Tunable magnetic transition and reversible magnetocaloric effects at room temperature in transition-metal-oxyfluorides CrO2-xFx

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	Tunable magnetic transition and reversible magnetocaloric effects at room temperature in transition-metal-oxyfluorides CrO2-xFx
	W. J. Ren; B. Li; W. Liang; C. Q. Jin; Z. D. Zhang
	2014
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	596 页码:69-72
摘要	We report the tuning of magnetic transition and associated reversible magnetocaloric effect in CrO2 F-x(x) by manipulating the doping levels. At x = 0.12, the magnetic transition occurs at room temperature, with magnetic-entropy changes of around 4 J kg (1) K (1) and relative cooling power of 388 J kg (1) at magnetic-field changes from 0 to 50 kOe. The reversibility is verified by negligible thermal and magnetic hysteresis, as well as the positive slope at Arrott plots. The complete phase diagram for electronic and magnetic states is drawn for CrO2 xFx. This work indicates CrO1.88F0.12 is a promising candidate for room temperature magnetic refrigeration because of the nature of second-order transition and abundance of elements involved. (C) 2014 Elsevier B. V. All rights reserved.
部门归属	[ren, weijun ; li, bing ; zhang, zhidong] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [liang, wen ; jin, changqing] chinese acad sci, beijing natl lab condensed matter phys, beijing 100190, peoples r china. [liang, wen ; jin, changqing] chinese acad sci, inst phys, beijing 100190, peoples r china. ; ren, wj (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; wjren@imr.ac.cn
关键词	Cro2 Magnetocaloric Effect Relative Cooling Power High-pressure Synthesis Refrigeration Ferromagnetism Pressure Oxide
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72570
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. J. Ren,B. Li,W. Liang,et al. Tunable magnetic transition and reversible magnetocaloric effects at room temperature in transition-metal-oxyfluorides CrO2-xFx[J]. Journal of Alloys and Compounds,2014,596:69-72.
APA	W. J. Ren,B. Li,W. Liang,C. Q. Jin,&Z. D. Zhang.(2014).Tunable magnetic transition and reversible magnetocaloric effects at room temperature in transition-metal-oxyfluorides CrO2-xFx.Journal of Alloys and Compounds,596,69-72.
MLA	W. J. Ren,et al."Tunable magnetic transition and reversible magnetocaloric effects at room temperature in transition-metal-oxyfluorides CrO2-xFx".Journal of Alloys and Compounds 596(2014):69-72.