Magnetism and magnetocaloric properties of Mn0.95Cr0.05As

被引：7

作者：

Sun, N. K. ^{[1
]}

Xu, S. N. ^{[1
]}

Gao, Y. B. ^{[1
]}

Ji, T. B. ^{[2
]}

Li, Y. B. ^{[2
]}

机构：

[1] Shenyang Ligong Univ, Sch Sci, Shenyang 110159, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2011年 / 406卷 / 14期

基金：

中国国家自然科学基金;

关键词：

Magnetic phase transitions; Magnetocaloric effects; FIELD;

D O I：

10.1016/j.physb.2011.04.016

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this study the magnetic properties of Mn0.95Cr0.05As, prepared by mechanical milling, have been investigated. The results suggest that the presence of strains is very important for the magnetic state of the compound. In the presently studied compound, a combined magnetic and structural transition occurs from paramagnetic MnP phase to ferromagnetic NiAs phase at about 234 K. With further decreasing temperature, at 159 K, a transition from ferromagnetic NiAs phase to helimagnetic (H-a-type) MnP phase is observed, which is accompanied by an inverse magnetocaloric effect. The ferromagnetic phase is recovered when the temperature is increased. At both first-order transitions, at 159 and 234 K, large magnetic-entropy changes are observed. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2731 / 2733

页数：3

共 23 条

[1] Magnetocaloric effect in CeFe2 and Ru-doped CeFe2 alloys [J].

Chattopadhyay, MK ;

Manekar, MA ;

Roy, SB .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2006, 39 (06) :1006-1011

[2] Giant reversible magnetocaloric effect in metamagnetic HoCuSi compound [J].

Chen, J. ;

Shen, B. G. ;

Dong, Q. Y. ;

Hu, F. X. ;

Sun, J. R. .

APPLIED PHYSICS LETTERS, 2010, 96 (15)

[3] Magnetocaloric effects and reduced thermal hysteresis in Si-doped MnAs compounds [J].

Cui, W. B. ;

Liu, W. ;

Liu, X. H. ;

Guo, S. ;

Han, Z. ;

Zhao, X. G. ;

Zhang, Z. D. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 479 (1-2) :189-192

[4] Giant magnetocaloric effect in ε-(Mn0.83Fe0.17)3.25Ge antiferromagnet [J].

Du, J. ;

Cui, W. B. ;

Zhang, Q. ;

Ma, S. ;

Xiong, D. K. ;

Zhang, Z. D. .

APPLIED PHYSICS LETTERS, 2007, 90 (04)

[5] Large magnetocaloric effect and enhanced magnetic refrigeration in ternary Gd-based bulk metallic glasses [J].

Du, J. ;

Zheng, Q. ;

Li, Y. B. ;

Zhang, Q. ;

Li, D. ;

Zhang, Z. D. .

JOURNAL OF APPLIED PHYSICS, 2008, 103 (02)

[6] STRUCTURAL AND MAGNETIC PHASE-DIAGRAM FOR THE MNAS-CRAS SYSTEM [J].

FJELLVAG, H ;

KJEKSHUS, A .

ACTA CHEMICA SCANDINAVICA SERIES A-PHYSICAL AND INORGANIC CHEMISTRY, 1985, 39 (10) :671-680

[7] ON THE MAGNETIC AND STRUCTURAL-PROPERTIES OF THE MNAS1-XPX SYSTEM (X LESS-THAN-OR-EQUAL-TO 0.18) [J].

FJELLVAG, H ;

ANDRESEN, AF ;

BARNER, K .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1984, 46 (1-2) :29-39

[8] Coexistence of low-field positive and negative magnetic entropy change in SmMn2Ge2 [J].

Han, Zhida ;

Wu, Hongliang ;

Wang, Dunhui ;

Hua, Zhenghe ;

Zhang, Chengliang ;

Gu, Benxi ;

Du, Youwei .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (04)

[9] MAGNETIC PROPERTIES OF CR1-XMNX AS SYSTEM [J].

KAZAMA, N ;

WATANABE, H .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1971, 30 (05) :1319-&

[10] Field- and anisotropy-induced states in MnAs1-xPx-single crystals [J].

Kleeberg, C ;

Vetcher, A ;

Dunkel, H ;

Schunemann, JW ;

Barner, K .

JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 262 :502-507

← 1 2 3 →