Micromagnetic properties of MnAs(0001)∕GaAs(111) epitaxial films
Micromagnetic properties of MnAs(0001)∕GaAs(111) epitaxial films
复制标题
MnAs(0001)∕GaAs(111)外延薄膜的微磁性能
DOI:
--
复制
发表时间:
2006
期刊:
影响因子:
--
通讯作者:
K. Ploog
中科院分区:
文献类型:
--
作者:
R. Engel;T. Hesjedal;D. Schaadt;L. Däweritz;K. Ploog
The micromagnetic properties of MnAs thin films grown on the (111)B-oriented GaAs surface have been investigated. Compared to films grown on (001) surfaces, these films exhibit completely different domain patterns, as the c axis of the hexagonal unit cell is oriented normal to the surface. In the course of the first order phase transition, ferromagnetic α-MnAs forms a network of quasihexagonal areas separated by β-MnAs. We present an analysis of the micromagnetic properties based on imaging and simulations. We observe closure domains that either appear as a vortex-like state or a stripe structure.