Magnetostriction and microstructure of melt-spun Fe_(77)Ga_(23) ribbons prepared with different wheel velocities

作     者：刘昊 王海欧 曹梦雄 谭伟石 时阳光 徐锋 贾全杰 黄宇营 Hao LIU;Hai-ou WANG;Meng-xiong CAO;Wei-shi TAN;Yang-guang SHI;Feng XU;Quan-jie JIA;Yu-ying HUANG

作者机构：南京理工大学理学院应用物理系软化学与功能材料教育部重点实验室南京210094 南京航空航天大学理学院应用物理系南京211106 南京理工大学材料科学与工程学院南京210094 中国科学院高能物理研究所北京100039 中国科学院上海应用物理研究所上海201800 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2015年第25卷第1期

页      面：122-128页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Projects(11079022 51271093 10904071 U1332106)supported by the National Natural Science Foundation of China 

主　　题：magnetostriction texture modified-DO3 phase melt-spun Fe77Ga23 ribbon 

摘      要：A set of stacked ribbons with the composition of Fe77Ga23 were prepared with different wheel velocities of 7 m/s, 12.5 m/s and 25 m/s（named as S7, S12.5 and S25, respectively）. High resolution X-ray diffraction patterns of these ribbons show that all the ribbons present the disordered A2 structure, whereas an additional modified-DO3 phase is detected in S12.5 and S25. S25 has stronger（100） texture than other two samples. Ga K-edge extended X-ray absorption fine structure results indicate that both bond distance and the number of Ga atoms in the second neighbor shell around Ga decrease with increasing wheel velocity. No Ga cluster is detected in the studied ribbons. A short-range ordering Ga-rich phase and large local strain have no obvious influence on magnetostriction of S7. It is believed that both the（100） texture and the additional modified-DO3 phase play a positive role in magnetostrictive properties of Fe77Ga23 ribbons.