| Structure and Magnetic Propoerty of Amorphous Fe—Ni Particles prepared by Mechanical Alloying |
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| 引用本文： | XUShi－yue HEZheng－ming 等. Structure and Magnetic Propoerty of Amorphous Fe—Ni Particles prepared by Mechanical Alloying[J]. 上海大学学报(英文版), 2001, 5(2): 147-150. DOI: 10.1007/s11741-001-0012-x |
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| 作者姓名： | XUShi－yue HEZheng－ming 等 |
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| 作者单位： | DepartmentofPhysics,CollegeofSciences,ShanghaiUniversity,Shanghai200436,China |
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| 基金项目： | theScienceFoundationofShanghaiMunicipalCommissionofEducation! (80 796 5 ) |
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| 摘 要： | The amorphous Fe67.5 alloy particles have been prepared by mechanical alloying(MA) process of elemental powders.The crystallization is observed at temperature around 405℃ by means of differential thermal analyzer,It is found that the coercivity Hc and the effective magnetic anisotropy value of amorphous phase are not far from that of crystal phase.The magnetization behavior of amorphous and nanocrystalline samples prepared by mechanical alloying and milling process are quite similar,they obey 1/H law at middle-high field and 1/H^2 at higher field.The 1/H field dependence is attributed to a large number of dislocations created during MA process.The studies on the 1/H^2 field dependence reveals that magnetization of Fe-Ni ultrafine particles are governed predominantly by internal stress fields induced by MA process.
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| 关 键 词： | Fe－Ni合金 结构 磁性能 纳米结晶 |
| 收稿时间： | 2000-09-26 |
Structure and magnetic property of amorphous Fe-Ni particles prepared by mechanical alloying |
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| Shi-yue Xu,Zheng-ming He,Zhong-cheng Wang,Zheng-ming Zhang,Jian-hua Zhang,Min-jian Zhong. Structure and magnetic property of amorphous Fe-Ni particles prepared by mechanical alloying[J]. Journal of Shanghai University(English Edition), 2001, 5(2): 147-150. DOI: 10.1007/s11741-001-0012-x |
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| Authors: | Shi-yue Xu Zheng-ming He Zhong-cheng Wang Zheng-ming Zhang Jian-hua Zhang Min-jian Zhong |
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| Affiliation: | Department of Physics, College of Sciences, Shanghai University, |
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| Abstract: | The amorphous Fe67.5Ni32.5 alloy particles have been prepared by mechanical alloying (MA) process of elemental powders. The crystallization is observed at temperature around 405°C by means of differential thermal analyzer. It is found that the coercivity H c and the effective magnetic anisotropy value of amorphous phase are not far from that of crystal phase. The magnetization behavior of amorphous and nanocrystalline samples prepared by mechanical alloying and milling process are quite similar, they obey 1/H law at middle-high field and 1/H 2 at higher field. The /H field dependence is attributed to a large number of dislocations created during MA process. The studies on the 1/H 2 field dependence reveals that magnetization of Fe-Ni ultrafine particles are governed predominantly by internal stress fields induced by MA process. Supported by the Science Foundation of Shanghai Municipal Commission of Education (807965) |
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| Keywords: | mechanical alloying amorphous ultrafine particles defect structure |
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