A rotational vector Preisach model for unoriented media
A rotational vector Preisach model for unoriented media
复制标题
无方向性介质的旋转矢量Preisach模型
DOI：
10.1063/1.344582
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发表时间：
1990
影响因子：
3.2
通讯作者：
C. Krafft
中科院分区：
文献类型：
--
作者：
K. Wiesen;S. Charap;C. Krafft
到目前为止，向量Preisach模型是由角度分布的标量模型组成的。我们假设将旋转能力添加到Preisach元件的二元响应中，以获得使用单一密度函数的矢量行为。旋转场H将从标量测量获得的Preisach密度函数划分为与磁化方向相关联的区域，该区域取决于所施加的场历史。具有h*α‖H‖(1<；α<；2，实验测定)的元素的磁化强度不是由H取向的，而是可以由H的平行分量转换的，具有中间值h*的元素以滞后于场的角度不可逆地旋转。该模型在所有方向上都具有相同的标量性质，并在用矢量振动样品磁强计对钡铁氧体软盘进行的测量中得到了很好的模拟。
Heretofore, vector Preisach models have consisted of angularly distributed scalar models. We postulate adding rotational capability to the binary response of the Preisach elements to obtain vector behavior using a single density function. A rotating field H divides the Preisach density function, which is obtained from scalar measurements, into regions associated with magnetization directions dependent on the applied field history. The magnetizations of elements with h* α‖H‖ (1<α<2 and is experimentally determined) are not oriented by H, but may be switched by the parallel component of H. Elements with intermediate values of h* rotate irreversibly at an angle which lags the field. The model has the same scalar properties in all directions and has performed well in simulating measurements made on a barium ferrite floppy disk with a vector vibrating sample magnetometer.