It is shown that exchangeanisotropy results from the unidirectional anisotropy. And stress anisotropy has large effect on hard or easy magnetization direction.
结果表明：界面交换作用导致单向各向异性，应力各向异性对材料的磁化难易程度有较大影响。
2
It is found that the system will be in monostable state or bistable state, which is controlled by the competition between the uniaxial anisotropy and the exchangeanisotropy of the system.