Exchange coupling in magnetic multilayers grown on iron whiskers
Exchange coupling in magnetic multilayers grown on iron whiskers
复制标题
铁晶须上生长的磁性多层膜中的交换耦合
DOI：
10.1016/s0304-8853(98)01139-1
复制
发表时间：
1999
影响因子：
2.7
通讯作者：
D. Pierce
中科院分区：
文献类型：
--
作者：
J. Unguris;R. Celotta;D. Tulchinsky;D. Pierce
磁性多层材料性质的理论预测的有意义的测试要求多层材料的制造具有与理论模型几乎相同的原子尺度精度。在单晶铁晶须衬底上外延生长的多层薄膜非常接近这一理想标准。我们研究了Fe/(Ag, Au, Cr, Mn， V, Cu，或Al)/Fe（110）晶须结构的生长，磁性结构和交换耦合，主要使用反射高能电子衍射（RHEED）和扫描电子显微镜与偏振分析（SEMPA），并在某些系统中，共聚焦磁光克尔效应（MOKE）显微镜。在几乎逐层增长的情况下，测量到的振荡耦合周期和强度与理论预测吻合得很好。对于粗糙的生长，通常观察到不可预测的非共线耦合。
Meaningful tests of theoretical predictions of magnetic multilayer properties require the fabrication of multilayers with nearly the same atomic scale precision as the theoretical models. Multilayers grown epitaxially on single-crystal Fe whisker substrates come very close to this ideal standard. We have investigated the growth, magnetic structure, and exchange coupling of Fe/(Ag, Au, Cr, Mn, V, Cu, or Al)/Fe (110) whisker structures primarily using reflection high-energy electron diffraction (RHEED) and scanning electron microscopy with polarization analysis (SEMPA), and in some systems, confocal magneto-optic Kerr effect (MOKE) microscopy. In cases of nearly layer-by-layer growth, the measured oscillatory coupling periods and strengths agree well with theoretical predictions. For rougher growth, less predictable non-collinear coupling is generally observed.