| Magnetic properties and magnetoresistance effect of Y1-xGdxMn6Sn6 (x=0－1) compounds |
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| 引用本文： | 李云宝,张绍英,姚金雷,张立刚,沈保根.Magnetic properties and magnetoresistance effect of Y1-xGdxMn6Sn6 (x=0－1) compounds[J].中国物理 B,2003,12(3):328-331. |
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| 作者姓名： | 李云宝 张绍英 姚金雷 张立刚 沈保根 |
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| 作者单位： | Department of Applied Physics, University of Science and Technology of Wuhan, Wuhan 430081, China;State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; Department of Material Science and Engineering, Zhejiang University, Hangzhou 310027, China;Department of Applied Physics, University of Science and Technology of Wuhan, Wuhan 430081, China;State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No 50071041), and by the State Key Program of Basic Research of China (Grant No 50071041). |
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| 摘 要： | The magnetic properties and magnetoresistance effect of Y1-xGdxMn6Sn6 (x=0－1) compounds have been investigated by magnetization and resistivity measurements in the applied field range (0－5 T). Compounds with x=0.4－1 display ferrimagnetic behaviours in the whole magnetic ordering temperature range, while compounds with x=0－0.2 display a field-induced metamagnetic transition, and the threshold fields decrease with increasing Gd content. The compounds with x=0.1－0.2 undergo an antiferromagnetic to ferromagnetic transition with increasing temperature. The cell-parameter a and c and cell-volume V of compounds (x=0－1) increase with increasing Gd content. It was found that the saturation magnetization M_s of the compounds (x=0.4－1) decreases, while the ordering points of the compounds (x=0－1)increase with increasing Gd content. A large MR effect was observed in the compound with x=0.2, and the maximum absolute value of MR at 5 K under 3 T is close to 19.3%.
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| 关 键 词： | 钇钆锰锡化合物 磁特性 磁阻 |
| 收稿时间： | 2002-09-26 |
Magnetic properties and magnetoresistance effect of Y1-xGdxMn6Sn6 (x=0－1) compounds |
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| Li Yun-Bao,Zhang Shao-Ying,Yao Jin-Lei,Zhang Li-Gang and Shen Bao-Gen.Magnetic properties and magnetoresistance effect of Y1-xGdxMn6Sn6 (x=0－1) compounds[J].Chinese Physics B,2003,12(3):328-331. |
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| Authors: | Li Yun-Bao Zhang Shao-Ying Yao Jin-Lei Zhang Li-Gang and Shen Bao-Gen |
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| Institution: | Department of Applied Physics, University of Science and Technology of Wuhan, Wuhan 430081, China; State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; Department of Material Science and Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | The magnetic properties and magnetoresistance effect of Y1-xGdxMn6Sn6 (x=0－1) compounds have been investigated by magnetization and resistivity measurements in the applied field range (0－5 T). Compounds with x=0.4－1 display ferrimagnetic behaviours in the whole magnetic ordering temperature range, while compounds with x=0－0.2 display a field-induced metamagnetic transition, and the threshold fields decrease with increasing Gd content. The compounds with x=0.1－0.2 undergo an antiferromagnetic to ferromagnetic transition with increasing temperature. The cell-parameter a and c and cell-volume V of compounds (x=0－1) increase with increasing Gd content. It was found that the saturation magnetization M_s of the compounds (x=0.4－1) decreases, while the ordering points of the compounds (x=0－1)increase with increasing Gd content. A large MR effect was observed in the compound with x=0.2, and the maximum absolute value of MR at 5 K under 3 T is close to 19.3%. |
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| Keywords: | Y1-xGdxMn6Sn6 compounds magnetic properties metamagnetic transition magnetore-sistance effect |
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