纳米相铁磁多层膜特性分析  

Study on Nanophase Magnetic Multi-films

作　　者：刘存业[1] 李建[1] 陈志谦[1] 陈建勇[1] 徐庆宇[2] 倪刚[2] 

机构地区：[1]西南师范大学物理系 [2]南京大学固体微结构国家开放实验室,江苏南京210093

出　　处：《西南师范大学学报（自然科学版）》2002年第2期166-169,共4页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：国家 973项目基金资助项目 (G19990 6 45 0 8);重庆市应用基础项目资助

摘　　要：用高真空多靶离子束溅射沉积技术制备Fe/Al2 O3 /Fe隧道结样品 ,观测和分析了“三明治”结构的双Hc磁滞特性 .通过样品的VUsing ion-beam-sputtering technique with plasma oxidization to create an isolating layer of Al-2O-3, we have fabricated some Fe/Al-2O-3/Fe magnetic tunnel junctions(MTJ) samples. The base pressure of the vacuum chamber equipped with a Kauffman gun was 8.0×10 -5 Pa, and the argon (99.99%) pressure was 2.0×10 -2 Pa when sputtering. The hysteretic curve and V-I character of the junction samples were studied, the double Hc hysteretic loop and a nonlinear V-I curve were observed, which demonstrated that the conductance of the tunneling junctions originates from the spin polarized tunneling effect. Under zero magnetic field the junction resistance changes with the increase of applied junction voltage bias were studird.

关 键 词：纳米相 铁磁多层膜 磁性隧道结 溅射 纳米磁体 

分 类 号：O484.43[理学—固体物理]