Citation: CAO Meng-Xiong, LIU Hao, WANG Hai-Ou, ZHANG Yun, TAN Wei-Shi, SHI Yang-Guang. Effects of B-and In-Doping on Microstructures, Magnetostriction and Magnetic Properties of Melt-Spun Fe₈₁Ga₁₉ Ribbons[J]. Acta Physico-Chimica Sinica, ;2016, 32(7): 1829-1838. doi: 10.3866/PKU.WHXB201605191 shu

Effects of B-and In-Doping on Microstructures, Magnetostriction and Magnetic Properties of Melt-Spun Fe₈₁Ga₁₉ Ribbons

1.
Department of Applied Physics, School of Science, Nanjing University of Science and Technology, Key Laboratory of Soft Chemistry and Functional Materials of Ministry of Education, Nanjing 210094, P. R. China;
2.
Institute of Materials Physics, Hangzhou Dianzi University, Hangzhou 310018, P. R. China;
3.
Department of Applied Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 210093, P. R. China

Received Date: 12 April 2016
Revised Date: 18 May 2016

Fund Project: The project was supported by the National Natural Science Foundation of China (11079022, U1332106) and Scientific Research Innovation Projects of Jiangsu Province for University Graduate Students, China (CXLX13_179).

Two series of (Fe_0.81Ga_0.19)_100-xBx (Fe-Ga-B) and (Fe_0.81Ga_0.19)_100-xIn_x (Fe-Ga-In) ribbons were successfully prepared with melt spinning method. Thermal treatments were afterwards conducted out on these Fe-Ga-B ribbons. The sample microstructures of the alloys were examined by high resolution X-ray diffraction (HRXRD) and extended X-ray absorption fine structure (EXAFS). The magnetic properties were measured by a vibrating sample magnetometer (VSM) at room temperature. The magnetostriction constant, measured by resistance strain gauge method, of the melt-spun (Fe_0.81Ga_0.19)₉₈B₂ ribbon decreased sharply due to the L1₂ phase. Both the Fe₂B and modified-DO₃ phases played a positive role in increasing the magnetostriction constant of the Fe-Ga alloys. The Fe₂B phase presented a lower saturation magnetization and a larger saturation field. As the B composition increased, the saturation magnetization of the ribbons decreased and the coercivity intensified. For the Fe-Ga-In ribbons, the non-magnetic In-rich phase was formed, leading to their lattices distortion and, hence, the magnetoelastic effect was weakened. The non-magnetic In-rich phase could suppress the movements of the magnetic domain and domain wall. Therefore, In-doping decreased the saturation magnetostriction and saturation magnetization of the Fe-Ga alloy. In-doping could also increase the coercivity of the Fe-Ga alloy. The addition of B and In changed the microstructures of the Fe-Ga alloys and accordingly their magnetic properties and magnetostriction.
- Fe-Ga alloy,
- Magnetostriction,
- Fe₂B phase,
- In-rich phase,
- EXAFS
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Effects of B-and In-Doping on Microstructures, Magnetostriction and Magnetic Properties of Melt-Spun Fe81Ga19 Ribbons

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通讯作者: 陈斌, bchen63@163.com

Effects of B-and In-Doping on Microstructures, Magnetostriction and Magnetic Properties of Melt-Spun Fe₈₁Ga₁₉ Ribbons