<001> ORIENTED SINGLE CRYSTAL GROWTH AND MAGNETOSTRICTION OF Fe81Ga19 ALLOYS
CHEN Libiao, ZHU Xiaoxi, LI Chuan, LIU Jinghua, JIANG Chengbao, XU Huibin
Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191
Cite this article:
CHEN Libiao ZHU Xiaoxi LI Chuan LIU Jinghua JIANG Chengbao XU Huibin. <001> ORIENTED SINGLE CRYSTAL GROWTH AND MAGNETOSTRICTION OF Fe81Ga19 ALLOYS. Acta Metall Sin, 2011, 47(2): 169-172.
Abstract The Fe81Ga19 single crystals were grown in a floating zone melting furnace at a growth rate of 4 mm/h by using a seed crystal. A single crystal was grown by using the seed crystal oriented 5o from the <001> orientation. Pole figure tests were taken at different parts of the single crystal and showed that the start and end parts' axial orientations were 5o and 4o from the <001> orientation, respectively. Another single crystal was grown by using the seed crystal oriented <001> orientation. Magnetostrictive properties along the axis of the crystals λ// were measured for the single crystal, and the saturated magnetostriction λ// up to 0.0324% was achieved under the pre-stress of 60 MPa. Initial magnetization curves were measured in single crystals along <100>, <110> and <111> axis, respectively. From the magnetization curves, magnetocrystalline anisotropy constants of Fe81Ga19 alloys were calculated, and the values of K1 and K2 were 1.3×104 and -2.6×104 J/m3, respectively.
