L1<sub>0</sub>结构金属间化合物空位形成能

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

1.
北京航空航天大学理学院, 北京 100083
2. 湖南大学物理系, 长沙 410082

基金项目: 国家自然科学基金资助项目(50541036,50201002); 北京航空航天大学理学院基金资助项目

详细信息

作者简介:
舒小林(1964-),男,湖南长沙人,副教授,shuxlin@buaa.edu.cn.

中图分类号: TG 111.2
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- 被引次数: 0
出版历程
- 收稿日期: 2005-10-11
- 网络出版日期: 2006-10-31

Vacancy formation energy of intermetallic with L1₀ structure

1.
School of Science, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2. Department of Applied Physics, Hunan University, Changsha 410082, China

摘要

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.
- 金属间化合物结构 /
- 缺陷 /
- 磁记录材料
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.
- intermetallic compound structure /
- defects /
- magnetic recording materials

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参考文献(1)

[1] Suzuki T, Harada K, Honda N, et al. Preparation of ordered Fe-Pt thin films for perpendicular magnetic recording media[J]. J Magn Magn Mater,1999,193:85-88 [2] Kuo C M, Kuo P C, Wu H C, et al. Magnetic hardening mechanism study in FePt thin films[J]. J Appl Phys,1999,85:4886-4888 [3] Visokay M R, Sinclair R. Direct formation of ordered CoPt and FePt compound thin films by sputtering[J]. Appl Phys Lett,1995,66:1692-1694 [4] Kitakami O, Shimada Y, Oikawa K, et al . Low-temperature ordering of L10-CoPt thin films promoted by Sn, Pb, Sb, and Bi additives[J]. Appl Phys Lett,2001,78:1104-1106 [5] Nishimura K, Takahashi K, Uchida H, et al. Effects of third elements (Ag,B,Cu,Ir) addition and high Ar gas pressure on L1₀ FePt films[J]. J Magn Magn Mater, 2004, 272-276:2189-2190 [6] Lee S R, Yang S, Kim Y K, et al. Rapid ordering of Zr-doped FePt alloy films[J]. Appl Phys Lett,2001,78(25):4001-4003 [7] Wang H Y, Mao W H, Ma X K,et al. Improvement in hard magnetic properties of FePt films by N addition[J]. J Appl Phys,2004,95(5):2564-2568 [8] Maeda T, Kai T, Kikitsu A, et al. Reduction of ordering temperature of an FePt-ordered alloy by addition of Cu[J]. Appl Phys Lett,2002,12(80):2147-2149 [9] Lai C H , Yang C H , Chiang C C. Ion-irradiation- induced direct ordering of L1₀ FePt phase [J]. Appl Phys Lett,2003,83(22):4550-4552 [10] de Boer F R, Boom B, Mattens W C M, et al. Cohesion in metals . Amsterdam:North-Holland Physics Publishing, 1988. [11] Pearson W B. Handbook of lattice spacings and structure of metals and alloys[M]. Ⅱ. Oxford:Pergamin Press, 1967

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