中国物理B ›› 2005, Vol. 14 ›› Issue (6): 1238-1242.doi: 10.1088/1009-1963/14/6/031

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Evolution of structure and magnetic properties of nanocrystalline FeXN thin films via Ta and Al addition

A.S.Kamzin1, 伍国光2, 吴东平2, 郑阔海2, 魏福林2, 杨正2   

  1. (1)Ioffe Physico-Technical Institute, Academy of Russian St-Petersburg, Russian; (2)Research Institute of Magnetic Materials, Lanzhou University, Lanzhou 730000,China
  • 收稿日期:2004-07-23 修回日期:2005-01-21 出版日期:2005-05-27 发布日期:2005-05-27
  • 基金资助:
    Project supported by the National Natural Science Foundation of China ( Project No. 60371016) and Russian Foundation of Basic Research(Project No. 02-02-39006).

Evolution of structure and magnetic properties of nanocrystalline FeXN thin films via Ta and Al addition

Wu Guo-Guang (伍国光)a, Wu Dong-Ping (吴东平)a, Zheng Kuo-Hai (郑阔海)a, Wei Fu-Lin (魏福林)a, Yang Zheng (杨正)a, Kamzin A. S.b    

  1. a Research Institute of Magnetic Materials, Lanzhou University, Lanzhou 730000,China; b Ioffe Physico-Technical Institute, Academy of Russian St-Petersburg, Russian
  • Received:2004-07-23 Revised:2005-01-21 Online:2005-05-27 Published:2005-05-27
  • Supported by:
    Project supported by the National Natural Science Foundation of China ( Project No. 60371016) and Russian Foundation of Basic Research(Project No. 02-02-39006).

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摘要： Nanocrystalline FeAlN and FeTaN films are prepared by direct growth and crystallization of their as-deposited amorphous films, respectively. Although both films show soft magnetism of nanocrys-talline, the uniaxial anisotropy is to be observed different. Measurements of microstructure reveal that Ta addition leads to higher N-solubility in these films, and results in larger lattice dilation and more compressive stress. The uniaxial anisotropy is the consequence of the anisotropic distribution of inter-stitial N atoms in anα-Fe lattice. Al is easy to react with nitrogen, therefore, the α-Fe is purer in an FeAlN films than in an FeTaN ˉlm and the stress is tensile in FeAlN film. The difference of anisotropy may be attributed to the difference between the microstructures in both films.

关键词: Fe-X-N thin film, soft magnetic properties, uniaxial anisotropy, nanocrystalline

Abstract: Nanocrystalline FeAlN and FeTaN films are prepared by direct growth and crystallization of their as-deposited amorphous films, respectively. Although both films show soft magnetism of nanocrys-talline, the uniaxial anisotropy is to be observed different. Measurements of microstructure reveal that Ta addition leads to higher N-solubility in these films, and results in larger lattice dilation and more compressive stress. The uniaxial anisotropy is the consequence of the anisotropic distribution of inter-stitial N atoms in anα-Fe lattice. Al is easy to react with nitrogen, therefore, the α-Fe is purer in an FeAlN films than in an FeTaN ˉlm and the stress is tensile in FeAlN film. The difference of anisotropy may be attributed to the difference between the microstructures in both films.

Key words: Fe-X-N thin film, soft magnetic properties, uniaxial anisotropy, nanocrystalline

中图分类号:  (Fine-particle systems; nanocrystalline materials)

  • 75.50.Tt
75.50.Dd (Nonmetallic ferromagnetic materials) 75.50.Kj (Amorphous and quasicrystalline magnetic materials) 75.70.Ak (Magnetic properties of monolayers and thin films) 75.30.Gw (Magnetic anisotropy)