Magnetic Reversal and Temperature Dependence of Magnetic Properties in Sm-(Co,Cu)/Fe Exchange Spring Multilayer Films

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	Magnetic Reversal and Temperature Dependence of Magnetic Properties in Sm-(Co,Cu)/Fe Exchange Spring Multilayer Films
	Zhang, J ; Song, JZ ; Zhang, Y ; Wang, F ; Chen, BC ; Shen, BG ; Sun, JR
刊名	IEEE TRANSACTIONS ON MAGNETICS
	2011
卷号	47 期号:10 页码:2792
ISSN号	0018-9464
通讯作者	Zhang, J: Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Beijing 100864, Peoples R China.
中文摘要	The magnetization reversal mechanism and temperature dependence of magnetic properties of Cr(50 nm)/[SmCo(6)(9 nm)/Cu(x nm)/Fe(5 nm)/Cu(x nm)](6)/Cr(100 nm)/a-SiO(2) (x = 0-0.75) multilayer films are reported. The initial curves and angular-dependent coercivities measurement indicate that the magnetization reversal mechanism of multilayer films is determined by domain-wall pinning. With lowering the temperature, the coercivities of multilayer films increase largely. By inserting Cu layer between the hard and soft layers can increase the coercivity of the multilayer films, especially at low temperatures. The hysteresis loops of the film with x = 0.75 annealed at 500 degrees C measured from 10 to 400 K show all the single-phase behavior, although the film contains a large amount of soft phase (approximate to 40 vol%), indicating the strong exchange coupling between the hard and soft phase and the extremely large nucleation field in the soft layers. With the decrease of temperature, the maximum energy product (BH)(max) and remanence also increase. A large (BH)(max) of about 37.4 MGOe is obtained at 10 K for the film with x = 0.75 annealed at 500 degrees C. The recoiling curves as well as the irreversible change in magnetization -Delta M(irrev)(H)/2M(r) = [M(r) - M(d)(H)]/2M(r) versus the reverse field demonstrate the increase of the inhomogeneity and pinning in the hard layer at the low temperature as well as after the addition of Cu, therefore, an improved coercivity.
收录类别	SCI
语种	英语
公开日期	2013-09-18
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/41417]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Zhang, J,Song, JZ,Zhang, Y,et al. Magnetic Reversal and Temperature Dependence of Magnetic Properties in Sm-(Co,Cu)/Fe Exchange Spring Multilayer Films[J]. IEEE TRANSACTIONS ON MAGNETICS,2011,47(10):2792.
APA	Zhang, J.,Song, JZ.,Zhang, Y.,Wang, F.,Chen, BC.,...&Sun, JR.(2011).Magnetic Reversal and Temperature Dependence of Magnetic Properties in Sm-(Co,Cu)/Fe Exchange Spring Multilayer Films.IEEE TRANSACTIONS ON MAGNETICS,47(10),2792.
MLA	Zhang, J,et al."Magnetic Reversal and Temperature Dependence of Magnetic Properties in Sm-(Co,Cu)/Fe Exchange Spring Multilayer Films".IEEE TRANSACTIONS ON MAGNETICS 47.10(2011):2792.