匀速加场下Ni-Zn铁氧体DW运动的描述

Domain wall motion research in Ni-Zn ferrite under constant rate of H'

本文讨论了不同成分Ni—Zn铁氧体在匀速加下微分磁化率与磁场的关系,结果表明,不同的加场速率样品有不同的(dm/dt)-H关系曲线,这些曲线可用能反映起始微分磁化率等诸参数进行拟合,这些参数均具有确定的物理意义;根据外场下DW(畴壁)运动理论说明了上述结果的合理性,得到了DW阻力函数的形式。

The (AM/dt)-H curves of Ni-Zn fertile with different composition and different rate of H' have been investigated. It is shown that (AM/At)-H curves depend on the rate of H'. Analytic expression for AM/At is derived with some meaningful parameters. From the domain wall motion theory we got the equation of DW resistance function.