| 磁场退火对FePt/Ag薄膜磁性能的影响 |
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| 引用本文： | 赵书华,刘梅,王永红,张玉梅,李海波.磁场退火对FePt/Ag薄膜磁性能的影响[J].电子元件与材料,2010,29(1). |
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| 作者姓名： | 赵书华 刘梅 王永红 张玉梅 李海波 |
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| 作者单位： | 吉林师范大学,凝聚态物理与材料科学研究所,吉林,四平,136000 |
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| 基金项目： | 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) |
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| 摘 要： | 采用磁控溅射法室温沉积获得FePt/Ag薄膜,然后在500℃下,于真空磁退火炉中对薄膜进行退火处理。利用XRD和振动样品磁强计(VSM),研究了磁场退火对薄膜结构和磁性能的影响。结果表明,500℃零磁场退火获得了矫顽力为0.763 4 MA.m–1、平均晶粒尺寸21 nm的L10-FePt薄膜。磁场提供了FePt成核生长的驱动力,0.8 MA.m–1磁场退火后FePt的平均晶粒尺寸为26 nm,矫顽力增大至0.804 3 MA.m–1。非磁性Ag的掺杂可有效抑制磁性FePt晶粒的团聚生长。
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| 关 键 词： | 磁控溅射 FePt 磁场退火 磁性能 |
Effect of magnetic field annealing on the magnetic properties of FePt/Ag thin films |
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| ZHAO Shuhua,LIU Mei,WANG Yonghong,ZHANG Yumei,LI Haibo.Effect of magnetic field annealing on the magnetic properties of FePt/Ag thin films[J].Electronic Components & Materials,2010,29(1). |
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| Authors: | ZHAO Shuhua LIU Mei WANG Yonghong ZHANG Yumei LI Haibo |
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| Affiliation: | Institute of Condensed Matter Physics and Materials Science;Jilin Normal University;Siping 136000;Jilin Province;China |
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| Abstract: | 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. |
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| Keywords: | magnetron sputtering FePt magnetic field annealing magnetic property |
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