2006•Applied Physics LettersRequires access

Method for analyzing the in-plane uniaxial anisotropy of soft magnetic thin film

Desheng Xue, Xiaolong Fan, Changjun Jiang

Abstract

Based on the vibrating sample magnetometer, a method is proposed to comprehensively analyze the in-plane uniaxial anisotropy of magnetic thin film. It can be used to determine accurately the values of effective anisotropy magnetic field Ha, anisotropy constants K1 and K2, as well as the directions of easy and hard axes. All of them can be carried out by fitting experimental M∕Ms-θ0 curves with theoretical equations that only require one measurement. Using this method an effective anisotropy magnetic field Ha=25.3Oe and anisotropy constants K1=2.24×104erg∕cm3 and K2=−4.7×103erg∕cm3 for the Co92Zr8 thin film were derived.

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Key concepts: Anisotropy, Magnetic anisotropy, Magnetometer, Condensed matter physics, Thin film, Materials science, Magnetic field, Field (mathematics)