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Study of oxygen ion diffusion in (Ba$$_{0.5}$$Sr$$_{0.5}$$)(Co$$_{0.8}$$Fe$$_{0.2}$$)O$$_{2.33-delta}$$ through ${it in-situ}$ neutron diffractions at 300 and 720 K

Ito, Takanori*; Hirai, Takene*; Yamashita, Junichi*; Watanabe, Shoji*; Kawata, Etsuya*; Kitamura, Naoto*; Idemoto, Yasushi*; Igawa, Naoki   

We analyze the mechanism of oxygen ion diffusion in (Ba$$_{0.5}$$Sr$$_{0.5}$$)(Co$$_{0.8}$$Fe$$_{0.2}$$)O$$_{2.33-delta}$$ by using the Rietveld refinement, the maximum entropy method (MEM) analysis, and MEM-based pattern fitting (MPF) with ${it in-situ}$ neutron diffractions at 300 and 720 K. We speculate that when $$U$$$$_{rm aniso}$$ and neutron scattering density of O1(4${it c}$) site with a large number of vacancies metamorphose into that with anisotropy directed toward the O1(4${it c}$) and O2(8${it d}$) sites at 720 K, the oxygen ions diffuse along the paths between O1(4${it c}$) and O1(4${it c}$), and O1(4${it c}$) and O2(8${it d}$).

Language

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English

Journal

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Physica B; Condensed Matter

Volume

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405

Number

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8

Pages

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p.2091 - 2096

Publication Year/Month

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2010/04

Meeting title

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Held date

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Location (country)

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Patent information

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PDF

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Paper URL

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https://doi.org/10.1016/j.physb.2010.01.109

DOI for research data

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Keywords

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no keyword

Research Facility

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JRR-3M(研究炉3)  

Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

InCites™

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Percentile:55.02

Category:Physics, Condensed Matter

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