Positive temperature coefficients of remanence and coercivity in precipitation-hardened Gd-Co-Fe-Cu-Zr alloys

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	Positive temperature coefficients of remanence and coercivity in precipitation-hardened Gd-Co-Fe-Cu-Zr alloys
	Rong, CB ; Zhang, J ; Zhang, HW ; Du, XB ; Zhang, SY ; Shen, BG
刊名	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
	2004
卷号	279 期号:2-3 页码:143
关键词	EARTH-COBALT MAGNETS PERMANENT-MAGNETS INTRINSIC-COERCIVITY REVERSAL MECHANISM DEPENDENCE MICROSTRUCTURE SUBSTITUTION
ISSN号	0304-8853
通讯作者	Rong, CB (reprint author), Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, POB 603, Beijing 100080, Peoples R China.
中文摘要	The high-temperature magnetic properties of precipitation-hardened GdxCo(89.5-x-y)Fe(8)Cu(y)Zr(2.5) (x - 11.5-13.5 and y = 7-17) alloys have been studied systematically. X-ray diffraction and transmission electron microscopy reveal that a cellular microstructure consisting of 2:17 cells surrounded by 1:5 cell boundaries is obtained after precipitation hardening. Thermomagnetic analysis further confirms the two-phase character and indicates that Cu mainly goes into the 1:5 phase. All samples exhibit a positive temperature coefficient of remanence alpha (= dM(r)/dT) from room temperature to about 600-700 K, while positive temperature coefficient of coercivity beta (= dH(c)/dT) is only observed in the alloys with low Cu content. It is found that the coercivity mechanism of the precipitation-hardened alloys varies with temperature and Cu content. (C) 2004 Elsevier B.V. All rights reserved.
收录类别	SCI
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/51165]
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	Rong, CB,Zhang, J,Zhang, HW,et al. Positive temperature coefficients of remanence and coercivity in precipitation-hardened Gd-Co-Fe-Cu-Zr alloys[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2004,279(2-3):143.
APA	Rong, CB,Zhang, J,Zhang, HW,Du, XB,Zhang, SY,&Shen, BG.(2004).Positive temperature coefficients of remanence and coercivity in precipitation-hardened Gd-Co-Fe-Cu-Zr alloys.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,279(2-3),143.
MLA	Rong, CB,et al."Positive temperature coefficients of remanence and coercivity in precipitation-hardened Gd-Co-Fe-Cu-Zr alloys".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 279.2-3(2004):143.