Structure, properties, and thermal stability of nanocrystallite Fe-Ti-N soft magnetic films

doi:10.1109/TMAG.2003.817082

	Structure, properties, and thermal stability of nanocrystallite Fe-Ti-N soft magnetic films
	Li, D ; Gu, YS ; Chang, XR ; Li, FS ; Qiao, LJ ; Tian, ZZ ; Fang, GD ; Song, QS
	2003-11-01
发表期刊	IEEE TRANSACTIONS ON MAGNETICS
ISSN	0018-9464
卷号	39 期号:6 页码:3554-3558
摘要	We deposited Fe-Ti-N magnetic films with a high sputtering power of 7 W/cm(2). When the composition of the films was in the range of Fe-Ti(3.9 at.%)-N(8.8 at.%) to Fe-Ti(3.3 at.%)-N(13.5 at.%), the films were composed of alpha' and Ti2N precipitates. With the addition of nitrogen, 4piM. became higher than that of pure iron, reaching a maximum of 23.8 kG. At the same time, H-c was reduced to a minimum of 1.12 Oe. The best films can meet the needs of the recording head in dual-element giant magnetoresistive/inductive heads, yielding high storage density (10 Gb/in(2)). The incorporation of N in alpha-Fe brought about the a' phase with its higher saturation magnetization. Ti additions inhibited the equilibrium decomposition alpha' --> alpha + gamma'. Because H-C(D) D-6, where D is average grain diameter, grain size control is very important. The nitrogen induces severe distortion of the a' lattice, which can cause the grains to break into pieces and reduce the grain size. High sputtering power also led to the formation of fine grains, with diameter in the order of 14 nm. Probably Ti2N is preferentially precipitated on the grain boundary, pinning the grain boundary and stabilizing the grain size during high-temperature heat treatment. The temperature limit for stability of the structure and its associated low coercivity was not less than 520 degreesC.
关键词	crystal structure Fe-Ti-N film magnetic properties thermal stability
DOI	10.1109/TMAG.2003.817082
收录类别	SCI
语种	英语
WOS研究方向	Engineering ; Physics
WOS类目	Engineering, Electrical & Electronic ; Physics, Applied
WOS记录号	WOS:000187434200017
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/13722
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Li, D
作者单位	1.Univ Sci & Technol Beijing, Dept Mat Phys, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Comp Technol Inst, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Li, D,Gu, YS,Chang, XR,et al. Structure, properties, and thermal stability of nanocrystallite Fe-Ti-N soft magnetic films[J]. IEEE TRANSACTIONS ON MAGNETICS,2003,39(6):3554-3558.
APA	Li, D.,Gu, YS.,Chang, XR.,Li, FS.,Qiao, LJ.,...&Song, QS.(2003).Structure, properties, and thermal stability of nanocrystallite Fe-Ti-N soft magnetic films.IEEE TRANSACTIONS ON MAGNETICS,39(6),3554-3558.
MLA	Li, D,et al."Structure, properties, and thermal stability of nanocrystallite Fe-Ti-N soft magnetic films".IEEE TRANSACTIONS ON MAGNETICS 39.6(2003):3554-3558.