基于一阶反转曲线三维Ni反点阵列磁学特性研究  

First-Order Reversal Curve Study on the Magnetic Properties of Nickel Three-Dimensional Antidot Arrays

作　　者：彭圣[1] 焦超凡 刘萍[1] 柴旭朝 武明义[1] 焦岳超 PENG Sheng;JIAO Chaofan;LIU Ping;CHAI Xuzhao;WU Mingyi;JIAO Yuechao(School of Electric and Information Engineer,Zhongyuan University of Technology,Zhengzhou 450007,China)

机构地区：[1]中原工学院电子信息学院

出　　处：《人工晶体学报》2020年第1期105-108,118,共5页Journal of Synthetic Crystals

基　　金：河南省高等学校青年骨干教师(2017GGJS116);河南省科技攻关项目(182102210516);河南省高等学校重点科研项目(20A120013);中国纺织工业联合会科技指导项目计划(2018104);中原工学院青年骨干教师(2018XQG09)

摘　　要：采用一阶反转曲线方法研究了三维Ni反点阵列中的磁偶极相互作用和磁化反转行为。以自组装聚苯乙烯球为胶体晶体模板,采用电化学沉积法制备出有序的三维Ni反点阵列。样品的孔径尺寸均为大约500 nm,厚度依次从0.3μm到1.2μm。通过一阶反转曲线方法分析表明,随着样品厚度的增加,磁偶极相互作用减小,矫顽力分布变窄。这主要是由于随着厚度的增加,磁偶极相互作用向交换耦合作用转变的结果。The investigation on the dipolar interactions and magnetization reversal in Ni three-Dimensional antidot arrays(3 DAAs)using the first-order reversal curve(FORC)method.Ordered Ni 3 DAAs were fabricated by electrochemical deposition into colloidal crystal templates of self-assembled polystyrene spheres.The samples have the same pore size of about500 nm but different thicknesses,ranging from 0.3μm to 1.2μm.The FORC diagram analysis reveals a decrease in the magnetic dipolar interaction with the increasing sample thickness,as well as a decrease in the coercivity distribution.This results from the transition from the dipolar interaction to the exchange coupling as the thickness increases.

关 键 词：一阶回转曲线 磁化反转 反点阵列 

分 类 号：O472.5[理学—半导体物理] O469[理学—物理]