A directional magnetization potential based model of magnetoelastic hysteresis
A directional magnetization potential based model of magnetoelastic hysteresis
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DOI：
10.1063/1.1431433
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发表时间：
2002-01
影响因子：
3.2
通讯作者：
W. Armstrong
中科院分区：
文献类型：
--
作者：
W. Armstrong
该理论成功地再现和解释了Tb0.3Dy0.7Fe1.9的实验磁致伸缩和磁滞行为。众所周知，非常大量的单独畴壁平移事件联合收割机组合以在宏观尺寸的样品中产生每个可测量的畴变换。由于材料中存在缺陷，每个单独的畴壁可能会受到一定程度的畴壁平移抑制，然而，抑制的严重程度将在空间上变化。因此，我们假设，在材料中的缺陷的存在下，增加了在一个过程中的后续域状态的定向磁化电位，并分布在一个参数选定的非平凡的概率，逆指数形式熟悉的统计热力学的研究中的E111型畴状态的占领。随后的高磁致伸缩和高磁化状态的磁化势的增加延缓了它们的转变。
The theory presented in this article successfully reproduces and explains the experimental magnetostriction and magnetization hysteresis behavior of Tb0.3Dy0.7Fe1.9. It is well known that a very large number of individual domain wall translation events combine to produce each measurable domain transformation in a macroscopic sized sample. Each individual domain wall may be expected to suffer some level of domain wall translation inhibition due to the presence of defects in the material, however, the severity of the inhibition will spatially vary. We therefore assume that the presence of defects in the material increases the directional magnetization potential of subsequent domain states within a process, and distributes nontrivial probabilities of occupation of 〈111〉 type domain states in a parameter selected, inverse exponential form familiar from the study of statistical thermodynamics. The increased magnetization potential of subsequent high magnetostriction and high magnetization states retards their ...