Annealing induced superconductivity in perovskite-related iron-based mixed anion compounds Sr2VFeAsO3-δ

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Polycrystalline samples of Sr2VFeAsO3-δ with perovskite-type carrier blocking layers were prepared by a solid state reaction using an alumina tube in a sealed silica tube. Sr2VFeAsO 3-δ samples which were prepared as nominally δ 0 were not synthesized as a single phase, suggesting that finite oxygen deficiency is inevitable for the compound. Although a sample, which exhibits relatively larger lattice volume, does not exhibit bulk superconductivity at temperatures 5 K, finite superconducting transition temperatures appear in the sample which exhibits smaller lattice volumes. These results support making the electronic and magnetic phase diagram of Sr2VFeAsO3-δ.

元の言語English
記事番号17E157
ジャーナルJournal of Applied Physics
113
発行部数17
DOI
出版物ステータスPublished - 2013 5 7

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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