Observations by Lorentz microscopy of movements of magnetic domain walls in amorphous Fe78B13Si9 alloys
Observations by Lorentz microscopy of movements of magnetic domain walls in amorphous Fe78B13Si9 alloys
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洛伦兹显微镜观察非晶 Fe78B13Si9 合金磁畴壁的运动
DOI：
10.1016/0304-8853(94)90494-4
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
A. Stantero
中科院分区：
文献类型：
--
作者：
B. Astié;M. Fagot;C. Béraud;J. Degauque;E. Ferrara;A. Stantero
使用洛伦兹模式的透射电子显微镜研究了淬火状态和部分结晶状态的 Fe78B13Si9 非晶态合金的微观结构和磁畴结构之间的相互作用。在原位施加平面磁场的静态和动态条件下进行了 TEM 观察。淬火状态下的域结构尺寸仅因退火后结晶的开始而略有改变。在存在各种缺陷的情况下测量的磁滞回线提供了孤立畴壁与裂纹和大析出物之间的钉扎效应的证据。当缺陷密度足够高时，α-Fe 颗粒和沉淀物可以与 DW 相互作用，而不会出现明显的钉扎。
The interaction between microstructure and magnetic domain configuration has been studied in the Fe78B13Si9amorphous alloy in as-quenched and partially crystallized states, using transmission electron microscopy in the Lorentz mode. TEM observations have been made in static and dynamic conditions under planar magnetic field applied in situ. The size of the domain structure in the as-quenched state is only slightly modified by the onset of crystallization after annealing. The measured hysteresis loops in presence of various defects provide evidence of the pinning effect between isolated domain walls and cracks and large precipitates. When the defect density is high enough, α-Fe particles and precipitates can interact, without marked pinning, with DWs.