The structure, properties and thermal stability of the nanocrystalline Fe-Ti-N soft magnetic films

	The structure, properties and thermal stability of the nanocrystalline Fe-Ti-N soft magnetic films
	Li, D ; Gu, YS ; Chang, XR ; Li, FS ; Qiao, LJ ; Tian, ZZ ; Fang, GD ; Song, QS
	2003-02-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	39 期号:2 页码:204-208
摘要	Fe-Ti-N magnetic films were deposited with high sputtering power of 900 W. When the composition (atomic fraction, %) of the film is in the range between Fe-39Ti-8.8N and Fe-3.3Ti-13.5N, the film is composed of alpha' and Ti2N precipitates, the 4piM(s), is higher than that of pure iron, reaches a maximum of 2.38 T and the H-c is reduced to a minimum of 89 A/m. The film could meet the needs of the recording head in the dual-element GMR/inductive heads for 1.55 Gb/cm(2) high storage density. The incorporation of N in alpha-Fe brings about the high saturation magnetization of the alpha'phase. The Ti addition inhibites the equilibrium decomposition of alpha' --> alpha+gamma' and stabilizes the strong ferromagnetic phase alpha'. Because H-c(D) proportional to D-6, the grain size control is very important. The nitrogen induces severe distortion of the a' lattice, which could break the grain to pieces and reduce the grain size. High sputtering power also leads to the formation of fine grain of about 14 mn. Ti2N preferentially precipitated at the grain boundary could pin the grain boundary and prevent the grain growth. The stable temperature of the structure and coercivity is not less than 520 degreesC.
关键词	Fe-Ti-N nano-soft magnetic film magnetic field-heating treatment high saturation magnetigation
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000181652500020
出版者	SCIENCE CHINA PRESS
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/13767
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Tian, ZZ
作者单位	1.Beijing Univ Sci & Technol, Dept Mat Phys, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Comp Technol, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Li, D,Gu, YS,Chang, XR,et al. The structure, properties and thermal stability of the nanocrystalline Fe-Ti-N soft magnetic films[J]. ACTA METALLURGICA SINICA,2003,39(2):204-208.
APA	Li, D.,Gu, YS.,Chang, XR.,Li, FS.,Qiao, LJ.,...&Song, QS.(2003).The structure, properties and thermal stability of the nanocrystalline Fe-Ti-N soft magnetic films.ACTA METALLURGICA SINICA,39(2),204-208.
MLA	Li, D,et al."The structure, properties and thermal stability of the nanocrystalline Fe-Ti-N soft magnetic films".ACTA METALLURGICA SINICA 39.2(2003):204-208.