在观测不同温度下磁畴衬度和磁畴区域的基础上,讨论了热退磁和磁畴成核的随机性.
Study on the temperature variation of domain revealed that the maindomains remain the same without change during heating, but the supplementary do-mains, such as the cone like reversal domains in the surface, would be changedboth in the size and shape, or even disappeared, while temperature is higher than240℃. Since the nucleation sites and the spontaneous orientation of nucleated do-main has some randomness, so the domain patterns should be changed every timeafter the thermal demagnetization higher than Curie point.
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