Influence of phase transformation on the permanent-magnetic properties of Fe-Pt based alloys

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	Influence of phase transformation on the permanent-magnetic properties of Fe-Pt based alloys
	E. Bruck; Q. F. Xiao; P. D. Thang; M. J. Toonen; F. R. de Boer; K. H. J. Buschow
	2001
发表期刊	Physica B-Condensed Matter
ISSN	0921-4526
卷号	300 期号:1-4 页码:215-229
摘要	We have studied the effect of the atomic disorder-order transformation on remanence enhancement and coercivity in Fe-Pt-based materials by isothermal annealing at temperatures well below the transformation point. We also investigated the effect of the annealing temperature and the effect of various types of additives. The relative amount of the low-temperature hard-magnetic face-centered-tetragonal (FCT) phase precipitated in the high-temperature magnetically soft face-centered-cubic (FCC) phase was determined by means of X-ray diffraction. As a function of annealing time and annealing temperature, particle size and relative amount of the FCT phase increased at the cost of the FCC phase. These changes were followed by means of magnetic measurements. We observed a continuous increase in coercivity with increasing annealing time, eventually reaching a maximum. The Kneller-Hawig model was used to explain the occurrence of remanence enhancement and the continuously changing degree of exchange coupling between the magnetically soft and hard phase. The suitability of Fe-Pt based alloys in dental applications is discussed. (C) 2001 Elsevier Science B.V. All rights reserved.
部门归属	univ amsterdam, van der waals zeeman inst, nl-1018 xe amsterdam, netherlands. chinese acad sci, inst met res, shenyang 110015, peoples r china. int training inst mat sci, hanoi, vietnam.;bruck, e (reprint author), univ amsterdam, van der waals zeeman inst, valckenierstr 65, nl-1018 xe amsterdam, netherlands
关键词	Fe-pt Alloys Remanence Enhancement Exchange Coupling
URL	查看原文
WOS记录号	WOS:000170850000016
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36596
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	E. Bruck,Q. F. Xiao,P. D. Thang,et al. Influence of phase transformation on the permanent-magnetic properties of Fe-Pt based alloys[J]. Physica B-Condensed Matter,2001,300(1-4):215-229.
APA	E. Bruck,Q. F. Xiao,P. D. Thang,M. J. Toonen,F. R. de Boer,&K. H. J. Buschow.(2001).Influence of phase transformation on the permanent-magnetic properties of Fe-Pt based alloys.Physica B-Condensed Matter,300(1-4),215-229.
MLA	E. Bruck,et al."Influence of phase transformation on the permanent-magnetic properties of Fe-Pt based alloys".Physica B-Condensed Matter 300.1-4(2001):215-229.