THERMODYNAMICALLY STABLE MAGNETIC VORTEX STATES IN MAGNETIC CRYSTALS
THERMODYNAMICALLY STABLE MAGNETIC VORTEX STATES IN MAGNETIC CRYSTALS
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DOI：
10.1016/0304-8853(94)90046-9
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发表时间：
1994-12-01
影响因子：
2.7
通讯作者：
HUBERT, A
中科院分区：
文献类型：
--
作者：
BOGDANOV, A;HUBERT, A
磁涡旋可以通过所谓的Dzyaloshinsky相互作用在磁性材料中稳定。通过数值求解圆胞近似下的微分方程，系统地计算了易轴型单轴铁磁材料的结构。在减少单位两个外部参数遗留下来：一个外部场的值平行于晶轴和Dzyaloshinsky相互作用的相对强度。在这些变量的相图由三个稳定的相位：在高场值的均匀状态，在低场的一维调制的螺旋状态和新的涡旋状态在中间场范围。相应的计算磁化曲线清楚地显示了这些状态之间的过渡。
Magnetic vortices can be stabilized in magnetic materials by a so-called Dzyaloshinsky interaction. Their structure is calculated systematically for uniaxial ferromagnetic materials of the easy-axis type by numerically solving the differential equations in the circular cell approximation. In reduced units two external parameters are left over: the value of an external field parallel to the crystal axis and the relative strength of the Dzyaloshinsky interaction. A phase diagram in these variables consists of three thermodynamically stable phases: a uniform state at high field values, a one-dimensionally modulated spiral state at low fields and the new vortex state in an intermediate field range. The corresponding calculated magnetization curves clearly show the transitions between these states.