| 纳米金属Ni的饱和磁化强度和居里温度的尺寸依赖效应 |
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| 引用本文： | 李平云,操振华,陆海鸣,孟祥康. 纳米金属Ni的饱和磁化强度和居里温度的尺寸依赖效应[J]. 南京大学学报(自然科学版), 2009, 45(2) |
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| 作者姓名： | 李平云 操振华 陆海鸣 孟祥康 |
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| 作者单位： | 南京大学材料科学与工程系,南京 210093 |
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| 基金项目： | 国家重点基础研究计划项目(2004CB619305) |
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| 摘 要： | 目前,纳米铁磁材料的磁学性质得到了广泛的关注.利用振动样品磁强计测试了纳米金属Ni的饱和磁化强度和居里温度.结果表明,纳米金属Ni的饱和磁化强度和居里温度低于粗晶Ni的饱和磁化强度和居里温度.而且,纳米金属Ni的饱和磁化强度和居里温度都具有尺寸依赖特性.采用一理论模型解释了饱和磁化强度和居里温度的尺寸依赖特性.
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| 关 键 词： | 纳米 饱和磁化强度 居里温度 |
Size-dependent saturation magnetization and Curie temperature of nanocrystalline nickel |
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| Li Ping-Yun,Cao Zhen-Hua,Lu Hai-Ming,Meng Xiang-Kang. Size-dependent saturation magnetization and Curie temperature of nanocrystalline nickel[J]. Journal of Nanjing University: Nat Sci Ed, 2009, 45(2) |
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| Authors: | Li Ping-Yun Cao Zhen-Hua Lu Hai-Ming Meng Xiang-Kang |
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| Affiliation: | Department of Materials Science and Engineering;Nanjing University;Nanjing 210093;China |
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| Abstract: | The saturation magnetization and Curie temperature of nanocrystalline nickel are measured by vibrating sample magnetometer.The results indicate that the saturation magnetization and Curie temperature of nanocrystalline nickel are lower than their coarse-grained counterpart.Moreover,the saturation magnetization and Curie temperature of nanocrystalline nickel are size dependent,which can be explained via a theoretical model. |
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| Keywords: | nanocrystalline saturation magnetization Curie temperature |
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