Microstructure and magnetic properties of FeRh thin films with Pt doping  

作　　者：LU Wei FAN JunWei YAN Biao 

机构地区：[1]School of Materials Science and Engineering, Shanghai Key Lab of D&A for Metal-Functional Materials, Tongji University, Shanghai 200092, China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2011年第7期1223-1226,共4页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 50901052);the Program for Young Excellent Talents in Tongji University (Grant No. 2009KJ003);the "Chen Guang" Project(Grant No. 10CG21) of the Shanghai Municipal Education Commission and Shanghai Education Development Foundation

摘　　要：In this paper, the structure and magnetic properties of FeRh alloy thin films with a small amount of Pt doping fabricated onto a glass substrate by sputtering are investigated systematically. XRD results show that the diffraction pattern of as-deposited film exhibits only nonmagnetic y phase. After annealing, the disordered γphase transforms to an ordered α＇ phase. The temperature dependence of saturation magnetization of different annealing times and Pt contents are characterized. The phase transition temperature increases as the Pt component is increased, but the saturation magnetization reduces as the Pt component is in- creased. These results may be caused by the growth of the disordered γ phase.In this paper,the structure and magnetic properties of FeRh alloy thin films with a small amount of Pt doping fabricated onto a glass substrate by sputtering are investigated systematically.XRD results show that the diffraction pattern of as-deposited film exhibits only nonmagnetic γ phase.After annealing,the disordered γ phase transforms to an ordered α' phase.The temperature dependence of saturation magnetization of different annealing times and Pt contents are characterized.The phase transition temperature increases as the Pt component is increased,but the saturation magnetization reduces as the Pt component is increased.These results may be caused by the growth of the disordered γ phase.

关 键 词：FeRh thin film magnetic phase transition crystallographic structure. 

分 类 号：TQ153.2[化学工程—电化学工业] O482.5[理学—固体物理]