Magnetization reversal mechanism evaluated by rotational hysteresis loss analysis for the thin film media
Magnetization reversal mechanism evaluated by rotational hysteresis loss analysis for the thin film media
复制标题
通过薄膜介质旋转磁滞损耗分析评估磁化反转机制
DOI：
10.1109/intmag.1992.696668
复制
发表时间：
1992
期刊：
影响因子：
--
通讯作者：
H. Yamasaki
中科院分区：
文献类型：
--
作者：
M. Takahashi;T. Shimatsu;M. Suekane;M. Miyamura;K. Yamaguchi;H. Yamasaki
对CoCrTa、CoNiPt和CoCrPt薄膜介质进行了旋转迟滞损耗分析，通过测量磁各向异性来评估微观结构对矫顽力的影响。在每种介质中，H/sub / k//sup grain/（定义为旋转磁滞损耗W/sub / r/减小的磁场）的大小与矫顽力的大小无关，几乎保持恒定值。随着矫顽力的增大，矫顽力的大小逐渐小于转矩分析计算的磁化强度H/sub p/的开关场。通过对H/sub - k//sup grain/和H/sub - p/的分析，表明每种被测介质中的矫顽力与晶间交换耦合和/或静磁相互作用的程度密切相关。而在CoNiPt和CoCrPt介质上，矫顽力依赖于旋转迟滞积分，在CoCrTa薄膜中没有观察到两者之间的相关性。>
Rotational hysteresis loss analysis has been carried out for CoCrTa, CoNiPt, and CoCrPt thin-film media to evaluate the influence of microstructure on coercive force through the measurement of magnetic anisotropy. In each medium, the magnitudes of H/sub k//sup grain/ defined as a magnetic field where rotational hysteresis loss W/sub r/ diminishes remain almost a constant value independently of the values of coercive force. With increasing coercive force, the magnitude of the coercive force gradually becomes smaller than that of the switching field of magnetization H/sub p/ evaluated by torque analysis. Through the analysis of H/sub k//sup grain/ and H/sub p/, it is suggested that the coercive force in each examined medium is strongly dependent on the degree of intergranular exchange coupling and/or magnetostatic interactions. While on CoNiPt and CoCrPt media coercive force depends on the rotational hysteresis integral, no correlation between them was observed in CoCrTa films. >