Temperature Dependence of Magnetic Properties in Epitaxial FePt/FeRh Bilayer
Temperature Dependence of Magnetic Properties in Epitaxial FePt/FeRh Bilayer
复制标题
DOI：
10.1109/tmag.2009.2018685
复制
发表时间：
2009-05
影响因子：
2.1
通讯作者：
N. T. Nam;W. Lu;Takao Suzuki
中科院分区：
文献类型：
--
作者：
N. T. Nam;W. Lu;Takao Suzuki
系统地研究了FePt/FeRh双层膜的结构和磁性随温度的变化。FeRh单层膜的相变温度高于FePt/FeRh双层膜。FePt/FeRh双层膜在转变温度下的矫顽力急剧下降。讨论了交换偏置场和各向异性常数与FePt和FeRh厚度的关系。有趣的是，FePt/FeRh双层膜中出现了交换偏置效应，单向各向异性常数非常大，可达1 erg/cm 2，表明该系统可应用于自旋阀传感器和热辅助磁记录介质。
A systematic investigation of structural and magnetic properties of FePt/FeRh bilayers on dependence of temperature has been carried out. The transition temperature of single FeRh layer was higher than that of FePt/FeRh bilayer. A sharp decrease in coercivity is observed at transition temperature for FePt/FeRh bilayer. The thickness FePt and FeRh dependence of exchange bias field and unidirectional anisotropy constant are discussed. Of interest is that the exchange bias effect appears in FePt/FeRh bilayer and unidirectional anisotropy constant is very large up to 1 erg/cm 2, suggesting that this system can be applied to spin-valve sensors and heat assisted magnetic recording medium.