaremchenko, Ekaterina V. Tsipis, Ivan P. Marozau i Mário G. S. Ferreira. "Electrocatalytic Behavior of Perovskite-Related Cobaltites and Nickelates in Alkaline Media". Materials Science Forum 514-516 (maj 2006): 1391–95. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.1391.

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Dense ceramic anodes of perovskite-type La1-x-ySrxCo1-zAlzO3-δ ( x = 0.45-0.70; y = 0- 0.05; z = 0-0.20) and K2NiF4-type La2Ni1-xMexO4+δ (Me = Co, Cu; x = 0-0.20), synthesized by the glycine-nitrate technique, were assessed for oxygen evolution in alkaline media. The lowest overpotentials are observed for (La0.3Sr0.7)0.97CoO3-δ, which exhibits a significant oxygen deficiency in combination with high conductivity associated with the A-site cation nonstoichiometry compensation mechanism via Co4+ formation. Perovskite-type cobaltite anodes are essentially stable in alkaline solutions, whilst La2NiO4-based electrodes exhibit degradation at the potentials where the oxygen evolution occurs, probably due to the electrochemical oxygen intercalation in the lattice.
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Zhang, Zhen, Derek Schwanz, Badri Narayanan, Michele Kotiuga, Joseph A. Dura, Mathew Cherukara, Hua Zhou i in. "Perovskite nickelates as electric-field sensors in salt water". Nature 553, nr 7686 (18.12.2017): 68–72. http://dx.doi.org/10.1038/nature25008.

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Wang, Le, Qinghua Zhang, Lei Chang, Lu You, Xu He, Kuijuan Jin, Lin Gu i in. "Electrochemically Driven Giant Resistive Switching in Perovskite Nickelates Heterostructures". Advanced Electronic Materials 3, nr 10 (22.08.2017): 1700321. http://dx.doi.org/10.1002/aelm.201700321.

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Zheng, Hong, Junjie Zhang, Bixia Wang, Daniel Phelan, Matthew J. Krogstad, Yang Ren, W. Adam Phelan, Omar Chmaissem, Bisham Poudel i J. F. Mitchell. "High pO2 Floating Zone Crystal Growth of the Perovskite Nickelate PrNiO3". Crystals 9, nr 7 (26.06.2019): 324. http://dx.doi.org/10.3390/cryst9070324.

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Single crystals of PrNiO3 were grown under an oxygen pressure of 295 bar using a unique high-pressure optical-image floating zone furnace. The crystals, with volume in excess of 1 mm3, were characterized structurally using single crystal and powder X-ray diffraction. Resistivity, specific heat, and magnetic susceptibility were measured, all of which evidenced an abrupt, first order metal-insulator transition (MIT) at ~130 K, in agreement with previous literature reports on polycrystalline specimens. Temperature-dependent single crystal diffraction was performed to investigate changes through the MIT. Our study demonstrates the opportunity space for high fugacity, reactive environments for single crystal growth specifically of perovskite nickelates but more generally to correlated electron oxides.
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Zhang, Junjie, Hong Zheng, Yang Ren i J. F. Mitchell. "High-Pressure Floating-Zone Growth of Perovskite Nickelate LaNiO3 Single Crystals". Crystal Growth & Design 17, nr 5 (13.04.2017): 2730–35. http://dx.doi.org/10.1021/acs.cgd.7b00205.

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Twight, Liam Peter, Alexandra Tonsberg, Kora Dumpert i Shannon W. Boettcher. "(Invited) Dynamic Reconstruction of Lanthanum Nickelate Catalysts and Activation By Iron during OER". ECS Meeting Abstracts MA2022-01, nr 34 (7.07.2022): 1361. http://dx.doi.org/10.1149/ma2022-01341361mtgabs.

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Accurate description of activity trends among perovskite oxide oxygen evolution catalysts using electronic descriptors requires that the bulk structure of the catalyst is comparable to that of the surface. Relatively few works thus far have addressed the dynamic nature of the catalyst structure during OER and the implications this has for rationalization of activity. Here the in-situ surface reconstruction of LaNiO3 particles and an analogous Ruddlesden-Popper phase, La2NiO4+ δ, is described using electrochemical and materials characterization techniques. Small, but characteristic redox features were observed during cyclic voltammetry of these materials corresponding to the Ni2+/3+ redox reaction in amorphous NiOxHy. The size of these redox features grow with prolonged cycling and chronoamperometry indicating that increased duration of electrochemical conditioning continuously induces reconstruction. The reconstructed species contributes to an increased surface area as determined by electrochemical impedance spectroscopy. Near doubling of the OER activity after intentional introduction of only 35 ppb Fe species is observed after cycling, consistent with the formation of NiOxHy on the crystalline surface and subsequent adsorption of Fe to form well-known and extremely active NiFeOxHy OER catalysts. This work brings into focus the importance of considering surface amorphization on perovskite catalysts in discussion of their activity.
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Zhang, Yong, Shunhua Gao, Chunrui Ma, Lu Lu, Chuan Yu Han i Ming Liu. "Unravelling the role of oxygen vacancies on the current transport mechanisms in all-perovskite nickelate/titanate heterojunctions for nonvolatile memory applications". Journal of Applied Physics 132, nr 13 (7.10.2022): 135303. http://dx.doi.org/10.1063/5.0111879.

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The micrometer-sized nickelate–titanate heterojunctions with LaNiO3 (LNO) electrode have been fabricated to investigate the dominant current transport mechanisms under positive and negative bias. The LNO/SmNiO3 (SNO)/Nb:SrTiO3 (NSTO) heterojunction exhibits a highly rectifying feature with a very low leakage in a broad temperature region (from 200 to 425 K), which is attributed to the formation of a Schottky-like barrier at the SNO/NSTO interface. In addition, it is found that the trap defects (i.e., oxygen vacancies) play an essential role in determining the current density ( J) –voltage ( V) characteristics irrespective of the voltage polarity. The leakage current at low electric fields (<0.25 MV/cm) is dominated by temperature-enhanced trap assisted tunneling process, which is caused by the interface oxygen vacancy induced states. Further analysis suggests that, at high fields (>1.2 MV/cm), the leakage is ascribed to the bulk-limited field enhanced thermal ionization of trapped carriers in the SNO film (i.e., Poole–Frenkel emission). Specially, the oxygen vacancy redistribution near the SNO/NSTO heterointerface driven by a high temperature (425 K) or high electrical field (>3.8 MV/cm) stress is emphasized to account for the transition from the Schottky contact limited to bulk-limited conduction mechanism (i.e., space charge limited conduction). This work will benefit the further analysis of the resistive switching phenomena in nickelate-based devices, showing a potential for nonvolatile memory applications.
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Park, Junghum, Yonghyun Lim, Seokwon Kong, Hojae Lee i Young-Beom Kim. "Rapid Fabrication of Chemical Solution-Deposited Lanthanum Nickelate Thin Films via Intense Pulsed-Light Process". Coatings 9, nr 6 (8.06.2019): 372. http://dx.doi.org/10.3390/coatings9060372.

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In this paper, we demonstrate the practicality and feasibility of the flash light-sintering method to fabricate the ceramic material perovskite structure for lanthanum nickel oxide (LaNiO3; LNO) thin films using flash light irradiation equipment. LNO thin films are deposited on an Si wafer and Al2O3 substrate via the chemical solution deposition (CSD) method and sintered by a thermal and flash light-irradiation process with a bottom heater. The properties of flash light-sintered LNO thin films are compared with those of thermally sintered films. The surface morphology, crystal development, and electric conductivity of the LNO thin films are measured by field-emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD), and a four-point probe, respectively. Flash light sintering was accomplished in milliseconds. Through the comparison of thermal sintering and flash light-sintering results, it was confirmed that perovskite LNO thin films deposited by the CSD method can be fabricated by flash light sintering. We show that the flash light sintering method can solve several inherent issues of the conventional thermal sintering method.
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Tagliazucchi, Mario, Rodolfo D. Sanchez, Horacio E. Troiani i Ernesto J. Calvo. "Synthesis of lanthanum nickelate perovskite nanotubes by using a template-inorganic precursor". Solid State Communications 137, nr 4 (styczeń 2006): 212–15. http://dx.doi.org/10.1016/j.ssc.2005.11.022.

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Novojilov, M. A., O. Yu Gorbenko, I. E. Graboy, A. R. Kaul, H. W. Zandbergen, N. A. Babushkina i L. M. Belova. "Perovskite rare-earth nickelates in the thin-film epitaxial state". Applied Physics Letters 76, nr 15 (10.04.2000): 2041–43. http://dx.doi.org/10.1063/1.126248.

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Peng, Meilan, Jijie Huang, Yinlong Zhu, Hua Zhou, Zhiwei Hu, Yi-Kai Liao, Yu-Hong Lai i in. "Structural Anisotropy Determining the Oxygen Evolution Mechanism of Strongly Correlated Perovskite Nickelate Electrocatalyst". ACS Sustainable Chemistry & Engineering 9, nr 11 (12.03.2021): 4262–70. http://dx.doi.org/10.1021/acssuschemeng.1c00596.

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38

Sun, Yifei, Tran N. H. Nguyen, Adam Anderson, Xi Cheng, Thomas E. Gage, Jongcheon Lim, Zhan Zhang i in. "In Vivo Glutamate Sensing inside the Mouse Brain with Perovskite Nickelate–Nafion Heterostructures". ACS Applied Materials & Interfaces 12, nr 22 (8.05.2020): 24564–74. http://dx.doi.org/10.1021/acsami.0c02826.

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39

Maridevaru, Madappa C., Jerry J. Wu, Ramalinga Viswanathan Mangalaraja i Sambandam Anandan. "Ultrasonic‐Assisted Preparation Of Perovskite‐Type Lanthanum Nickelate Nanostructures and Its Photocatalytic Properties". ChemistrySelect 5, nr 26 (9.07.2020): 7947–58. http://dx.doi.org/10.1002/slct.202001645.

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40

Yamanaka, Takashi, Azusa N. Hattori, Keiichiro Hayashi i Hidekazu Tanaka. "Statistical metal–insulator transition properties of electric domains in NdNiO3 nanowires". Japanese Journal of Applied Physics 61, SM (17.06.2022): SM1005. http://dx.doi.org/10.35848/1347-4065/ac6c17.

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Abstract Neodymium nickelate, NdNiO3 (NNO), with a perovskite structure shows resistance change of 1–2 orders owing to insulator–metal-transition (IMT) and metal–insulator-transition (MIT) at around 200 K and its IMT/MIT properties are affected by strain effects (Ni–O–Ni angular distribution). Since the resistance changes in the NNO system are considered to be dominated by competing nanoscale electronic phases, the reduction in sample size down to the individual domain scale could realize the direct investigation of single electric domains. In this study, 100 nm wide NNO nanowire structures were produced on NdGaO3(110) and LSAT(100) substrates, and the statistical IMT/MIT properties of electric domains under different strained structures were investigated. The nanowires showed prominent step resistance changes reflecting intrinsic first-order transition properties with different transition temperature distributions. A statistical transition model unveils the quantitative relationship between the IMT properties of the NNO nano-electronic phase and the strain effect due to the Ni–O–Ni angular distribution in NNO.
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Pocuca-Nesic, Milica, Goran Brankovic, Slavko Bernik, Aleksander Recnik, Dana Vasiljevic-Radovic i Zorica Brankovic. "TEM and FESEM investigation of Lanthanum nickelate thin films obtained by chemical solution deposition". Processing and Application of Ceramics 6, nr 2 (2012): 103–7. http://dx.doi.org/10.2298/pac1202103p.

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Lanthanum nickelate (LNO) is a perovskite oxide material with metallic conductivity in a wide temperature range which makes it suitable for application as electrode material for thin films. In this paper LNO thin films were prepared by polymerizable complex method from the diluted citrate solutions. Precursor solutions were spin coated onto Si-substrates with amorphous layer of SiO2. Deposited layers were thermally treated from the substrate side with low heating rate (1?/min) up to 700?C and finally annealed for 10 hours. Results of AFM and FESEM showed that films are very smooth (Ra = 4 nm), dense, crack-free and with large square-shaped grains (170 nm). According to FESEM and TEM results the obtained four-layered film was only 65 nm thin. EBSD and XRD analyses confirmed polycrystalline microstructure of the films without preferential orientation. It was concluded that the presence of SiO2 layer on Si substrate prevents epitaxial or oriented growth of LNO.
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42

Wang, Yong, Chen Huang, Kaifeng Chen, Yang Zhao, Jingxuan He, Shibo Xi, Pei Chen i in. "Promoting the Oxygen Evolution Activity of Perovskite Nickelates through Phase Engineering". ACS Applied Materials & Interfaces 13, nr 49 (1.12.2021): 58566–75. http://dx.doi.org/10.1021/acsami.1c16885.

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43

Chen, Jikun, Haiyang Hu, Fanqi Meng, Takeaki Yajima, Lixia Yang, Binghui Ge, Xinyou Ke, Jiaou Wang, Yong Jiang i Nuofu Chen. "Overlooked Transportation Anisotropies in d-Band Correlated Rare-Earth Perovskite Nickelates". Matter 2, nr 5 (maj 2020): 1296–306. http://dx.doi.org/10.1016/j.matt.2020.02.023.

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44

Novojilov, M. A., O. Yu Gorbenko, I. V. Nikulin, I. E. Graboy, A. R. Kaul, N. A. Babushkina i L. M. Belova. "Epitaxial perovskite rare-earth nickelates and their heterostructures with CMR manganites". International Journal of Inorganic Materials 3, nr 8 (grudzień 2001): 1165–68. http://dx.doi.org/10.1016/s1466-6049(01)00115-5.

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45

Vaz, T., S. M. Gurav i A. V. Salker. "Influence of Cobalt Substitution in LaNiO3 Nanoperovskite on Catalytic Propylene Oxidation". Journal of Scientific Research 13, nr 3 (1.09.2021): 961–69. http://dx.doi.org/10.3329/jsr.v13i3.52435.

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Perovskite-type oxides with transition elements offer promising potential as catalysts in total oxidation reactions. The present work reports the synthesis of crystalline lanthanum nickelates and cobaltates and their intermediate nanomaterials compositions LaNi1-XCoXO3 (x = 0.3, 0.5, and 0.7) at 800 ºC by co-precipitation precursor technique for structural, morphological, and total propylene oxidation catalytic activity. The evolution of the crystal structure and formation of the perovskite phase were analyzed by X-ray diffraction, Thermo Gravimetry Analysis (TGA) / Differential Scanning Calorimetry (DSC), Fourier Transformed Infra-Red (FTIR), Atomic Absorption Spectroscopy (AAS), Scanning Electron Microscopy (SEM), Brunauer–Emmett–Teller (BET), Electron Spin Resonance (ESR) techniques. The terminal compounds LaNiO3, LaCoO3, and their intermediates compositions were identified to be single-phase and are indexed to rhombohedral structures. The bonding characteristics were studied by FTIR spectroscopy. On substitution of Ni with Co in B-site, the slight distortion in XRD diffraction peaks were observed. These compounds show a considerable increase in the activity of propylene oxidation to carbon dioxide. This study aims at understanding the effect of B– site substitution in the lattice of LaNiO3 and their influence on catalytic propylene oxidation efficiency.
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Choi, Sung Ryul, John-In Lee, Hyunyoung Park, Sung Won Lee, Dong Yeong Kim, Won Young An, Jung Hyun Kim, Jongsoon Kim, Hyun-Seok Cho i Jun-Young Park. "Multiple perovskite layered lanthanum nickelate Ruddlesden-Popper systems as highly active bifunctional oxygen catalysts". Chemical Engineering Journal 409 (kwiecień 2021): 128226. http://dx.doi.org/10.1016/j.cej.2020.128226.

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Nishimura, Takuma, Tsukasa Katayama, Shishin Mo, Akira Chikamatsu i Tetsuya Hasegawa. "Improvement of electric insulation in dielectric layered perovskite nickelate films via fluorination". Journal of Materials Chemistry C 10, nr 5 (2022): 1711–17. http://dx.doi.org/10.1039/d1tc04755h.

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Epitaxial films of La3/2Sr1/2NiOxFy with a wide range of fluorine content (y), 0.4–3, were prepared. The fluorinated film exhibited high electric insulation due to the large and random bond distortions provided by the fluorination.
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48

Onozuka, Tomoya, Akira Chikamatsu, Tsukasa Katayama, Yasushi Hirose, Isao Harayama, Daiichiro Sekiba, Eiji Ikenaga, Makoto Minohara, Hiroshi Kumigashira i Tetsuya Hasegawa. "Reversible Changes in Resistance of Perovskite Nickelate NdNiO3 Thin Films Induced by Fluorine Substitution". ACS Applied Materials & Interfaces 9, nr 12 (16.03.2017): 10882–87. http://dx.doi.org/10.1021/acsami.7b00855.

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Bak, Jumi, Hyung Bin Bae, Jaehoon Kim, Jihun Oh i Sung-Yoon Chung. "Formation of Two-Dimensional Homologous Faults and Oxygen Electrocatalytic Activities in a Perovskite Nickelate". Nano Letters 17, nr 5 (11.04.2017): 3126–32. http://dx.doi.org/10.1021/acs.nanolett.7b00561.

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Bian, Yi, Haiyan Li, Fengbo Yan, Haifan Li, Jiaou Wang, Hao Zhang, Yong Jiang, Nuofu Chen i Jikun Chen. "Hydrogen induced electronic transition within correlated perovskite nickelates with heavy rare-earth composition". Applied Physics Letters 120, nr 9 (28.02.2022): 092103. http://dx.doi.org/10.1063/5.0082917.

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Although the hydrogen induced electronic transition within the perovskite family of rare-earth nickelate ( ReNiO3) beyond conventional semiconductors was recently discovered, the existing research stays at ReNiO3 with light rare-earth compositions. To further extend the cognition toward heavier rare-earth, herein we demonstrate hydrogen induced electronic transitions for quasi-single crystalline ReNiO3/LaAlO3 (001) heterostructures, covering a large variety of the rare-earth composition from Nd to Er. The hydrogen induced elevations in the resistivity of ReNiO3 ( RH/ R0) show an unexpected non-monotonic tendency with the atomic number of the rare-earth composition, e.g., first increases from Nd to Dy and afterwards decreases from Dy to Er. Although ReNiO3 with heavy rare-earth composition (e.g., DyNiO3) exhibits large RH/ R0 up to 107, their hydrogen induced electronic transition is not reversible. Further probing the electronic structures via near edge x-ray absorption fine structure analysis clearly demonstrates the respective transition in electronic structures of ReNiO3 from Ni3+ based electron itinerant orbital configurations toward the Ni2+ based electron localized state. Balancing the hydrogen induced transition reversibility with abruption in the variations of material resistivity, we emphasize that ReNiO3 with middle rare-earth compositions (e.g., Sm) are most suitable in catering to the potential applications in correlated electronic devices.
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