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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creator	Sakurai, Hiroya Kolodiazhnyi, Taras Michiue, Yuichi Takayama-Muromachi, Eiji Tanabe, Yuichi Kikuchi, Hikomitsu
description	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.
doi_str_mv	10.1002/anie.201201884
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subjects	chromium electron transport magnetic properties magnetoresistance mixed-valent compounds
title	Unconventional Colossal Magnetoresistance in Sodium Chromium Oxide with a Mixed-Valence State
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