Theoretical investigation on tunneling magnetoresistance in ferromagnetic/anti-ferromagnetic core/shell system

被引：0

作者：

YANG YanMin & HUANG ZhiGao * College of Physics and Energy

机构：

来源：

Science China(Physics,Mechanics & Astronomy) | 2012年 / 11期

基金：

中国国家自然科学基金;

关键词：

tunneling magnetoresistance; nano-particle arrays; Coulomb blockade effect; spin-dependent scattering; Monte Carlo simulation;

D O I：

暂无

中图分类号：

O482.5 [磁学性质];

学科分类号：

070205 ; 0805 ; 080502 ; 0809 ;

摘要：

Based on Monte Carlo simulations,the effect of structural configuration on the hysteresis behavior and tunneling magnetoresistance(TMR) of composite nanoparticles with ferromagnetic(FM) core/anti-ferromagnetic(AFM) shell is investigated.The simulated results indicate that the coercive field(H c) of composites increases with the decreasing ratio of core-radius(r core) to shell-radius(r shell).When the ratio of r shell to r core is approaching 4:3,H c decreases with increasing AFM thickness.In addition,TMR is found to increase with the decreasing ratio of r core to r shell,resulting from the enhancement of resistance changes in disordered AFM shell.

引用

页码：2038 / 2041

页数：4