| Structure and magnetic properties of intermetallic compounds Gd5Si2-xGe2-xM2x |
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| 作者单位： | School of Materials Science and Engineering Huazhong University of Science and Technology，School of Materials Science and Engineering，Nanchang University，Nanchang 330047，China，School of Materials Science and Engineering，Nanchang University，College of Technology，East China Jiaotong University，Nanchang 330013，China，School of Sciences，Nanchang University，School of Materials Science and Engineering，Nanchang University，Wuhan 430074，China，Nanchang 330047，China，Nanchang 330047，China，Nanchang 330047，China |
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| 摘 要： | 1 Introduction Nowadays, there is much interest in magnetic refrigeration materials, as they offer the prospect of an energy-efficient and environment friendly alternative for the traditional vapour cycle refrigeration technique. Magnetic refrigeration is…
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| 关 键 词： | 居里温度 退火 磁致冷 晶体结构 Gd5Si2-xGe2-xM2x |
| 收稿时间： | 2006-02-28 |
| 修稿时间： | 2006-08-16 |
Structure and magnetic properties of intermetallic compounds Gd5Si2-xGe2-xM2x |
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| LUO Guang-sheng,LEI Yu,XIN Yong,ZHOU Zheng-you. Structure and magnetic properties of intermetallic compounds Gd5Si2-xGe2-xM2x[J]. Transactions of Nonferrous Metals Society of China, 2006, 16(5): 1236-1239. DOI: 10.1016/S1003-6326(06)60407-X |
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| Authors: | LUO Guang-sheng LEI Yu XIN Yong ZHOU Zheng-you |
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| Affiliation: | 1. School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;2. School of Materials Science and Engineering, Nanchang University, Nanchang 330047, China;3. College of Technology, East China Jiaotong University, Nanchang 330013, China;4. School of Sciences, Nanchang University, Nanchang 330047, China;1. Centre for Near-net-shape Processing of Materials, Ryerson University, Toronto, Ontario, Canada;2. Nemak of Canada Corporation, Windsor, Ontario, Canada;1. Department of Mechanical and Industrial Engineering, Ryerson University, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada;2. CanmetMATERIALS, Natural Resources Canada, 183 Longwood Road South, Hamilton, Ontario L8P 0A5, Canada;1. Department of Mechanical and Industrial Engineering, Ryerson University, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada;2. CanmetMATERIALS, Natural Resourses Canada, 183 Longwood Road South, Hamilton, Ontario L8P 0A1, Canada;1. Department of Mining and Materials Engineering, McGill University, 3610 University Street, Montreal, Quebec H3A 0C5, Canada;2. Aluminium Research Centre-REGAL, McGill University, Montreal, Quebec H3A 0C5, Canada;3. State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, PR China |
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| Abstract: | The effects of substituting stable elements of M(M=Mn, Mo, Al, V) for nonmagnetic Si and Ge on the structure and magnetic properties of Gd5Si2Ge2 were investigated by means of X-ray powder diffraction and magnetic measurements. The experimental results show that there is no effect on the structure of parent phase Gd5Si2Ge2compound when being substituted by small amount of stable elements. The measurements of magnetic properties show that the Curie temperatures of Gd5Si2- Ge2- M x x 2x (M=Mn, Mo, Al and V) compounds have no obvious change before annealing, but they increase obviously with x increasing after annealing. Annealing can affect the crystalline microstructure and surface microstructure of the alloy after substitution. |
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| Keywords: | Curie temperature annealing magnetic refrigeration crystal structure |
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