| Relationship between crystal growth mode,preferred orientation and magnetostriction of （Tb0.3Dy0.7）Fe1.95 alloys |
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| 引用本文： | 张世荣,;李扩社,;于敦波,;李勇胜,;杨红川,;李红卫,;涂赣峰. Relationship between crystal growth mode,preferred orientation and magnetostriction of （Tb0.3Dy0.7）Fe1.95 alloys[J]. 中国稀土学报(英文版), 2008, 26(3): 388-391. DOI: 10.1016/S1002-0721(08)60102-7 |
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| 作者姓名： | 张世荣, 李扩社, 于敦波, 李勇胜, 杨红川, 李红卫, 涂赣峰 |
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| 作者单位： | [1]School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China; [2]National Engineering Research Center for Rare Earth Materials, General Research Institute for Non-Ferrous Metals, Grirem Advanced Materials Co. Ltd., Beijing 100088, China |
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| 基金项目： | Project supported by National High-Tech R＆D Program（2006AA03Z106） and Beijing Natural Science Foundation （2062012）.Acknowledgement： We are greatly indebted to Dr. Fang Yikun and Prof. Han Baoshan for assisting in observing magnetic domains. |
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| 摘 要： | The relationship between crystal growth mode, preferred orientation and magnetostrictive properties of （Tb0.3Dy0.7）Fe1.95 alloys was investigated at different directional solidification rates. The results showed that preferred orientation had a strong influence on the characteristics of （Tb0.3Dy0.7）Fe1.95 alloys. At lower solidification rates, the sample with 〈110〉 preferred orientation showed larger low-field magnetostriction and apparent compressive stress effect. The excessive solidification rate resulted in failure of preferred orientation and a poor magnetostrictive performance. With an increase in solidification rates, the crystal growth modes changed gradually from cellular and primary dendrite morphology to developed dendritic morphology. In addition, domain configurations were observed using magnetic force microscopy, and the change of magnetostrictive properties was interpreted in terms of revealing the domain configurations.
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| 关 键 词： | TbDyFe 生长模型 磁弹性 稀土 |
| 收稿时间： | 2008-02-08 |
| 修稿时间： | 8 May 2008. |
Relationship between crystal growth mode, preferred orientation and magnetostriction of (Tb0.3Dy0.7)Fe1.95 alloys |
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| Shirong ZHANG, Kuoshe LI, Dunbo YU, Yongsheng LI, Hongchuan YANG, Hongwei LI,Ganfeng TU. Relationship between crystal growth mode, preferred orientation and magnetostriction of (Tb0.3Dy0.7)Fe1.95 alloys[J]. Journal of Rare Earths, 2008, 26(3): 388-391. DOI: 10.1016/S1002-0721(08)60102-7 |
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| Authors: | Shirong ZHANG Kuoshe LI Dunbo YU Yongsheng LI Hongchuan YANG Hongwei LI Ganfeng TU |
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| Affiliation: | aSchool of Materials and Metallurgy, Northeastern University, Shenyang 110004, China;bNational Engineering Research Center for Rare Earth Materials, General Research Institute for Non-Ferrous Metals, Grirem Advanced Materials Co. Ltd., Beijing 100088, China |
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| Abstract: | The relationship between crystal growth mode, preferred orientation and magnetostrictive properties of (Tb0.3Dy0.7)Fe1.95 alloys was investigated at different directional solidification rates. The results showed that preferred orientation had a strong influence on the characteristics of (Tb0.3Dy0.7)Fe1.95 alloys. At lower solidification rates, the sample with <110> preferred orientation showed larger low-field magnetostriction and apparent compressive stress effect. The excessive solidification rate resulted in failure of preferred orientation and a poor magnetostrictive performance. With an increase in solidification rates, the crystal growth modes changed gradually from cellular and primary dendrite morphology to developed dendritic morphology. In addition, domain configurations were observed using magnetic force microscopy, and the change of magnetostrictive properties was interpreted in terms of revealing the domain configurations. |
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| Keywords: | preferred orientation TbDyFe magnetostriction magnetic domain structure rare earths |
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