Composition design and properties of CoNbZr amorphous films deposited by unbalanced magnetron sputtering

作     者：郭光伟 唐光泽 王亚军 马欣新 王玉江 

作者机构：School of Materials Science and EngineeringHarbin Institute of Technology School of Mechanical Science and EngineeringDaqing Petroleum Institute State Key Laboratory of Advanced Welding Production TechnologyHarbin Institute of Technology 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2009年第16卷第5期

页      面：719-724页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project(2007CB607602) supported by the National Basic Research Program of China 

主　　题：CoNbZr amorphous film magnetron co-sputtering isothermal annealing 

摘      要：Co87Nb10Zr3,Co76Nb19Zr5,Co64Nb26Zr10 and Co64Nb16Zr20 amorphous films were deposited on noncrystalline glass substrates by DC unbalanced magnetron sputtering. The compositions of amorphous films were tailored in the light of the individual deposition rate of Co,Nb and Zr. The amorphous films with the anticipated composition were prepared by means of co-sputtering Co,Nb and Zr targets simultaneously. It is indicated that there is interaction among three targets during co-sputtering. The morphology and composition of the films were observed by SEM,AFM and EDS. The structure and magnetic property were measured by XRD and physical property measurement system(PPMS) . The coercivity changes with the composition,varying from 240 to 1 600 A/m. After vacuum isothermal annealing at temperatures of 475,500,525 and 550 ℃ for 15 and 30 min,respectively,it is found that high Nb content is beneficial to improving thermal stability of amorphous films. The crystallized films have the mean grain size of 2-19 nm.