典型文献
Performance of switch between exchange bias and coercivity:Influences of antiferromagnetic anisotropy and exchange coupling
文献摘要：
The study on temperature dependence of exchange bias field and coercivity is crucial to solving the writ-ing/reading dilemma in magnetic recording.Motivated by recent experimental findings,a complete switch between exchange bias field and coercivity with temperature is proposed,and the performance,charac-terized by average switching temperature(Ts)and switching temperature width(ΔTw),controlled by antiferromagnetic anisotropy(KAF)and exchange coupling(JAF)constants is studied based on a Monte-Carlo simulation.The results show that a linear relationship between Ts and KAF is established when KAF is above a critical value,while Ts is weakly influenced by JAF.On the contrary,ΔTw is insensi-tive to KAF,while strongly depends on JAF.Besides overcoming thermal energy,the increase of KAF for a small JAF guarantees the completely frozen states in the antiferromagnetic layers during magnetizing at higher temperature,below which the exchange bias field exists with a negligible coercivity.Otherwise,for a large JAF,the uncompensated antiferromagnetic magnetization behavior during the ferromagnetic magnetization reversal becomes complicated,and the switching process in the low temperature range depends on the irreversibility of uncompensated antiferromagnetic magnetization reversal during mag-netizing,while in the high temperature range mainly influenced by the field-cooling process,resulting in a large ΔTw.This work provides an opportunity to control/optimize the performance of the temperature-induced switch between unidirectional and uniaxial symmetries through precisely tuning KAF and/or JAF to meet different application demands in the next generation information technology.
文献关键词：
中图分类号：
作者姓名：
Ruijun Li;Fan Zhang;Yong Hu
作者机构：
Department of Physics,College of Sciences,Northeastern University,Shenyang 110819,China;State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China;Department of Logistics Management,Liaoning Provincial College of Communications,Shenyang 110122,China
文献出处：
引用格式：
[1]Ruijun Li;Fan Zhang;Yong Hu-.Performance of switch between exchange bias and coercivity:Influences of antiferromagnetic anisotropy and exchange coupling)[J].材料科学技术（英文版）,2022(25):186-195
A类：
KAF,JAF,insensi,uncompensated,netizing
B类：
Performance,between,exchange,bias,coercivity,Influences,antiferromagnetic,anisotropy,coupling,study,temperature,dependence,field,crucial,solving,writ,reading,dilemma,recording,Motivated,by,recent,experimental,findings,proposed,performance,charac,terized,average,switching,Ts,width,Tw,controlled,constants,studied,Monte,Carlo,simulation,results,show,that,linear,relationship,established,when,above,critical,value,while,weakly,influenced,On,contrary,tive,strongly,depends,Besides,overcoming,thermal,energy,increase,small,guarantees,completely,frozen,states,layers,during,magnetizing,higher,below,which,exists,negligible,Otherwise,large,magnetization,behavior,reversal,becomes,complicated,process,range,irreversibility,mainly,cooling,resulting,This,work,provides,opportunity,optimize,induced,unidirectional,uniaxial,symmetries,through,precisely,tuning,meet,different,application,demands,next,generation,information,technology
AB值：
0.460042
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
