Tunable magnetocaloric effect in RTi1-xMoxGe (R=Tb,Er) (x=0,0.15) compounds

被引：7
作者：
Nirmala, R.
Malik, S. K.
机构：
[1] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
[2] Univ Brasilia, Int Ctr Condensed Matter Phys ICCMP, Brasilia, DF, Brazil
来源：
EPL | 2007年 / 80卷 / 02期
关键词：
D O I：
10.1209/0295-5075/80/27001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The tetragonal layered compounds TbTiGe and ErTiGe order antiferromagnetically at 276K and 39 K, respectively. Partial substitution of Mo for Ti in these two compounds modifies the magnetic interactions giving rise to a ferromagnetic ground state which results in an enhanced magnetocaloric effect. The magnetic entropy change in ErTi0.85Mo0.15Ge for a magnetic field change of 5T is similar to 10.5J/kg/K as against similar to 0.8J/ kg/ K for ErTiGe in the vicinity of the magnetic transition. Thus, magnetocaloric properties of such layered materials may be tunable by suitable chemical substitutions. Copyright (C) EPLA, 2007.
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页数：6
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