Magnetic and reversible magnetocaloric properties of (Gd(1-x)Dy(x))(4)Co(3) ferrimagnets

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	Magnetic and reversible magnetocaloric properties of (Gd(1-x)Dy(x))(4)Co(3) ferrimagnets
	Q. Zhang; B. Li; X. G. Zhao; Z. D. Zhang
	2009
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	105 期号:5
摘要	Magnetic properties and magnetocaloric effect of the ferrimagnetic compounds Gd(4)Co(3) and (Gd(0.9)Dy(0.1))(4)Co(3) have been studied. In Gd(4)Co(3), two successive magnetic-entropy changes occur due to a spin-reorientation transition at T(SR)=163 K and a ferrimagnetic-magnetic ordering transition at T(C)=220 K. For a field change from 0 to 5 T, -Delta S(M)(max) at T(C) is 5.74 J/kg K, the full width at half maximum (delta T(FWHM)) of the -Delta S(M) versus T curve has a high value of 131 K, and the refrigerant capacity is as high as 575 J/kg. T(C) can easily be tuned by Dy substitution for Gd and the magnetic-entropy change is increased simultaneously. -Delta S(M)(max) of (Gd(0.9)Dy(0.1))(4)Co(3) at T(C)=145 K for the same field change has increased to 8.47 J/kg K. Our studies suggest that the successive magnetic transitions could enlarge the temperature interval, which makes this type of material meaningful for magnetic refrigeration in wider temperature regions than conventional materials.
部门归属	[zhang, q.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;zhang, q (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;qzhangemail@gmail.com
关键词	Cobalt Alloys Dysprosium Alloys Entropy Ferrimagnetic Materials Gadolinium Alloys Magnetic Cooling Magnetic Structure Magnetic Transition Temperature Giant Magnetoresistance Entropy Change Transition Refrigeration Temperature Compound System
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32558
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Q. Zhang,B. Li,X. G. Zhao,et al. Magnetic and reversible magnetocaloric properties of (Gd(1-x)Dy(x))(4)Co(3) ferrimagnets[J]. Journal of Applied Physics,2009,105(5).
APA	Q. Zhang,B. Li,X. G. Zhao,&Z. D. Zhang.(2009).Magnetic and reversible magnetocaloric properties of (Gd(1-x)Dy(x))(4)Co(3) ferrimagnets.Journal of Applied Physics,105(5).
MLA	Q. Zhang,et al."Magnetic and reversible magnetocaloric properties of (Gd(1-x)Dy(x))(4)Co(3) ferrimagnets".Journal of Applied Physics 105.5(2009).