Direct observation of negative thermal expansion in SrCu3Fe4O12

Ikuya YAMADA; Kentaro SHIRO; Kengo OKA; Masaki AZUMA; Tetsuo IRIFUNE

doi:10.2109/jcersj2.121.912

Papers

Direct observation of negative thermal expansion in SrCu₃Fe₄O₁₂

Ikuya YAMADA, Kentaro SHIRO, Kengo OKA, Masaki AZUMA, Tetsuo IRIFUNE

著者情報

キーワード: Negative thermal expansion, Perovskite, Unusual high valence ion, High-pressure synthesis, Dilatometric analysis

ジャーナルフリー

2013 年 121 巻 1418 号 p. 912-914

DOI https://doi.org/10.2109/jcersj2.121.912

詳細

抄録

We report a direct observation of the negative thermal expansion in an iron-based perovskite oxide SrCu₃Fe₄O₁₂ by using a thermomechanical analyzer and strain gauge. Reversibility and small thermal hysteresis in the negative thermal expansion temperature range demonstrate that the negative thermal expansion of this compound is attributed to second-order phase transition.

責任著者(Corresponding author)

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