陈立彪朱小溪李川刘敬华蒋成保徐惠彬
金属学报
doi:10.3724/SP.J.1037.2010.00343
采用悬浮区熔法, 加入籽晶控制生长取向, 以4 mm/h的生长速度, 制备了轴向<001>择优取向的 Fe81Ga19单晶. 极图测试结果发现, 采用偏离轴向<001>方向约5o的籽晶生长得到的单晶, 生长始端和生长末端轴向取向分别偏离<001>取向5o和4o, 上下取向差仅为1o. 另一单晶采用轴向<001>取向籽晶生长得到, 当施加60 MPa压力时, 饱和磁致伸缩性能达到0.0324%. 测试了<100>, <110>和<111> 取向单晶的初始磁化曲线, 利用初始磁化曲线, 计算得出Fe81Ga19单晶的磁晶各向异性常数值K1和K2, 分别为1.3×104和-2.6×104 J/m3.
关键词:
Fe81Ga19单晶
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<001> orientation
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magnetostriction
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magnetocrystalline anisotropy
B. Fuquan
金属学报(英文版)
Structure and magnetic properties of the YFe12-x Tix compounds with x=0.85, 1.00,1.10, 1.20 and 1.30 have been investigated. Both the therrnomagnetic analysis and X-ray diffraction patterns show that all compounds studied are almost single phase and crystallize in the ThMn12-type of structure. The lattice parameters a, c and unit cell volume V increase monotonously with increasing Ti content. Curie temperature TC is almost independent on Ti content while the spontaneous magnetization M0,the anisotropy field Ba and the anisotropy constant K1 decrease monotonously with increasing Ti content and increasing temperature from 1.5K to 293K.
关键词:
magnetocrystalline anisotropy
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