| L10结构金属间化合物空位形成能 |
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| 引用本文： | 舒小林,陈子瑜,陈强,胡望宇. L10结构金属间化合物空位形成能[J]. 北京航空航天大学学报, 2006, 32(10): 1259-1262 |
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| 作者姓名： | 舒小林 陈子瑜 陈强 胡望宇 |
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| 作者单位： | 北京航空航天大学,理学院,北京,100083;湖南大学,物理系,长沙,410082 |
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| 基金项目： | 国家自然科学基金，北京航空航天大学校科研和教改项目 |
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| 摘 要： | L10结构CoPt和FePt 薄膜因其高磁各向异性而成为新一代超高磁记录密度材料.采用Miedema理论计算了多种L10结构金属间化合物的空位形成能.研究结果表明:在这些金属间化合物中可能形成的空位类型,如FeNi和MnNi合金中易形成Ni空位;FePt和FePd合金中易形成Fe空位;CoPt合金中易形成Co空位;NiPt合金中易形成Ni空位;MnPt合金中易形成Pt空位;MnPd和MnHg合金中易形成Mn空位;MnRh合金中易形成Rh空位.这一研究结果为进一步研究开发高性能的磁性薄膜提供了理论依据.
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| 关 键 词： | 金属间化合物结构 缺陷 磁记录材料 |
| 文章编号： | 1001-5965(2006)10-1259-04 |
| 收稿时间： | 2005-10-11 |
| 修稿时间： | 2005-10-11 |
Vacancy formation energy of intermetallic with L10 structure |
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| Shu Xiaolin,Chen Ziyu,Chen Qiang,Hu Wangyu. Vacancy formation energy of intermetallic with L10 structure[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(10): 1259-1262 |
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| Authors: | Shu Xiaolin Chen Ziyu Chen Qiang Hu Wangyu |
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| Affiliation: | 1. School of Science, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
2. Department of Applied Physics, Hunan University, Changsha 410082, China |
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| Abstract: | Equiatomic CoPt and FePt alloy films with the L10-ordered structure have been attractive as ultrahigh-density magnetic recording media. The vacancy formation energies of some intermetallics with L10-ordered structure were calculated by Miedema′s theory. The types of structural vacancy in the intermetallics were discussed. The Ni vacancy is easy formed in FeNi. The type of structural vacancy in FePt and FePd is the Fe vacancy. The Co vacancy is easy formed in CoPt. The Ni vacancy is easy formed in NiPt. The Pt vacancy is easy formed in MnPt. The type of structural vacancy in MnNi is the Ni vacancy. The Mn vacancy is easy formed in MnPd and MnHg. The Rh vacancy is easy formed in MnRh. This research is provided the reference in researching ultrahigh-density magnetic recording films. |
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| Keywords: | intermetallic compound structure defects magnetic recording materials |
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