Magnetic anisotropy and coercivity of Fe3Se4 nanostructures

Gen Long, Hongwang Zhang, Da Li, Renat Sabirianov, Zhidong Zhang, Hao Zeng

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

The hard magnetic properties of Fe3Se4 nanostructures were studied both experimentally and theoretically. Magnetic measurements showed that Fe3Se4 nanoparticles can exhibit giant coercivity exceeding 40 kOe at low temperature (10 K). This unusually large coercivity is attributed to the uniaxial magnetocrystalline anisotropy of the monoclinic structure of Fe3Se4 with ordered cation vacancies. The measured anisotropy constant is 1.0 107erg/cm 3, consistent with the result from first-principles calculations. The magnetization reversal mechanism of the nanoparticles is found to be incoherent spin rotation.

Original languageEnglish (US)
Article number202103
JournalApplied Physics Letters
Volume99
Issue number20
DOIs
StatePublished - Nov 14 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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