Giant negative thermal expansion in the iron perovskite SrCu 3Fe4O12

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

Research output: Contribution to journalArticlepeer-review

104 Citations (Scopus)


Big and cold: Strong internal compression of the Sr ion in the novel perovskite SrCu3Fe4O12 (see structure) leads to giant negative thermal expansion (NTE) between 170 and 270 K. Mössbauer spectroscopy shows charge disproportionation of FeIV to Fe III and FeV below 200 K. Thus, the isoelectric substitution of the A-site cation can induce a drastic change of the structural and electronic properties in ACu3Fe4O12 perovskites.

Original languageEnglish
Pages (from-to)6579-6582
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number29
Publication statusPublished - 2011 Jul 11
Externally publishedYes


  • Mössbauer spectroscopy
  • charge disproportionation
  • high-pressure chemistry
  • negative thermal expansion
  • perovskite phases

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)


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