Grain size influence upon magnetic behavior at nanoscale. A computational approach
Journal of Magnetism and Magnetic Materials(2020)
摘要
•Boundaries generate loss of correlation by disorder and strong exchange interaction.•Changes of blocking temperature are correlated with domain energy in the grain cores.•Local anisotropy in boundaries explains coercive grain size dependence.•Atomistic spin simulations suitable to describe nanogranular magnetic materials.
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关键词
Nanogranular films,Superparamagnetic state,Boundary anisotropy,Coercivity
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