北京航空航天大学学报 ›› 2006, Vol. 32 ›› Issue (10): 1259-1262.

• 论文 • 上一篇    

L10结构金属间化合物空位形成能

舒小林1, 陈子瑜1, 陈强1, 胡望宇2   

  1. 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
  • 收稿日期:2005-10-11 出版日期:2006-10-31 发布日期:2010-09-19
  • 作者简介:舒小林(1964-),男,湖南长沙人,副教授,shuxlin@buaa.edu.cn.
  • 基金资助:

    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

Vacancy formation energy of intermetallic with L10 structure

Shu Xiaolin1, Chen Ziyu1, Chen Qiang1, Hu Wangyu2   

  1. 1. School of Science, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
    2. Department of Applied Physics, Hunan University, Changsha 410082, China
  • Received:2005-10-11 Online:2006-10-31 Published:2010-09-19

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.

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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