人工晶体学报, 2020, 49 (1): 105, 网络出版: 2020-06-15
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
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0.3 μm到1.2 μm。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。
Abstract
The investigation on the dipolar interactions and magnetization reversal in Ni three-Dimensional antidot arrays (3DAAs) using the first-order reversal curve (FORC) method. Ordered Ni 3DAAs were fabricated by electrochemical deposition into colloidal crystal templates of self-assembled polystyrene spheres. The samples have the same pore size of about 500 nm but different thicknesses, ranging from 0.3 μm to 1.2 μm. 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.
彭圣, 焦超凡, 刘萍, 柴旭朝, 武明义, 焦岳超. 基于一阶反转曲线三维Ni反点阵列磁学特性研究[J]. 人工晶体学报, 2020, 49(1): 105. PENG Sheng, JIAO Chaofan, LIU Ping, CHAI Xuzhao, WU Mingyi, JIAO Yuechao. First-Order Reversal Curve Study on the Magnetic Properties of Nickel Three-Dimensional Antidot Arrays[J]. Journal of Synthetic Crystals, 2020, 49(1): 105.