磁场角度对人工反铁磁体磁反转的影响  

Effect of magnetic field angle on the magnetic reversal in artificial antiferromagnet

作　　者：何开宙 员朝鑫 谢明玲 何永成 王向谦[1,2] HE Kai-zhou;YUN Chao-xin;XIE Ming-ling;HE Yong-cheng;WANG Xiang-qian(Institute of Sensor Technology,Gansu Academy of Sciences,Lanzhou 730000,China;Key Laboratory of Sensor and Sensing Technology,Lanzhou 730000,China)

机构地区：[1]甘肃省科学院传感技术研究所,甘肃兰州730000 [2]甘肃省传感器与传感技术重点实验室,甘肃兰州730000

出　　处：《磁性材料及器件》2024年第3期15-20,共6页Journal of Magnetic Materials and Devices

基　　金：甘肃省青年科技基金项目(22JR11RA206,21JR11RA216,22JR5RA776);甘肃省科学院青年科技创新基金项目(2021QN-03,2023QN-05)。

摘　　要：研究了具有垂直磁各向异性人工反铁磁的磁反转,人工反铁磁的四种稳定磁态由层间磁矩的相互排列决定,并受层间交换相互作用和塞曼能的控制。测量了人工反铁磁不同磁场角度的磁滞回线,磁场从易轴方向变化到难轴方向,低场反铁磁耦合平台逐渐向高场倾斜,翻转场和饱和场增高。最后,采用一阶反转曲线分析方法,分析了外磁场角度变化对人工反铁磁中磁反转的影响。In this paper,we present a detailed study of the magnetic reversal in the artificial antiferromagnet(SAF)with perpendicular magnetic anisotropy.The four stable magnetic states of the artificial antiferromagnet are determined by the mutual alignment of magnetic moments in the layers and are controlled by both the magnetic interlayer exchange interaction and the Zeeman energy.The hysteresis loops of artificial antiferromagnet with different magnetic field angles were measured.The magnetic field angle changed from the easy magnetization axis(EA)to the hard axis(HA),with the low field plateau progressively tilting to higher derivatives,the switching field increased,and the saturation field also increased.First order reversal curves(FORC)can be utilized to analyze the magnetic reversal behaviors of artificial antiferromagnet varying with external magnetic field angle.

关 键 词：人工反铁磁体 磁反转 一阶反转曲线 

分 类 号：O469[理学—凝聚态物理]