Unconventional Colossal Magnetoresistance in Sodium Chromium Oxide with a Mixed-Valence State

Unconventional Colossal Magnetoresistance in Sodium Chromium Oxide with a Mixed-Valence State

Spin frustration and the unusual electronic state of Cr4+ ions are the origins of unconventional colossal magnetoresistance (CMR) in NaCr2O4, a new member of the rare mixed‐valence chromium oxides. CMR materials have previously been limited to almost only manganese oxides; the discovery of the CMR i...

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Veröffentlicht in:Angewandte Chemie International Edition 2012-07, Vol.51 (27), p.6653-6656
Hauptverfasser: Sakurai, Hiroya, Kolodiazhnyi, Taras, Michiue, Yuichi, Takayama-Muromachi, Eiji, Tanabe, Yuichi, Kikuchi, Hikomitsu
Format: Artikel
Sprache:eng
Schlagworte:
chromium
electron transport
magnetic properties
magnetoresistance
mixed-valent compounds
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Beschreibung
Zusammenfassung:Spin frustration and the unusual electronic state of Cr4+ ions are the origins of unconventional colossal magnetoresistance (CMR) in NaCr2O4, a new member of the rare mixed‐valence chromium oxides. CMR materials have previously been limited to almost only manganese oxides; the discovery of the CMR in a non‐manganese‐based material opens a new dimension in the quest for novel CMR materials.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201201884