Giant Negative Thermal Expansion in the Iron Perovskite SrCu3Fe4O12

✍ Scribed by Prof. Dr. Ikuya Yamada; Kazuki Tsuchida; Prof. Dr. Kenya Ohgushi; Naoaki Hayashi; Dr. Jungeun Kim; Dr. Naruki Tsuji; Prof. Dr. Ryoji Takahashi; Prof. Dr. Masafumi Matsushita; Prof. Dr. Norimasa Nishiyama; Prof. Dr. Toru Inoue; Prof. Dr. Tetsuo Irifune; Dr. Kenichi Kato; Dr. Masaki Takata; Prof. Dr. Mikio Takano

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 463 KB
• Volume: 50
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.201102228

✦ Synopsis

The great discovery of high-temperature superconductivity in layered cupric oxides has provided opportunities to systematically reinvestigate the electronic properties of 3d transition-metal oxides theoretically and experimentally. [1] As a result, it has become possible to quantify a set of electronic parameters such as d-d electron correlation, p-d charge transfer, and others as a function of atomic number and valence (number of d electrons). We are interested in the comparison of Fe II , Fe III , and Fe IV oxides such as Fe II O, LaFe III O 3 (LFO), and SrFe IV O 3 (SFO) from this viewpoint.