Giant Negative Thermal Expansion in the Iron Perovskite SrCu 3 Fe 4 O 12 | Zendy

Yamada Ikuya | Zendy; Tsuchida Kazuki | Zendy; Ohgushi Kenya | Zendy; Hayashi Naoaki | Zendy; Kim Jungeun | Zendy; Tsuji Naruki | Zendy; Takahashi Ryoji | Zendy; Matsushita Masafumi | Zendy; Nishiyama Norimasa | Zendy; Inoue Toru | Zendy; Irifune Tetsuo | Zendy; Kato Kenichi | Zendy; Takata Masaki | Zendy; Takano Mikio | Zendy

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Giant Negative Thermal Expansion in the Iron Perovskite SrCu 3 Fe 4 O 12

Author(s) -

Yamada Ikuya,

Tsuchida Kazuki,

Ohgushi Kenya,

Hayashi Naoaki,

Kim Jungeun,

Tsuji Naruki,

Takahashi Ryoji,

Matsushita Masafumi,

Nishiyama Norimasa,

Inoue Toru,

Irifune Tetsuo,

Kato Kenichi,

Takata Masaki,

Takano Mikio

Publication year - 2011

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.201102228

Subject(s) - disproportionation , perovskite (structure) , crystallography , charge (physics) , mössbauer spectroscopy , thermal expansion , materials science , condensed matter physics , chemistry , physics , thermodynamics , quantum mechanics , biochemistry , catalysis

Big and cold : Strong internal compression of the Sr ion in the novel perovskite SrCu 3 Fe 4 O 12 (see structure) leads to giant negative thermal expansion (NTE) between 170 and 270 K. Mössbauer spectroscopy shows charge disproportionation of Fe IV to Fe III and Fe V below 200 K. Thus, the isoelectric substitution of the A ‐site cation can induce a drastic change of the structural and electronic properties in A Cu 3 Fe 4 O 12 perovskites.

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