Short range order transformation and magnetostriction of Fe83Ga17 ribbons |
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| Authors: | Zhu Jie Peng Fu-Ling Fang Mei-Ling Li Ji-Heng Gao Xue-Xu Yu Rong-Hai |
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| Affiliation: | State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;School of Materials Science and Engineering, Beihang University, Beijing 100191, China |
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| Abstract: | The relationship between magnetostriction and structure of melt-spun Fe83Ga17 ribbons are investigated by XRD and Mõssbauer spectrum technique (MS). As the heat-treatment temperature increases from 650oC to 800oC, the magnetostriction coefficient of Fe83Ga17 ribbon first increases and then decreases. The largest magnetostriction coefficient (-578.4 ppm) is achieved in those specimens quenched at 750oC. According to the XRD and Mõssbauer spectrum analysis, a small quantity of DO3 phase is precipitated in Fe83Ga17 ribbons when quenched from 650oC and the DO3 phase is gradually transformed into B2-like phase if quenched at higher temperature. However, both DO3 and B2-like phases disappear when the temperature increases up to 800oC. From this point of view, B2-like phase might be beneficial to the enhancement of magnetostrictive properties of melt-spun ribbons. |
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| Keywords: | Fe–Ga alloy magnetostriction Mõssbauer spectroscopy short range order |
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