Interstitial-nitrogen effect on phase transition and magnetocaloric effect in Mn(As,Si) (invited)

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	Interstitial-nitrogen effect on phase transition and magnetocaloric effect in Mn(As,Si) (invited)
	W. B. Cui; X. K. Lv; F. Yang; Y. Yu; R. Skomski; X. G. Zhao; W. Liu; Z. D. Zhang
	2010
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	107 期号:9
摘要	The effect of interstitial nitrogen on the phase transition and magnetocaloric behavior of MnAs(1-x)Si(x)N(delta) (x=0.03, 0.06, and 0.09) is investigated. The interstitial nitrogen atoms cause the step-scanned x-ray diffraction peaks to shift toward lower angles and lower the Curie temperature, whereas silicon addition increases the Curie temperature to near room temperature. The thermal hysteresis is reduced to nearly 0 in MnAs(1-x)Si(x)N(delta), which is beneficial to practical applications. For a field change of 5 T, the largest magnetic entropy change and refrigerant capacity are 14.6 J kg(-1) K(-1) at 247 K and 360 J kg(-1), which is slightly higher than the entropy change in the parent alloy. Finally, we briefly discuss the occurrence and origin of the "virgin effect" in MnAs. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3358617]
部门归属	[cui, w. b.; lv, x. k.; yang, f.; zhao, x. g.; liu, w.; zhang, z. d.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [cui, w. b.; lv, x. k.; yang, f.; zhao, x. g.; liu, w.; zhang, z. d.] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. [yu, y.; skomski, r.; liu, w.] univ nebraska, dept phys & astron, lincoln, ne 68588 usa. [yu, y.; skomski, r.; liu, w.] univ nebraska, nebraska ctr mat & nanosci, lincoln, ne 68588 usa.;cui, wb (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;wliu@imr.ac.cn
关键词	Adiabatic Temperature-change Magnetic Refrigeration Gd5si2ge2
URL	查看原文
WOS记录号	WOS:000277834300143
引用统计	被引频次：48[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/321006/31057
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. B. Cui,X. K. Lv,F. Yang,et al. Interstitial-nitrogen effect on phase transition and magnetocaloric effect in Mn(As,Si) (invited)[J]. Journal of Applied Physics,2010,107(9).
APA	W. B. Cui.,X. K. Lv.,F. Yang.,Y. Yu.,R. Skomski.,...&Z. D. Zhang.(2010).Interstitial-nitrogen effect on phase transition and magnetocaloric effect in Mn(As,Si) (invited).Journal of Applied Physics,107(9).
MLA	W. B. Cui,et al."Interstitial-nitrogen effect on phase transition and magnetocaloric effect in Mn(As,Si) (invited)".Journal of Applied Physics 107.9(2010).