Ferromagnetic Domains in Thin Single‐Crystal Nickel Platelets
Ferromagnetic Domains in Thin Single‐Crystal Nickel Platelets
复制标题
薄单晶镍片中的铁磁畴
DOI：
10.1063/1.1714103
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发表时间：
1965
影响因子：
3.2
通讯作者：
R. D. Blois
中科院分区：
文献类型：
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作者：
R. D. Blois
铁磁畴观测已经在单晶镍片上进行，厚度从900 A到10 μ以上，这些镍片是通过溴化物的氢还原非外延生长的。片晶通常为矩形或直角三角形，具有（001）面、100 μ m的边或腿，以及长度从几微米到3mm的边缘。由于它们的完美程度接近金属晶须，可逆的畴壁运动发生的变化领域小于0.01 Oe。因此，域配置，观察到的洛伦兹显微镜和比特技术，是在稳定或亚稳态平衡。对于厚度小于1.0 μ的薄片，磁化强度位于沿沿着110方向的平面内，这些方向是最小各向异性能的111方向的投影。梯形在边缘附近形成共同的闭合结构。一些180°的墙似乎是一个组合的尼尔布洛赫类型。当厚度为1.0 μ a时，在平面畴内出现条纹状粉末图案。
Ferromagnetic domain observations have been made on single‐crystal nickel platelets, ranging from 900 A to over 10 μ in thickness, that have been grown nonepitaxially by the hydrogen reduction of the bromide. The platelets are generally rectangles or right triangles with (001) faces, 〈100〉 sides or legs, and edges from several microns up to 3 mm in length. Because their degree of perfection is close to that of metal whiskers, reversible domain wall motion occurs with a change of field of less than 0.01 Oe. Thus the domain configurations, observed by Lorentz microscopy and the Bitter technique, are in stable or metastable equilibrium. For platelets less than 1.0 μ thick, the magnetization lies in the plane along 〈110〉 directions, these being the projections of the 〈111〉 directions of minimum anisotropy energy. Echelons form the common closure structure near the edges. Some 180° walls appear to be of a combined Neel‐Bloch type. At a thickness of 1.0 μ a striped powder pattern appears within the planar domai...