Anomalous temperature dependence of coercivity in precipitation hardened Pr-Co-Cu-Ti magnets

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	Anomalous temperature dependence of coercivity in precipitation hardened Pr-Co-Cu-Ti magnets
	Zhang, J ; Liu, H ; Rong, CB ; Zhang, HW ; Zhang, SY ; Shen, BG ; Bai, YQ ; Li, BH
刊名	APPLIED PHYSICS LETTERS
	2003
卷号	83 期号:6 页码:1172
关键词	EARTH-COBALT MAGNETS PERMANENT-MAGNETS INTRINSIC-COERCIVITY REVERSAL MECHANISM FE
ISSN号	0003-6951
通讯作者	Zhang, J: Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, POB 603, Beijing 100080, Peoples R China.
中文摘要	The anomalous temperature dependence of coercicity, H-c(T), has been observed in precipitation hardened PrCo6.7-xCuxTi0.3 (x=0.2-1) magnets. Transmission electron microscopy reveals that they exhibit a cellular microstructure. With an increase of Cu content, the Curie temperature of the 2:17 phase remains nearly unchanged whereas that of the 1:5 phase decreases. The peak of H-c(T) becomes higher, broader and shifts towards low temperature while the room temperature coercivity remains low and does not change with an increase of Cu content. There is a strong correlation between the Curie temperature of the 1:5 phase and the peak of H-c(T). The effect of Cu on H-c(T) cannot be explained by a traditional domain wall pinning model. It is highly likely that their magnetization reversal is controlled by the nucleation of reverse domains in isolated 2:17 cells. (C) 2003 American Institute of Physics.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/33877]
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,Liu, H,Rong, CB,et al. Anomalous temperature dependence of coercivity in precipitation hardened Pr-Co-Cu-Ti magnets[J]. APPLIED PHYSICS LETTERS,2003,83(6):1172.
APA	Zhang, J.,Liu, H.,Rong, CB.,Zhang, HW.,Zhang, SY.,...&Li, BH.(2003).Anomalous temperature dependence of coercivity in precipitation hardened Pr-Co-Cu-Ti magnets.APPLIED PHYSICS LETTERS,83(6),1172.
MLA	Zhang, J,et al."Anomalous temperature dependence of coercivity in precipitation hardened Pr-Co-Cu-Ti magnets".APPLIED PHYSICS LETTERS 83.6(2003):1172.