L.Q. Pan
,
H. Qiu
,
F.P. Wang
金属学报(英文版)
Fe-O/AlOx/Fe-O tunnel junctions were prepared by reactive magnetron sputteringunder mixed working gas Ar+2%O2. The insulating AlOx layer of 1-2nm thicknesswas sputtered directly from Al2O3 target. Electrode layers were made of 80at.% ironand 20at.% oxygen. Bottom Fe-O electrode deposited on glass substrate annealedat 473K at the pressure of 3× 10-4Pa for an hour shows disparate crystalline grainstructure, lower electrical resistance and coercivity compared to the as-deposited topelectrode. Only crystalline structrure of α-Fe is observed in both electrodes. Largetunnel magnetoresistance in large Fe-O/AlOx/Fe-O junctions of 1cm2 is observed atroom temperature and the Ⅰ-Ⅴ characteristic curve of the junction shows that thebarrier of the junction is of high quality.
关键词:
spin-dependent
,
null
,
null
,
null
王艳
,
郝瑞宇
量子电子学报
doi:10.3969/j.issn.1007-5461.2015.03.016
主要研究空间光孤子在非线性克尔介质的线性折射率受到双势垒调制时的传播行为.采用数值模拟的方法,讨论了在两种不同类型对称双势垒的作用下,单孤子和双孤子的空间传播行为.数值模拟结果显示,在双势垒的作用下,单孤子能表现出摆动、遂穿和导向行为,双孤子能表现出导向行为.因此,通过合理设计诸如调制深度、垒间距、单垒的宽度等双势垒参数以及初始中心偏移和入射角度等入射光束参数,可以实现孤子的捕获和控制.
关键词:
非线性光学
,
空间光孤子
,
数值模拟
,
对称双势垒
,
导向
,
遂穿