Effect of deviation from stoichiometry on magnetic and magnetocaloric properties in MnAs1-xSbx
Effect of deviation from stoichiometry on magnetic and magnetocaloric properties in MnAs1-xSbx
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DOI：
10.1016/j.jmmm.2003.12.1036
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发表时间：
2004-05-01
影响因子：
2.7
通讯作者：
Wada, H.
中科院分区：
文献类型：
--
作者：
Morikawa, T.;Wada, H.
制备具有过量Mn含量的Mn 1 + δ As 1-xSbx样品并进行磁化测量。当样品中微量富集Mn时，得到了单一相的NiAs型结构。据推测，过量的Mn原子占据了NiAs型结构中的间隙位点。居里温度和磁熵变随δ的增大而减小。这些结果表明，过量Mn原子对MnAs_（1-x）Sb_x体系的磁性有显著影响。(C)2003年爱思唯尔B。V.保留所有权利。
The Mn1+delta As1-xSbx samples with the excess Mn content were prepared and subjected to the magnetization measurements. The single phase of the NiAs-type structure was obtained when the samples were slightly enriched by Mn. Presumably, the excess Mn atoms occupy the interstitial site in the NiAs-type structure. The Curie temperature and magnetic entropychange are decreased with increasing delta. These results suggest that the excess Mn atoms have significant influences on magnetism of MnAs1-xSbx system. (C) 2003 Elsevier B. V. All rights reserved.