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	Study on the structure of spin valve for GMR sensor with low coercivity
	Liu Peng ; Li Wei ; Liu Hua-rui ; Ye Shuang-li ; Ren Tian-ling ; Liu Li-tian
	2010-05-07 ; 2010-05-07
关键词	Practical/ cobalt alloys coercive force copper alloys giant magnetoresistance iridium alloys iron alloys manganese alloys spin valves sputter deposition tantalum alloys/ spin valve GMR sensor low coercivity glass substrate high vacuum DC magnetron sputtering synthetic free layers high magnetoresistance ratio transverse annealing procedure Ta-Cu-CoFe-IrMn-Ta NiFe-CoFe NiFeCr-CoFe/ A7570C Interfacial magnetic properties A7570P Enhanced magnetoresistance in magnetic films and multilayers A7215G Galvanomagnetic and other magnetotransport effects (metals/alloys) A7550V High coercivity magnetic materials A8115C Deposition by sputtering B3110M Magnetic multilayers B0520B Sputter deposition/ Ta-Cu-CoFe-IrMn-Ta/int CoFe/int IrMn/int Co/int Cu/int Fe/int Ir/int Mn/int Ta/int CoFe/bin IrMn/bin Co/bin Fe/bin Ir/bin Mn/bin Cu/el Ta/el NiFeCoFe/ss Co/ss Fe/ss Ni/ss NiFeCrCoFe/ss Co/ss Cr/ss Fe/ss Ni/ss
中文摘要	IrMn top spin valves, with the structure of Ta/free layer/Cu/CoFe/IrMn/Ta were deposited on glass substrate by high vacuum DC magnetron sputtering. The coercivity of the spin valves was investigated when NiFe/CoFe and NiFeCr/CoFe were selected as synthetic free layers, respectively. In order to obtain spin valves with low coercivity and high magnetoresistance ratio (MR), NiFeCr/NiFe/CoFe was used as synthetic free layer. The spin valve with NiFeCr/NiFe/CoFe structure had a MR of 10.08% and the coercivity was 4.87 * (10/sup 3//4 pi )A/m. By a transverse annealing procedure with a weak applied external magnetic field, the coercivity could be reduced to less than 0.01 * (10/sup 3//4 pi )A/m. With these improvements, GMR sensors with high MR and low coercivity could be achieved.
语种	中文 ; 中文
出版者	Southeast Univ ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/16684]
专题	清华大学
推荐引用方式 GB/T 7714	Liu Peng,Li Wei,Liu Hua-rui,et al. Study on the structure of spin valve for GMR sensor with low coercivity[J],2010, 2010.
APA	Liu Peng,Li Wei,Liu Hua-rui,Ye Shuang-li,Ren Tian-ling,&Liu Li-tian.(2010).Study on the structure of spin valve for GMR sensor with low coercivity..
MLA	Liu Peng,et al."Study on the structure of spin valve for GMR sensor with low coercivity".(2010).

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