Relevant bibliographies by topics / SrFeO2.875 / Journal articles

Journal articles on the topic 'SrFeO2.875'

To see the other types of publications on this topic, follow the link: SrFeO2.875.
Author: Grafiati
Published: 4 June 2021
Last updated: 31 January 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 45 journal articles for your research on the topic 'SrFeO2.875.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Répécaud, Pierre-Alexis, Monica Ceretti, Mimoun Aouine, Céline Delwaulle, Emmanuel Nonnet, Werner Paulus, and Helena Kaper. "Brownmillerites CaFeO2.5 and SrFeO2.5 as Catalyst Support for CO Oxidation." Molecules 26, no. 21 (October 23, 2021): 6413. http://dx.doi.org/10.3390/molecules26216413.

Full text
Abstract:
The support material can play an important role in oxidation catalysis, notably for CO oxidation. Here, we study two materials of the Brownmillerite family, CaFeO2.5 and SrFeO2.5, as one example of a stoichiometric phase (CaFeO2.5, CFO) and one existing in different modifications (SrFeO2.75, SrFeO2.875 and SrFeO3, SFO). The two materials are synthesized using two synthesis methods, one bottom-up approach via a complexation route and one top-down method (electric arc fusion), allowing to study the impact of the specific surface area on the oxygen mobility and catalytic performance. CO oxidation on 18O-exchanged materials shows that oxygen from SFO participates in the reaction as soon as the reaction starts, while for CFO, this onset takes place 185 °C after reaction onset. This indicates that the structure of the support material has an impact on the catalytic performance. We report here on significant differences in the catalytic activity linked to long-term stability of CFO and SFO, which is an important parameter not only for possible applications, but equally to better understand the mechanism of the catalytic activity itself.
APA, Harvard, Vancouver, ISO, and other styles
2

Huang, Wen Lai, and Qingshan Zhu. "Structures and Energetics of SrFeO2.875 Calculated within the GGA + U Framework." Journal of Chemical Theory and Computation 5, no. 10 (September 28, 2009): 2787–97. http://dx.doi.org/10.1021/ct900405j.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Haavik, Camilla, Egil Bakken, Truls Norby, Svein Stølen, Tooru Atake, and Takeo Tojo. "Heat capacity of SrFeO3–δ; δ = 0.50, 0.25 and 0.15 – configurational entropy of structural entities in grossly non-stoichiometric oxidesElectronic supplementary information (ESI) available: the experimental molar heat capacities of SrFeO2.54, SrFeO2.725 and SrFeO2.833 at sub-ambient temperatures and the corresponding data for SrFeO2.50, SrFeO2.74, SrFeO2.82, SrFeO2.833 and SrFeO2.85 at super-ambient temperatures. See http://www.rsc.org/suppdata/dt/b2/b209236k/." Dalton Transactions, no. 3 (December 24, 2002): 361–68. http://dx.doi.org/10.1039/b209236k.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Zhao, Y. M., X. J. Yang, Y. F. Zheng, D. L. Li, and S. Y. Chen. "Large magnetoresistance in SrFeO2.95." Solid State Communications 115, no. 7 (July 2000): 365–68. http://dx.doi.org/10.1016/s0038-1098(00)00187-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Zhao, Y. M., P. F. Zhou, X. J. Yang, G. M. Qiu, and L. Ping. "Magnetotransport properties of SrFeO2.95 perovskite." Solid State Communications 120, no. 7-8 (October 2001): 283–87. http://dx.doi.org/10.1016/s0038-1098(01)00389-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Huang, Hailin, Liang Zhu, Hui Zhang, Jine Zhang, Furong Han, Jinghua Song, Xiaobing Chen, et al. "Tuning magnetic anisotropy by interfacial engineering in SrFeO2.5/La2/3Ba1/3MnO3/SrFeO2.5 trilayers." Journal of Physics D: Applied Physics 53, no. 44 (August 6, 2020): 445001. http://dx.doi.org/10.1088/1361-6463/aba299.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

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.

Full text
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.
APA, Harvard, Vancouver, ISO, and other styles
8

Schmidt, M., and W. A. Kaczmarek. "Synthesis of SrFeO2.5 from mechanically activated reactants." Journal of Alloys and Compounds 283, no. 1-2 (February 1999): 117–21. http://dx.doi.org/10.1016/s0925-8388(98)00867-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Xu, Haohang, Qingyuan Liu, Xuebo Zhou, Lei Tao, Mingxue Huo, Xianjie Wang, and Yu Sui. "Anisotropic transport properties of tetragonal SrFeO2.84 single crystal." Solid State Communications 318 (September 2020): 113992. http://dx.doi.org/10.1016/j.ssc.2020.113992.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Yokota, Takeshi, Shinya Kito, Shotaro Murata, Yasutoshi Tsuboi, and Manabu Gomi. "Relationships between Negative Differential Resistances and Resistance Switching Properties of SrFeO2+x Thin Films with Excess Oxygen." Key Engineering Materials 445 (July 2010): 152–55. http://dx.doi.org/10.4028/www.scientific.net/kem.445.152.

Full text
Abstract:
Resistance random access memory (RRAM) is attractive as a next-generation form of nonvolatile memory. We investigated an electric field-induced resistance change of SrFeO2+x film as a candidate for RRAM material. SrFeO2.5-x film prepared at 300 oC showed hysteresis in its current-voltage curve and distinct pulse-switching properties. On the other hand, the sample prepared below 280 oC showed hysteresis in its current-voltage curve but didn’t show pulse-switching properties. The amount of oxygen in the sample and easiness of oxygen migration play important roles in the resistance-switching properties.
APA, Harvard, Vancouver, ISO, and other styles
11

Kito, Shinya, Takeshi Yokota, Shotaro Murata, Yasutoshi Tsuboi, and Manabu Gomi. "Electric Field Induced Resistance Change of SrFeO2.5-x Film." e-Journal of Surface Science and Nanotechnology 8 (2010): 346–48. http://dx.doi.org/10.1380/ejssnt.2010.346.

Full text
APA, Harvard, Vancouver, ISO, and other styles
12

Nallagatla, Venkata Raveendra, and Chang Uk Jung. "Resistive switching behavior in epitaxial brownmillerite SrFeO2.5/Nb:SrTiO3 heterojunction." Applied Physics Letters 117, no. 14 (October 5, 2020): 143503. http://dx.doi.org/10.1063/5.0015151.

Full text
APA, Harvard, Vancouver, ISO, and other styles
13

Khare, Amit, Jaekwang Lee, Jaeseoung Park, Gi-Yeop Kim, Si-Young Choi, Takayoshi Katase, Seulki Roh, et al. "Directing Oxygen Vacancy Channels in SrFeO2.5 Epitaxial Thin Films." ACS Applied Materials & Interfaces 10, no. 5 (January 23, 2018): 4831–37. http://dx.doi.org/10.1021/acsami.7b17377.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Heo, Yooun, Daisuke Kan, and Yuichi Shimakawa. "Nanoscale oxygen ion dynamics in SrFeO2.5+δ epitaxial thin films." Applied Physics Letters 113, no. 22 (November 26, 2018): 221904. http://dx.doi.org/10.1063/1.5046749.

Full text
APA, Harvard, Vancouver, ISO, and other styles
15

Korotin, M. A., V. M. Zainullina, and V. L. Kozhevnikov. "Electronic structure of the high-temperature cubic phase of SrFeO2.5." JETP Letters 102, no. 5 (September 2015): 307–11. http://dx.doi.org/10.1134/s0021364015170063.

Full text
APA, Harvard, Vancouver, ISO, and other styles
16

Shi, Peng, Dong Wang, Tongliang Yu, Ruofei Xing, Zhenfa Wu, Shishen Yan, Lin Wei, et al. "Solid-state electrolyte gated synaptic transistor based on SrFeO2.5 film channel." Materials & Design 210 (November 2021): 110022. http://dx.doi.org/10.1016/j.matdes.2021.110022.

Full text
APA, Harvard, Vancouver, ISO, and other styles
17

Nemudry, A., M. Weiss, I. Gainutdinov, V. Boldyrev, and R. Schöllhorn. "Room Temperature Electrochemical Redox Reactions of the Defect Perovskite SrFeO2.5+x." Chemistry of Materials 10, no. 9 (September 1998): 2403–11. http://dx.doi.org/10.1021/cm980090v.

Full text
APA, Harvard, Vancouver, ISO, and other styles
18

Hirai, Kei, Daisuke Kan, Ryotaro Aso, Noriya Ichikawa, Hiroki Kurata, and Yuichi Shimakawa. "Anisotropic in-plane lattice strain relaxation in brownmillerite SrFeO2.5 epitaxial thin films." Journal of Applied Physics 114, no. 5 (August 7, 2013): 053514. http://dx.doi.org/10.1063/1.4817505.

Full text
APA, Harvard, Vancouver, ISO, and other styles
19

Saleem, Muhammad Shahrukh, Bin Cui, Cheng Song, Yiming Sun, Youdi Gu, Ruiqi Zhang, Muhammad Umer Fayaz, et al. "Electric Field Control of Phase Transition and Tunable Resistive Switching in SrFeO2.5." ACS Applied Materials & Interfaces 11, no. 6 (January 21, 2019): 6581–88. http://dx.doi.org/10.1021/acsami.8b18251.

Full text
APA, Harvard, Vancouver, ISO, and other styles
20

NEMUDRY, A., M. WEISS, I. GAINUTDINOV, V. BOLDYREV, and R. SCHOELLHORN. "ChemInform Abstract: Room Temperature Electrochemical Redox Reactions of the Defect Perovskite SrFeO2.5+x." ChemInform 29, no. 47 (June 18, 2010): no. http://dx.doi.org/10.1002/chin.199847011.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Shimakawa, Yuichi, Masato Goto, and Midori Amano Patino. "Topotactic Oxygen Release and Incorporation in AFeO3 with Fe4+, AFeO2.5 with Fe3+, and AFeO2 with Fe2+ (A = Ca and Sr): Dedicated to the Occasion of the 100th Birthday of Prof. John B. Goodenough." ECS Journal of Solid State Science and Technology 11, no. 4 (April 1, 2022): 043004. http://dx.doi.org/10.1149/2162-8777/ac62ee.

Full text
Abstract:
Oxygen contents in perovskite-structure Fe oxides can change in accordance with the valence states of Fe, i.e., AFeO3 with Fe4+, AFeO2.5 with Fe3+, and AFeO2 with Fe2+ (A = Ca and Sr). AFeO3 has a fully oxygenated simple-perovskite structure, and the unusual high valence Fe4+ in AFeO3 is easily reduced to relatively stable Fe3+ by releasing oxygen. On the other hand, AFeO2 has an infinite-layer structure, and the unusual square-planar coordination of Fe2+ in AFeO2 changes to tetrahedral and octahedral Fe3+ by incorporating oxygen. Sample weight measurements by thermogravimetry and corresponding phase analysis with synchrotron X-ray diffraction data revealed that the difference in the A-site cation strongly influenced the oxygen release and incorporation behaviors. In ambient air, topotactic changes of AFe4+O3 → AFe3+O2.5 ← AFe2+O2 for both A = Ca and Sr can occur by releasing and incorporating oxygen in the perovskite structure frameworks. Nonstoichiometric phases with oxygen vacancies are present between SrFeO3 and SrFeO2.5.
APA, Harvard, Vancouver, ISO, and other styles
22

Wang, Dashan, Xiaomei Du, James J. Tunney, Michael L. Post, and Raynald Gauvin. "TEM Investigation of Interfacial Reactions Between SrFeO2.5+x Thin Films and Silicon, Sapphire Substrates." Microscopy and Microanalysis 10, S02 (August 2004): 572–73. http://dx.doi.org/10.1017/s1431927604884940.

Full text
APA, Harvard, Vancouver, ISO, and other styles
23

Zhu, Liang, Lei Gao, Lifen Wang, Zhi Xu, Jianlin Wang, Xiaomin Li, Lei Liao, et al. "Atomic-Scale Observation of Structure Transition from Brownmillerite to Infinite Layer in SrFeO2.5 Thin Films." Chemistry of Materials 33, no. 9 (April 26, 2021): 3113–20. http://dx.doi.org/10.1021/acs.chemmater.0c04683.

Full text
APA, Harvard, Vancouver, ISO, and other styles
24

Tanasescu, S. "Thermodynamic properties of the SrFeO2.5 and SrMnO2.5 brownmillerite-like compounds by means of EMF-measurements." Solid State Ionics 134, no. 3-4 (October 2, 2000): 265–70. http://dx.doi.org/10.1016/s0167-2738(00)00731-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
25

Zainullina, V. M., I. A. Leonidov, and V. L. Kozhevnikov. "Specific features of the formation of oxygen defects in the SrFeO2.5 ferrate with a brownmillerite structure." Physics of the Solid State 44, no. 11 (November 2002): 2063–66. http://dx.doi.org/10.1134/1.1521456.

Full text
APA, Harvard, Vancouver, ISO, and other styles
26

Xing, Yao Long, Bumsu Park, Zhen Wang, Kyeong Tae Kang, Jinsol Seo, Jong Chan Kim, Hu Young Jeong, Woo Seok Choi, and Sang Ho Oh. "In situ Negative Cs HRTEM Imaging of Topotactic Phase Transformation from Perovskite SrFeO3 to Brownmillerite SrFeO2.5." Microscopy and Microanalysis 25, S2 (August 2019): 1482–83. http://dx.doi.org/10.1017/s1431927619008146.

Full text
APA, Harvard, Vancouver, ISO, and other styles
27

Maity, Avishek, Rajesh Dutta, Bartosz Penkala, Monica Ceretti, Angélique Letrouit-Lebranchu, Dmitry Chernyshov, and Werner Paulus. "Solid-state reactivity explored in situ by synchrotron radiation on single crystals of SrFeO2.5 during electrochemical oxygen intercalation." Acta Crystallographica Section A Foundations and Advances 72, a1 (August 28, 2016): s421. http://dx.doi.org/10.1107/s2053273316093840.

Full text
APA, Harvard, Vancouver, ISO, and other styles
28

Heo, Yooun, Daisuke Kan, and Yuichi Shimakawa. "Publisher's Note: “Nanoscale oxygen ion dynamics in SrFeO2.5+δ epitaxial thin films” [Appl. Phys. Lett. 113, 221904 (2018)]." Applied Physics Letters 114, no. 7 (February 18, 2019): 079901. http://dx.doi.org/10.1063/1.5092959.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

Nallagatla, Venkata Raveendra, Jihun Kim, Kyoungjun Lee, Seung Chul Chae, Cheol Seong Hwang, and Chang Uk Jung. "Complementary Resistive Switching and Synaptic-Like Memory Behavior in an Epitaxial SrFeO2.5 Thin Film through Oriented Oxygen-Vacancy Channels." ACS Applied Materials & Interfaces 12, no. 37 (August 17, 2020): 41740–48. http://dx.doi.org/10.1021/acsami.0c10910.

Full text
APA, Harvard, Vancouver, ISO, and other styles
30

Marik, Sourav, Madhu Chennabasappa, Javier Fernández-Sanjulián, Emmanuel Petit, and Olivier Toulemonde. "Effect of Co Substitution on the Crystal and Magnetic Structure of SrFeO2.75−δ: Stabilization of the “314-Type” Oxygen Vacancy Ordered Structure without A-Site Ordering." Inorganic Chemistry 55, no. 19 (September 13, 2016): 9778–89. http://dx.doi.org/10.1021/acs.inorgchem.6b01554.

Full text
APA, Harvard, Vancouver, ISO, and other styles
31

Piovano, Andrea, Giovanni Agostini, Anatoly I. Frenkel, Tanguy Bertier, Carmelo Prestipino, Monica Ceretti, Werner Paulus, and Carlo Lamberti. "Time Resolved in Situ XAFS Study of the Electrochemical Oxygen Intercalation in SrFeO2.5 Brownmillerite Structure: Comparison with the Homologous SrCoO2.5 System." Journal of Physical Chemistry C 115, no. 4 (December 8, 2010): 1311–22. http://dx.doi.org/10.1021/jp107173b.

Full text
APA, Harvard, Vancouver, ISO, and other styles
32

Isoda, Yosuke, Daisuke KAN, Takuya Majima, and Yuichi SHIMAKAWA. "Orientation-dependent electrochemical reduction and proton evolution in the oxygen-deficient perovskite SrFeO2.5+y ." Applied Physics Express, December 16, 2022. http://dx.doi.org/10.35848/1882-0786/acac60.

Full text
Abstract:
Abstract Electrochemical reactions with insertions of ions in solids depend on crystallographic orientations. We investigated electrochemical responses of (100), (110), and (111)-oriented oxygen-deficient perovskite SrFeO2.5+y epitaxial films in electric-field-effect transistor structures with the proton-conducting electrolyte Nafion as a gate insulator. We found that only (100)-oriented SrFeO2.5+y films exhibit changes associated with gate-voltage-induced electrochemical reductions. Furthermore, elastic recoil detection analysis shows that electrochemically reduced (100) films can accommodate protons, forming the proton-containing oxide H0.11SrFeO2.5+y . Our results show that oxygen vacancies form preferentially along the {100} axes and ion diffusion in electrochemical reactions occurs dominantly along the {100} directions in SrFeO2.5+y .
APA, Harvard, Vancouver, ISO, and other styles
33

Sanders, Brian W., and Michael L. Post. "Deposition of Thin Film SrFeO2.5+x by Pulsed Laser Ablation." MRS Proceedings 285 (January 1, 1992). http://dx.doi.org/10.1557/proc-285-427.

Full text
Abstract:
ABSTRACTPulsed laser ablation has been used to deposit thin perovskite films based on the formula: SrFeO2.5+x (x = 0 to ≈ 0.5). Good quality films have been deposited on (1102) and AT cut quartz substrates at temperatures ranging from 300 to 1130 K. Films grown below 770 K showed little or no preferential crystallinity. Temperatures around 913 K produced films predominantly oriented (200), while temperatures greater than 1000 K produced films with (110) orientation. Films were grown from pellets of two compositions (SrFeO2.5, and SrFeO≈3). The former had a higher ablation threshold than the latter. The atmosphere during cooling had a greater effect on the film's oxygen content than the growth atmosphere. Films cooled in vacuum had the brownmillerite structure (x=0), whereas films cooled in 53.3 kPa oxygen had the cubic perovskite structure (x≈0.5).
APA, Harvard, Vancouver, ISO, and other styles
34

Zhao, Y. M., R. Mahendiran, N. Nguyen, B. Raveau, and R. H. Yao. "SrFeO2.95: A helical antiferromagnet with large magnetoresistance." Physical Review B 64, no. 2 (June 20, 2001). http://dx.doi.org/10.1103/physrevb.64.024414.

Full text
APA, Harvard, Vancouver, ISO, and other styles
35

Wang, D., J. Tunney, X. Du, M. Post, and R. Gauvin. "Thermal Stability of the SrFeO2.5+x (0.4." Microscopy and Microanalysis 13, S02 (August 2007). http://dx.doi.org/10.1017/s1431927607071267.

Full text
APA, Harvard, Vancouver, ISO, and other styles
36

Zainullina, Veronika M., Michael A. Korotin, Ilia A. Leonidov, and Viktor L. Kozhevnikov. "High-temperature transition in SrFeO2.5: LSDA+U simulation." European Physical Journal B 88, no. 10 (October 2015). http://dx.doi.org/10.1140/epjb/e2015-60427-4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
37

Shimakawa, Yuichi, Satoru Inoue, Masanori Kawai, Noriya Ichikawa, Masaichiro Mizumaki, and Naomi Kawamura. "Single-Crystal Thin Films of SrFeO2 and LaNiO2 with Infinite-Layer Structures." MRS Proceedings 1148 (2008). http://dx.doi.org/10.1557/proc-1148-pp07-08.

Full text
Abstract:
AbstractInfinite-layer-structure epitaxial thin films of SrFeO2 and LaNiO2 respectively were prepared by low-temperature reduction with CaH2 from brownmillerite SrFeO2.5 and perovskite LaNiO3 epitaxial thin films grown on single-crystal substrates. The reduction process, removing oxygen ions from the perovskite-structure framework and causing rearrangements of oxygen ions, topotactically transforms the initial compounds to the c-axis oriented infinite-layer-structure epitaxial thin films. Consequently, the oxidation state of transition-metal ions in the film changed in wide ranges.
APA, Harvard, Vancouver, ISO, and other styles
38

Saleem, Muhammad Shahrukh, Cheng Song, Youdi Gu, Ruyi Chen, Muhammad Umer Fayaz, Yanmin Hao, and Feng Pan. "Orientation control of oxygen vacancy channels in brownmillerite SrFeO2.5." Physical Review Materials 4, no. 1 (January 10, 2020). http://dx.doi.org/10.1103/physrevmaterials.4.014403.

Full text
APA, Harvard, Vancouver, ISO, and other styles
39

Guo, Jifeng, Rui Liu, Yuxuan Ma, Meiqi Wang, Jing Li, Xiao Wei, and Luyao Zhao. "Synthesis and Characterization of SrFeO2.73/Bi2MoO6 Heterojunction with Enhanced Photocatalytic Activity." Catalysis Letters, January 1, 2021. http://dx.doi.org/10.1007/s10562-020-03488-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
40

Sanders, Brian W., Jianhua Yao, and Michael L. Post. "Thin Films of SrFeO2.5+x - Effect of Preferred Orientation on Oxygen Uptake." MRS Proceedings 343 (1994). http://dx.doi.org/10.1557/proc-343-463.

Full text
Abstract:
ABSTRACTPulsed laser ablation has been used to deposit thin films of SrFeO25+x (x = 0 to ≈0.5). Previous work has shown that the orientation of the films, determined by powder x-ray diffraction depended strongly upon the deposition temperature. Films grown below 770 K showed little or no orientation. A growth temperature of 900 K resulted in films oriented (200). Growth temperatures of > 1000 K produced films oriented predominantly (110). At 673 K in an oxygen atmosphere, oriented films readily converted from the oxygen deficient brownmillerite form (x=0) to the oxygen rich cubic (or distorted cubic) perovskite form (x≈0.3). Films which exhibited no initial orientation did not react with oxygen under these conditions. Cycling non-oriented films between 230 and 800 ppm of oxygen in 101.3 kPa of nitrogen at 673 K resulted in weak (110) orientation. Once oriented, the films reacted readily with oxygen and exhibited measurable resistance changes. The conversion from oxygen deficient to oxygen rich form was monitored by x-ray diffraction and the DC resistance of the films.
APA, Harvard, Vancouver, ISO, and other styles
41

Post, Michael, and Jianhua Yao. "Optical Transmittance of Thin Films of SrFeO2.5+x at Elevated Temperatures and Applications to Gas Sensing." MRS Proceedings 403 (1995). http://dx.doi.org/10.1557/proc-403-533.

Full text
Abstract:
AbstractNon-stoichiometric perovskites with the general formula SrFeO2.5+x have potential in oxygen sensing applications. Thin films of these compositions have been grown onto various substrates by pulsed laser deposition techniques. At elevated temperatures, (T > 550K), the films react rapidly and reversibly with oxygen and the bulk oxygen content, x, of the films changes. Accompanying the change in oxygen stoichiometry are significant changes in the optical transmittance and reflectance of the films. Transmission spectrophotometry in the uv-vis region has been used to determine the relationship of transmittance with oxygen composition in the gas phase. Spectrophotometric data have been obtained by a batch method and also in-situ in a flow cell at T = 690K. The data show a large variation in transmittance, exceeding 103 for the batch measurements, with SrFeO3 showing the highest opacity. The design of the flow cell is also described.
APA, Harvard, Vancouver, ISO, and other styles
42

Gong, Nanqi, Jianlin Wang, Shuai Huang, Liangbing Ge, Zheling Shan, Jian Zhang, Haoliang Huang, Ranran Peng, Zhengping Fu, and Yalin Lu. "Realization of high-quality Sr4Fe6O13 epitaxial film and its phase competition with SrFeO2.5." Ceramics International, November 2022. http://dx.doi.org/10.1016/j.ceramint.2022.11.191.

Full text
APA, Harvard, Vancouver, ISO, and other styles
43

Batuk, Maria, Daphne Vandemeulebroucke, Monica Ceretti, Werner Paulus, and Joke Hadermann. "Topotactic redox cycling in SrFeO2.5+δ explored by 3D electron diffraction in different gas atmospheres." Journal of Materials Chemistry A, 2022. http://dx.doi.org/10.1039/d2ta03247c.

Full text
Abstract:
For oxygen conducting materials applied in solid oxide fuel cells and chemical-looping processes, the understanding of the oxygen diffusion mechanism and the materials’ crystal structure at different stages of the...
APA, Harvard, Vancouver, ISO, and other styles
44

Wang, D., X. Du, J. J. Tunney, M. L. Post, and R. Gauvin. "TEM Characterization of Phase Separation and Transformation at the Thin Film Interfaces in the SrFeO2.5+x/SiO2/Si System." Microscopy and Microanalysis 11, S02 (August 2005). http://dx.doi.org/10.1017/s1431927605504215.

Full text
APA, Harvard, Vancouver, ISO, and other styles
45

Jo, Janghyun, Venkata Raveendra Nallagatlla, Susant Kumar Acharya, Youngho Kang, Yoonkoo Kim, Sangmoon Yoon, Sangmin Lee, et al. "Effects of the Heterointerface on the Growth Characteristics of a Brownmillerite SrFeO2.5 Thin Film Grown on SrRuO3 and SrTiO3 Perovskites." Scientific Reports 10, no. 1 (March 2, 2020). http://dx.doi.org/10.1038/s41598-020-60772-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography