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《Electronic Components and Materials》 2010-01
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Effect of magnetic field annealing on the magnetic properties of FePt/Ag thin films

ZHAO Shuhua,LIU Mei,WANG Yonghong,ZHANG Yumei,LI Haibo(Institute of Condensed Matter Physics and Materials Science,Jilin Normal University,Siping 136000,Jilin Province,China)  
FePt/Ag thin films were obtained by magnetron sputtering,and as-depostied films were annealed in vacuum magnetic annealing furnace at 500 ℃ with and without magnetic field.The structure and magnetic properties of the thin films were investigated with X-ray diffraction(XRD) and vibrating sample magnetometer(VSM).Results show that L10-FePt thin film with coercive force value of 0.763 4 MA.m–1 and mean grain size of 21 nm is obtained after annealing at 500 ℃ without magnetic field.Magnetic filed of 0.8 MA.m–1 provides driving force for nucleation growth of FePt,so the mean grain size of FePt increases to 26 nm,and the coercive force value increases to 0.804 3 MA.m–1 after magnetic field annealing.While the doping of Ag suppresses effectively aggregation and growth of magnetic FePt grain.
【Fund】: 教育部科技研究重点资助项目(No.208178);; 吉林省教育厅资助项目(No.2006—72)
【CateGory Index】: O484.43
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