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Zeitschrift für Kristallographie - Crystalline Materials

Editor-in-Chief: Pöttgen, Rainer

Ed. by Antipov, Evgeny / Boldyreva, Elena V. / Friese, Karen / Huppertz, Hubert / Jahn, Sandro / Tiekink, E. R. T.

IMPACT FACTOR 2018: 1.090
5-year IMPACT FACTOR: 2.159

CiteScore 2018: 1.47

SCImago Journal Rank (SJR) 2018: 0.892
Source Normalized Impact per Paper (SNIP) 2018: 0.722

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Volume 225, Issue 11


High-spin to Intermediate-spin Transition, Insulator-metal Transition, and Antiferro- to Ferromagnetic Transition in SrFeO2 under High Pressure

Takateru Kawakami / Hiroshi Kageyama
Published Online: 2010-08-31 | DOI: https://doi.org/10.1524/zkri.2010.1311


SrFeO2 adapts the infinite layer structure bearing an unprecedented square-planar coordination around a divalent iron in high-spin state (S = 2). In an ambient pressure, this material is a good insulator with an antiferromagentic order at 473 K. We found, however, that pressurization of 34 GPa induces a spin-state transition into an intermediate spin state (S = 1). The transition is accompanied by a significant reduction in the electrical resistivity, making it a metal. Furthermore, the antiferromagnetic state changes into a ferromagnetic state keeping its transition temperature well ambient. The pressure-induced state is relatively stable, existing at least 80 GPa.

Keywords: Infinite layer; Square planar coordination; High pressure; Spin transition; Iron oxide

About the article

* Correspondence address: Kyoto University, Graduate School of Engineering, Department of Energy and Hydrocarbon Chemistry, 615-8510 Kyoto, Japan,

Published Online: 2010-08-31

Published in Print: 2010-11-01

Citation Information: Zeitschrift für Kristallographie Crystalline Materials, Volume 225, Issue 11, Pages 504–507, ISSN (Print) 0044-2968, DOI: https://doi.org/10.1524/zkri.2010.1311.

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