A Mössbauer study of the magnetization of γ-Fe2O3 nanoparticles in applied fields: the influence of interaction with CoO

作者: Cathrine Frandsen , Helge K Rasmussen , Steen Mørup

DOI: 10.1088/0953-8984/16/39/030

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摘要: By use of Mossbauer spectroscopy we have followed the gradual alignment magnetization γ-Fe2O3 nanoparticles as a function applied field. At moderate fields, was less aligned with field if particles were mixed CoO nanoparticles. This indicates strong exchange interaction between and The effect manifests itself in way which can be difficult to distinguish from localized spin canting.

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