Magnetic and electrical properties of Ho0.85Tb0.15Mn2 and Ho0.85Tb0.15Fe2

被引：0
作者：
Chelvane, JA
Markandeyulu, G [1 ]
Kumar, NH
Nirmala, R
Malik, SK
机构：
[1] Indian Inst Technol, Dept Phys, Magnetism & Mat Magnet Lab, Madras 600036, Tamil Nadu, India
[2] Tata Inst Fundamental Res, Dept CMP & MS, Bombay 400005, Maharashtra, India
来源：
PHYSICA B-CONDENSED MATTER | 2006年 / 373卷 / 01期
关键词：
magnetoresistance; spin fluctuations; magnetoelastic interactions;
D O I：
10.1016/j.physb.2005.11.097
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Magnetization and magneto resistance studies have been carried out on Ho0.85Tb0.15Mn2 and Ho0.85Tb0.15Fe2. The saturation magnetization of Ho0.85Tb0.15Mn2 is found to be large compared to Ho0.85Tb0.15Fe2. A large negative magnetoresistance of 27% was observed for Ho0.85Tb0.15Mn2 around the ordering temperature. In the paramagnetic region, a positive magneto resistance at lower magnetic fields and negative magnetoresistance is at higher magnetic fields have been observed for Ho0.85Tb0.15Mn2. A positive magnetoresistance of 3.5% with a step-like behavior has been observed for Ho0.85Tb0.15Fe2 at 5K. (c) 2005 Elsevier B.V. All rights reserved.
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页码：107 / 110
页数：4
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