Fe基合金薄带应力感生磁各向异性非线性关系研究  

Nonlinear Relationship of Stress-Induced Magnetic Anisotropy in Fe-Based Alloy Ribbons

作　　者：王卓 杨慧雅 范晓珍[1] 张建强 郑金菊[1] 叶慧群[1] 方允樟[1] 

机构地区：[1]浙江师范大学物理与电子信息工程学院,浙江 金华

出　　处：《材料科学》2021年第2期111-118,共8页Material Sciences

摘　　要：采用原位同步辐射X射线衍射、HP4294A型阻抗分析仪、伸长量原位观测等方法研究了Fe-Cu-Nb-Si-B非晶合金样品在自由和张应力退火条件下的磁各向异性和晶格各向异性以及宏观变化量之间的关系。结果表明,样品的晶格各向异性与外加张应力呈线性关系,磁各向异性与外加张应力呈指数关系,外加张应力退火样品的磁各向异性是由样品的晶格各向异性和近邻纳米晶粒间的交换耦合作用改变共同导致的。The magnetic anisotropy, lattice anisotropy and macroscopic changes of Fe-Cu-Nb-Si-B amorphous alloy samples under free and tensile stress annealing conditions were studied by in-situ synchro-tron X-ray diffractometer, HP4294A impedance analyzer and elongation in-situ observation tools. The results show that the lattice anisotropy of the sample has a linear relationship with the applied tensile stress, and the magnetic anisotropy has an exponential relationship with the applied tensile stress. The magnetic anisotropy of the sample annealed with tensile stress is caused by the change of the crystal lattice anisotropy of the sample and the exchange coupling between neighboring nanocrystalline grains.

关 键 词：应力 磁各向异性 微观结构 纳米晶 应变 

分 类 号：R28[医药卫生—中药学]