Noncollinear spin states and competing interactions in half-metals and magnetic perovskites

R. Skomski, J. Zhou, P. A. Dowben, D. J. Sellmyer

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Abstract

The high-field spin structure of magnetic perovskites and related magnetoresistive materials is investigated by model calculations. Competing exchange as well as real-structure-dependent random field, random anisotropy, and Dzyaloshinskii-Moriya interactions yield a noncollinear magnetic structure that may be called a spin colloid. The noncollinear structure, which contributes to the zero- and finite-temperature spin mixing and reduces the magnetoresistance, is strongly field dependent.

Original languageEnglish (US)
Article number10C305
JournalJournal of Applied Physics
Volume97
Issue number10
DOIs
Publication statusPublished - May 15 2005

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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