Temperature dependence of the magnetization of canted spin structures

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Numerous studies of the low-temperature saturation magnetization of ferrimagnetic nanoparticles and diamagnetically substituted ferrites have shown an anomalous temperature dependence. It has been suggested that this is related to freezing of canted magnetic structures. We present models for the temperature dependence of the magnetization of a simple canted spin structure in which relaxation can take place at finite temperatures between spin configurations with different canting angles. We show that the saturation magnetization may either decrease or increase with decreasing temperature, depending on the ratio of the exchange coupling constants. This is in agreement with experimental observations.
Original languageEnglish
JournalJournal of Magnetism and Magnetic Materials
Publication date2012
Volume324
Issue19
Pages3218-3222
ISSN0304-8853
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 1

Keywords

  • Nanoparticle, Ferrite, Spin canting, Magnetization, Magnetic relaxation
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