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Journal articles on the topic 'SrFeO3'

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Author: Grafiati
Published: 4 June 2021
Last updated: 28 January 2023

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1

Sim, Jaeyong, Sang-Hyeok Kim, Jin-Yong Kim, Ki Bong Lee, Sung-Chan Nam, and Chan Young Park. "Enhanced Carbon Dioxide Decomposition Using Activated SrFeO3−δ." Catalysts 10, no. 11 (November 3, 2020): 1278. http://dx.doi.org/10.3390/catal10111278.

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Today, climate change caused by global warming has become a worldwide problem with increasing greenhouse gas (GHG) emissions. Carbon capture and storage technologies have been developed to capture carbon dioxide (CO2); however, CO2 storage and utilization technologies are relatively less developed. In this light, we have reported efficient CO2 decomposition results using a nonperovskite metal oxide, SrFeCo0.5Ox, in a continuous-flow system. In this study, we report enhanced efficiency, reliability under isothermal conditions, and catalytic reproducibility through cyclic tests using SrFeO3−δ. This ferrite needs an activation process, and 3.5 vol% H2/N2 was used in this experiment. Activated oxygen-deficient SrFeO3−δ can decompose CO2 into carbon monoxide (CO) and carbon (C). Although SrFeO3−δ is a well-known material in different fields, no studies have reported its use in CO2 decomposition applications. The efficiency of CO2 decomposition using SrFeO3−δ reached ≥90%, and decomposition (≥80%) lasted for approximately 170 min. We also describe isothermal and cyclic experimental data for realizing commercial applications. We expect that these results will contribute to the mitigation of GHG emissions.
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2

Седых, В. Д., О. Г. Рыбченко, Э. В. Суворов, А. И. Иванов, and В. И. Кулаков. "Кислородные вакансии и валентные состояния железа в соединениях SrFeO-=SUB=-3-delta-=/SUB=-." Физика твердого тела 62, no. 10 (2020): 1698. http://dx.doi.org/10.21883/ftt.2020.10.49924.096.

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The X-ray and Mossbauer studies of the Brownmillerite phase have been carried out in the given work and the well-known literature data on the single phase compounds with a perovskite structure in ferrite strontium SrFeO3-δ have been analyzed. It has been found out that all Fe valence states for any phase composition of ferrite strontium are determined by its local oxygen environment. It allows us to understand the behavior of Fe transition from one valence state to another when adding oxygen vacancies and to explain the Fe structural states in the SrFeO3-δ oxide including single and two-phase compositions. This approach is a more general case for description of the all known compounds and synthesized phase combinations in SrFeO3-δ and the formula considered in literature for the single-phase structures well agrees with it.
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3

Wang, Dashan, James J. Tunney, Xiaomei Du, Michael L. Post, and Raynald Gauvin. "Transmission electron microscopy investigation of interfacial reactions between SrFeO3 thin films and silicon substrates." Journal of Materials Research 22, no. 1 (January 2007): 76–88. http://dx.doi.org/10.1557/jmr.2007.0005.

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The SrFeO3/SiO2/Si thin film system has been studied using transmission electron microscopy (TEM). The thin films of SrFeO3 were grown by pulsed laser deposition onto silicon substrates with a SiO2 buffer layer at room temperature (RT) and 700 °C and subjected to annealing for various periods of time at temperature T = 700 °C. Transmission electron microscopy characterization showed that the microstructure of the film deposited at room temperature contained crystalline and amorphous layers. Silicon diffusion into SrFeO3 films occurred at the SiO2 interface for the samples deposited at 700 °C and for those films annealed at 700 °C. The silicon diffusion-induced interfacial reactions resulted in the phase transformations and the growth of complex crystalline and amorphous phases. The principal compositions of these phases were Sr(Fe,Si)12O19, SrOx and amorphous [Sr-Fe-O-Si].
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4

Zhong, Yu-Jie, and Chong-Der Hu. "Spin Waves in SrFeO3." Journal of the Physical Society of Japan 82, no. 1 (January 15, 2013): 014704. http://dx.doi.org/10.7566/jpsj.82.014704.

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5

Liang, Chong, De An Yang, Jian Jing Song, and Ming Xia Xu. "Oxygen Sensitivity of SrFeO3-δ Thin Films Prepared by Sol-Gel Method." Key Engineering Materials 280-283 (February 2007): 315–18. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.315.

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Sr(NO3)2, Fe(NO3)3 and citric acid (the mole ratio was 1:1:2) were mixed in water to form sol. Alumina substrate, which had been treated by ultrasonic cleaner, were dipped in the sol and pulled out, and the coating film was heated for 1h at 900oC. Through seventeen times treatment, SrFeO3-d thin film was coated on the alumina substrate. The remainder sol was dried and heated at 400oC, 800oC, 900oC for 2 h. The thin films and the powders were characterized by XRD. The morphologies of thin films were observed by SEM. The results showed that SrFeO3-δ was formed at 900oC on alumina substrate and the grain size was 100 ~ 200 nm. The oxygen sensitivity was measured in the temperature range of 377 ~ 577oC under different oxygen partial pressures. SrFeO3-δ thin film showed p-type conduction. The response time was less than 2 min when being exposed to a change from N2 to 0.466% O2 at 377oC.
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6

Седых, В. Д., О. Г. Рыбченко, А. Н. Некрасов, И. Е. Конева, and В. И. Кулаков. "Влияние содержания кислорода на локальное окружение атомов Fe в анион-дефицитном SrFeO-=SUB=-3-delta-=/SUB=-." Физика твердого тела 61, no. 6 (2019): 1162. http://dx.doi.org/10.21883/ftt.2019.06.47694.372.

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The structure features of polycrystalline anion-deficient ferrite strontium SrFeO3-δ have been investigated for different oxygen content by Mossbauer spectroscopy, X-ray diffraction analysis and scanning electron microscopy. Three structures with a different composition have been prepared depending on heat treatment conditions. Several non-equivalent Fe positions exist within each structure that correspond to different local oxygen environments the relation and distortion degree of which change depending on oxygen quantity. Based on the Mossbauer data obtained an oxygen content has been estimated for each structure. One more the model intermediate composition Sr16Fe16O45 of the SrFeO3-δ compound is proposed.
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7

Kleveland, Kjersti, Andrew Wereszczak, Timothy P. Kirkland, Mari-Ann Einarsrud, and Tor Grande. "Compressive Creep Performance of SrFeO3." Journal of the American Ceramic Society 84, no. 8 (December 20, 2004): 1822–26. http://dx.doi.org/10.1111/j.1151-2916.2001.tb00921.x.

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8

Wu, Chunping, Yiran Zhang, Bang Xiao, Lin Yang, Anqi Jiao, Yinan Wang, Xuteng Zhao, and He Lin. "YSZ-Based Mixed Potential Type Sensors Utilizing Pd-doped SrFeO3 Perovskite Sensing Electrode to Monitor Sulfur Dioxide Emission." Journal of The Electrochemical Society 169, no. 3 (March 1, 2022): 037508. http://dx.doi.org/10.1149/1945-7111/ac593c.

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Sulfur dioxide (SO2) is one of the key pollutants in the atmosphere that should be monitored in many combustion facilities. In this paper, YSZ-based mixed potential SO2 sensors were developed utilizing the perovskite-type SrFeO3 sensing electrode, and Pd doping was applied to enhance the sensing performance. It was found that the sensor utilizing the Pd0.05-SrFeO3 sensing electrode showed the highest sensitivity toward 1–30 ppm SO2 at 575 ° C , and exhibited a piecewise linear relationship between Δ V and the logarithm of SO2 concentrations in this concentration range. The significant enhancement of sensing performances by 5 at% Pd doping was mainly attributed to the increasing of electrochemical catalytic activity of the anodic reaction. After the sensing performance test in the temperature range between 525 ° C –625 ° C , 575 ° C was selected as the optimum operating temperature. The sensing performances of the developed Pd0.05-SrFeO3 sensor were further evaluated at 575 ° C , exhibiting good selectivity to CO, CO2, NO, and NO2 interference and good long-term stability. In addition, the fluctuation of oxygen concentration can be corrected by the Butler-Volmer equation following the mixed potential theory.
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9

Nguyen, Nhu Pailes, Tyler P. Farr, H. Evan Bush, Andrea Ambrosini, and Peter G. Loutzenhiser. "Air separation via two-step solar thermochemical cycles based on SrFeO3−δ and (Ba,La)0.15Sr0.85FeO3−δ perovskite reduction/oxidation reactions to produce N2: rate limiting mechanism(s) determination." Physical Chemistry Chemical Physics 23, no. 35 (2021): 19280–88. http://dx.doi.org/10.1039/d1cp03303d.

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10

Gurskii, A. L., N. A. Kalanda, M. V. Yarmolich, I. A. Bobrikov, S. V. Sumnikov, and A. V. Petrov. "PHASE TRANSFORMATIONS DURING CRYSTALLIZATION OF A SOLID SOLUTION OF STRONTIUM-SUBSTITUTED DOUBLE PEROVSKITE." Doklady BGUIR, no. 7-8 (December 29, 2019): 73–80. http://dx.doi.org/10.35596/1729-7648-2019-126-8-73-80.

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The kinetics of phase contents modification in the process of SrBaFeMoO6–δ crystallization from a stoichiometric mixture of SrCO3 + BaCO3 + 0,5Fe2O3 + MoO3 simple oxides using the solid phase method has been investigated. In the temperature region of 300–1200°С, a number of endotermic effects have been detected. Herewith, the first one (with maximum around 552°С) and the third one (with maximum around 743°С) are accompanying by the significant decrease of the mass of specimen. In the temperature range of 946–1200°С, the mass change of specimen is practically not observable, while the thermal effect is still present, and the specimen remains not single-phase one. This indicates the difficulty of the flow of solid phase reactions with the formation of solid solution of barium-strontium ferromolybdate. During analysis of the change of the phase composition consisting of a mixture of initial reagents of stoichiometric relation SrCO3 + BaCO3 + 0,5Fe2O3 + MoO3, it has been observed that with increasing temperature, complex compounds BaMoO4, SrFeO3 appear almost simultaneously, then SrBaFeMoO6–δ appears consequently. Thus, the compounds BaMoO4 и SrFeO3, are structure forming for the solid solution of barium-strontium ferromolybdate. With further temperature increase up to 770°С the formation of new compound ВаFeO3 with disappearing SrFeO3 was detected. In this case, the amount of double perovskite increases faster than that of barium molybdate. The main accompanying compounds at the crystallization of the SrBaFeMoO6–δ double perovskite solid solution are BaMoO4 and SrFeO3. It was established that at the initial stage of the interaction, the resulting solid solution of barium-strontium ferromolybdate is enriched with iron and its composition changes during the reaction in the direction of an increase of the molybdenum content, as in the case of other precursor combinations.
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11

Chen, Sha, Hongwei Cheng, Yanbo Liu, Xiaolu Xiong, Qiangcao Sun, Xionggang Lu, and Shenggang Li. "First-principles studies of oxygen ion migration behavior for different valence B-site ion doped SrFeO3−δ ceramic membranes." Physical Chemistry Chemical Physics 23, no. 48 (2021): 27266–72. http://dx.doi.org/10.1039/d1cp03845a.

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12

Wang, Xijun, Yunfei Gao, Emily Krzystowczyk, Sherafghan Iftikhar, Jian Dou, Runxia Cai, Haiying Wang, Chongyan Ruan, Sheng Ye, and Fanxing Li. "High-throughput oxygen chemical potential engineering of perovskite oxides for chemical looping applications." Energy & Environmental Science 15, no. 4 (2022): 1512–28. http://dx.doi.org/10.1039/d1ee02889h.

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Integrating DFT, machine learning and experimental verifications, a high-throughput screening scheme is performed to rationally engineer the redox properties of SrFeO3−δ based perovskites for chemical looping applications.
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13

Alaydrus, Musa, Ikutaro Hamada, and Yoshitada Morikawa. "Mechanistic insight into oxygen vacancy migration in SrFeO3−δ from DFT+U simulations." Physical Chemistry Chemical Physics 23, no. 34 (2021): 18628–39. http://dx.doi.org/10.1039/d1cp02452c.

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DFT+U was utilized to address the relationship between oxygen ion diffusion and the local geometric and magnetic structures in various polymorphic SrFeO3–δ structures at different oxygen vacancy concentrations.
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14

Manimuthu, P., and C. Venkateswaran. "Evidence of ferroelectricity in SrFeO3−δ." Journal of Physics D: Applied Physics 45, no. 1 (December 12, 2011): 015303. http://dx.doi.org/10.1088/0022-3727/45/1/015303.

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15

Schmidt, M. "Mechanically induced oxidation of SrFeO3−δ." Materials Research Bulletin 35, no. 2 (January 2000): 169–75. http://dx.doi.org/10.1016/s0025-5408(00)00209-9.

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16

Berry, Frank J., Xiaolin Ren, Richard Heap, Peter Slater, and Michael F. Thomas. "Fluorination of perovskite-related SrFeO3−δ." Solid State Communications 134, no. 9 (June 2005): 621–24. http://dx.doi.org/10.1016/j.ssc.2005.03.005.

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17

YANG, Jun, Runsheng LI, Xiaoci LI, Yulin LONG, Junyi ZHOU, and Yuanming ZHANG. "Molten salt synthesis of SrFeO3 nanocrystals." Journal of the Ceramic Society of Japan 119, no. 1394 (2011): 736–39. http://dx.doi.org/10.2109/jcersj2.119.736.

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18

Yamamoto, Kohei, Tomoyuki Tsuyama, Suguru Ito, Kou Takubo, Iwao Matsuda, Niko Pontius, Christian Schüßler-Langeheine, et al. "Photoinduced transient states of antiferromagnetic orderings in La1/3Sr2/3FeO3 and SrFeO3−δ thin films observed through time-resolved resonant soft x-ray scattering." New Journal of Physics 24, no. 4 (April 1, 2022): 043012. http://dx.doi.org/10.1088/1367-2630/ac5f31.

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Abstract The relationship between the magnetic interaction and photoinduced dynamics in antiferromagnetic perovskites is investigated in this study. In La1/3Sr2/3FeO3 thin films, commensurate spin ordering is accompanied by charge disproportionation, whereas SrFeO3−δ thin films show incommensurate helical antiferromagnetic spin ordering due to increased ferromagnetic coupling compared to La1/3Sr2/3FeO3. To understand the photoinduced spin dynamics in these materials, we investigate the spin ordering through time-resolved resonant soft x-ray scattering. In La1/3Sr2/3FeO3, ultrafast quenching of the magnetic ordering within 130 fs through a nonthermal process is observed, triggered by charge transfer between the Fe atoms. We compare this to the photoinduced dynamics of the helical magnetic ordering of SrFeO3−δ . We find that the change in the magnetic coupling through optically induced charge transfer can offer an even more efficient channel for spin-order manipulation.
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19

Manimuthu, P., R. Murugaraj, and C. Venkateswaran. "Non-universal dielectric relaxation in SrFeO3−δ." Physics Letters A 378, no. 36 (July 2014): 2725–28. http://dx.doi.org/10.1016/j.physleta.2014.07.035.

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20

Wiβmann, S. "Localization of electrons in nonstoichiometric SrFeO3 − Δ." Solid State Ionics 85, no. 1-4 (May 1996): 279–83. http://dx.doi.org/10.1016/0167-2738(96)00071-9.

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21

Perret, E., K. Sen, J. Khmaladze, B. P. P. Mallett, M. Yazdi-Rizi, P. Marsik, S. Das, et al. "Structural, magnetic and electronic properties of pulsed-laser-deposition grown SrFeO3−δthin films and SrFeO3−δ/La2/3Ca1/3MnO3multilayers." Journal of Physics: Condensed Matter 29, no. 49 (November 14, 2017): 495601. http://dx.doi.org/10.1088/1361-648x/aa93a6.

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22

Zhao, Jiali, Kaihui Chen, Shi-En Li, Qinghua Zhang, Jia-Ou Wang, Er-Jia Guo, Haijie Qian, et al. "Electronic-structure evolution of SrFeO3–x during topotactic phase transformation." Journal of Physics: Condensed Matter 34, no. 6 (November 22, 2021): 064001. http://dx.doi.org/10.1088/1361-648x/ac36fd.

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Abstract Oxygen-vacancy-induced topotactic phase transformation between the ABO2.5 brownmillerite structure and the ABO3 perovskite structure attracts ever-increasing attention due to the perspective applications in catalysis, clean energy field, and memristors. However, a detailed investigation of the electronic-structure evolution during the topotactic phase transformation for understanding the underlying mechanism is highly desired. In this work, multiple analytical methods were used to explore evolution of the electronic structure of SrFeO3−x thin films during the topotactic phase transformation. The results indicate that the increase in oxygen content induces a new unoccupied state of O 2p character near the Fermi energy, inducing the insulator-to-metal transition. More importantly, the hole states are more likely constrained to the dx 2–y 2 orbital than to the d3z 2–r 2 orbital. Our results reveal an unambiguous evolution of the electronic structure of SrFeO3–x films during topotactic phase transformation, which is crucial not only for fundamental understanding but also for perspective applications such as solid-state oxide fuel cells, catalysts, and memristor devices.
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23

Sereda, Vladimir, Anton Sednev, Dmitry Tsvetkov, and Andrey Zuev. "Enthalpy increments and redox thermodynamics of SrFeO3−δ." Journal of Materials Research 34, no. 19 (August 30, 2019): 3288–95. http://dx.doi.org/10.1557/jmr.2019.143.

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24

Liu, Donhang, Xi Yao, and L. E. Cross. "Order‐disorder and dielectric relaxation in SrFeO3−x." Journal of Applied Physics 71, no. 10 (May 15, 1992): 5115–18. http://dx.doi.org/10.1063/1.350615.

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25

Aich, Payel, Desheng Fu, Carlo Meneghini, and Sugata Ray. "Identifying the nature of dielectric anomalies in SrFeO3−." Journal of Magnetism and Magnetic Materials 486 (September 2019): 165265. http://dx.doi.org/10.1016/j.jmmm.2019.165265.

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26

Hong, Deshun, Changjiang Liu, John E. Pearson, Axel Hoffmann, Dillon D. Fong, and Anand Bhattacharya. "Spin Seebeck effect in insulating SrFeO3−δ films." Applied Physics Letters 114, no. 24 (June 17, 2019): 242403. http://dx.doi.org/10.1063/1.5097422.

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27

Zhao, Y. M., and P. F. Zhou. "Metal–insulator transition in helical SrFeO3−δ antiferromagnet." Journal of Magnetism and Magnetic Materials 281, no. 2-3 (October 2004): 214–20. http://dx.doi.org/10.1016/j.jmmm.2004.04.107.

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28

Matar, S. F., P. Mohn, and G. Demazeau. "The magnetic structure of SrFeO3 calculated within LDA." Journal of Magnetism and Magnetic Materials 140-144 (February 1995): 169–70. http://dx.doi.org/10.1016/0304-8853(94)01129-x.

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29

Vashuk, V. V., L. V. Kokhanovskii, and I. I. Yushkevich. "Electrical conductivity and oxygen stoichiometry of SrFeO3-δ." Inorganic Materials 36, no. 1 (March 2000): 79–83. http://dx.doi.org/10.1007/bf02758386.

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30

Darwish, Esraa, Moufida Mansouri, Duygu Yilmaz, and Henrik Leion. "Effect of Mn and Cu Substitution on the SrFeO3 Perovskite for Potential Thermochemical Energy Storage Applications." Processes 9, no. 10 (October 13, 2021): 1817. http://dx.doi.org/10.3390/pr9101817.

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Perovskites are well-known oxides for thermochemical energy storage applications (TCES) since they show a great potential for spontaneous O2 release due to their non-stoichiometry. Transition-metal-based perovskites are particularly promising candidates for TCES owing to their different oxidation states. It is important to test the thermal behavior of the perovskites for TCES applications; however, the amount of sample that can be used in thermal analyses is limited. The use of redox cycles in fluidized bed tests can offer a more realistic approach, since a larger amount of sample can be used to test the cyclic behavior of the perovskites. In this study, the oxygen release/consumption behavior of Mn- or Cu-substituted SrFeO3 (SrFe0.5M0.5O3; M: Mn or Cu) under redox cycling was investigated via thermal analysis and fluidized bed tests. The reaction enthalpies of the perovskites were also calculated via differential scanning calorimetry (DSC). Cu substitution in SrFeO3 increased the performance significantly for both cyclic stability and oxygen release/uptake capacity. Mn substitution also increased the cyclic stability; however, the presence of Mn as a substitute for Fe did not improve the oxygen release/uptake performance of the perovskite.
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31

Hayashi, Naoaki, Takahito Terashima, and Mikio Takano. "Epitaxial Growth and Physical Properties of SrFeO3 Thin Film." Journal of the Japan Society of Powder and Powder Metallurgy 48, no. 2 (2001): 177–79. http://dx.doi.org/10.2497/jjspm.48.177.

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32

Srinath, S., M. Mahesh Kumar, K. Sahner, M. L. Post, M. Wickles, R. Moos, and H. Srikanth. "Magnetization in insulating phases of Ti4+-doped SrFeO3−δ." Journal of Applied Physics 99, no. 8 (April 15, 2006): 08S904. http://dx.doi.org/10.1063/1.2167050.

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33

Santana, Juan A., Jaron T. Krogel, Paul R. C. Kent, and Fernando A. Reboredo. "Diffusion quantum Monte Carlo calculations of SrFeO3 and LaFeO3." Journal of Chemical Physics 147, no. 3 (July 21, 2017): 034701. http://dx.doi.org/10.1063/1.4994083.

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34

Wiik, K. "Oxygen permeation in the system SrFeO3−x–SrCoO3−y." Solid State Ionics 152-153 (December 2002): 675–80. http://dx.doi.org/10.1016/s0167-2738(02)00408-3.

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35

Bakken, E. "Redox energetics of SrFeO3−δ — a coulometric titration study." Solid State Ionics 167, no. 3-4 (February 27, 2004): 367–77. http://dx.doi.org/10.1016/j.ssi.2004.01.014.

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36

Yuryeva, É. I., V. L. Kozhevnikov, and A. L. Ivanovskii. "Charge states and hyperfine interaction parameters in perovskite SrFeO3." Journal of Structural Chemistry 47, no. 3 (May 2006): 553–57. http://dx.doi.org/10.1007/s10947-006-0335-3.

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37

Maljuk, A., A. Lebon, V. Damljanović, C. Ulrich, C. T. Lin, P. Adler, and B. Keimer. "Growth and oxygen treatment of SrFeO3−y single crystals." Journal of Crystal Growth 291, no. 2 (June 2006): 412–15. http://dx.doi.org/10.1016/j.jcrysgro.2006.03.047.

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38

Hombo, Jukichi, Yasumichi Matsumoto, and Takeo Kawano. "Electrical conductivities of SrFeO3−δ and BaFeO3−δ perovskites." Journal of Solid State Chemistry 84, no. 1 (January 1990): 138–43. http://dx.doi.org/10.1016/0022-4596(90)90192-z.

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39

Sendil Kumar, A., and S. Srinath. "Exchange bias effect in Ti doped nanocrystalline SrFeO3-δ." AIP Advances 4, no. 8 (August 2014): 087144. http://dx.doi.org/10.1063/1.4894486.

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40

Chang, Seo Hyoung, Seong Keun Kim, Young-Min Kim, Yongqi Dong, Chad M. Folkman, Da Woon Jeong, Woo Seok Choi, et al. "Confined polaronic transport in (LaFeO3)n/(SrFeO3)1 superlattices." APL Materials 7, no. 7 (July 2019): 071117. http://dx.doi.org/10.1063/1.5110190.

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41

Nasu, S., T. Abe, K. Yamamoto, S. Endo, M. Takano, and Y. Takeda. "57Fe Mössbauer study of SrFeO3 under ultra-high pressure." Hyperfine Interactions 67, no. 1-4 (November 1991): 529–32. http://dx.doi.org/10.1007/bf02398196.

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42

Kumar, A. Sendil, D. Paul Joseph, Anil K. Bhatnagar, and S. Srinath. "Magnetism and Charge Order in Nanocrystalline Orthorhombic SrFeO3-δ." Journal of Superconductivity and Novel Magnetism 33, no. 6 (January 31, 2020): 1839–44. http://dx.doi.org/10.1007/s10948-020-05423-3.

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43

Jia, Lishan, Tong Ding, Qingbiao Li, and Yong Tang. "Study of photocatalytic performance of SrFeO3− by ultrasonic radiation." Catalysis Communications 8, no. 6 (June 2007): 963–66. http://dx.doi.org/10.1016/j.catcom.2006.08.026.

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44

Fournès, L., Y. Potin, J. C. Grenier, G. Demazeau, and M. Pouchard. "High temperature Mössbauer spectroscopy of some SrFeO3−y phases." Solid State Communications 62, no. 4 (April 1987): 239–44. http://dx.doi.org/10.1016/0038-1098(87)90803-9.

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Heifets, Eugene, Eugene A. Kotomin, Alexander A. Bagaturyants, and Joachim Maier. "Thermodynamic stability of non-stoichiometric SrFeO3−δ: a hybrid DFT study." Physical Chemistry Chemical Physics 21, no. 7 (2019): 3918–31. http://dx.doi.org/10.1039/c8cp07117a.

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Sendil Kumar, A., P. D. Babu, and S. Srinath. "Neutron diffraction studies and magnetism in Ti doped SrFeO3−δsystems." Journal of Applied Physics 115, no. 10 (March 14, 2014): 103904. http://dx.doi.org/10.1063/1.4868158.

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Yamada, Hiroyuki, M. Kawasaki, and Y. Tokura. "Epitaxial growth and valence control of strained perovskite SrFeO3 films." Applied Physics Letters 80, no. 4 (January 28, 2002): 622–24. http://dx.doi.org/10.1063/1.1445805.

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LI, Junjie, Xianfeng HAO, Minfeng LV, and Jian MENG. "Tunable Synthesis and Magnetic Properties of Nano-shaped SrFeO3-δ." Acta Agronomica Sinica 29, no. 6 (2012): 649. http://dx.doi.org/10.3724/sp.j.1095.2012.00403.

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Mishra, Rohan, Young-Min Kim, Juan Salafranca, Seong Keun Kim, Seo Hyoung Chang, Anand Bhattacharya, Dillon D. Fong, Stephen J. Pennycook, Sokrates T. Pantelides, and Albina Y. Borisevich. "Oxygen-Vacancy-Induced Polar Behavior in (LaFeO3)2/(SrFeO3) Superlattices." Nano Letters 14, no. 5 (April 18, 2014): 2694–701. http://dx.doi.org/10.1021/nl500601d.

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Hsieh, Shang Hsien, Mukta Vinayak Limaye, Shashi Bhushan Singh, Yu Cheng Shao, Yu Fu Wang, Chang Hung Yao, Chao Hung Du, et al. "X-ray Absorption Spectroscopic studies of Single Crystal SrFeO3-δ." Acta Crystallographica Section A Foundations and Advances 70, a1 (August 5, 2014): C1527. http://dx.doi.org/10.1107/s2053273314084721.

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Abstract:
We have prepared a high quality single crystal of SrFeO3-δ (δ ~ 0.14) by the floating-zone method to study the electronic and atomic structures using temperature-dependent x-ray absorption near-edge structure (XANES), x-ray linear dichroism (XLD), and extended x-ray absorption fine structure (EXAFS) at the O K-edge, Fe L3,2- and K-edge. Resistivity measurements indicate that the SrFeO2.86 shows an anisotropic behavior, and thermal hysteresis behavior between 70 K and 40 K. The temperature dependent Fe K-edge EXAFS studies shows that the Fe-O bond length changes in ab-plane below transition temperature. The XLD results illustrate that as temperature is reduced from room temperature to below the transition temperature, the preferential occupancy of Fe majority-spin eg orbitals changes from the 3d3z2-r2 to 3dx2-y2, but restore to 3dx2-y2 after thermal hysteresis. Experimental findings suggest that the charge transfer during thermal hysteresis is induced by lattice distortions of the FeO6 octahedra in SrFeO2.86.
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