Motion of a Ferromagnetic Domain Wall inFe3O4
Motion of a Ferromagnetic Domain Wall inFe3O4
复制标题
Fe3O4 中铁磁畴壁的运动
DOI：
10.1103/physrev.85.664
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发表时间：
1952
期刊：
影响因子：
--
通讯作者：
J. Galt
中科院分区：
文献类型：
--
作者：
J. Galt
从单晶中切下的Fe3O4样品上做了实验，其铁磁畴图案包括一个单独的畴壁，其运动可以研究。该样品具有在低频下高（约5000）的磁导率，并且在1000次循环以上快速下降。滞后回线和壁面速度与外加磁场的数据也被采取。数据进行了讨论的铁磁畴壁理论的最新发展。看来，这个理论解释我们的数据令人满意，并在使用它来解释我们的数据，我们确定了一些基本的磁性常数的Fe3O4。我们也可以通过这种方式对铁氧体中的畴壁运动有一些了解。
Experiments have been made on a sample of Fe 3 O 4 cut from a single crystal in such a way that its ferromagnetic domain pattern includes an individual domain wall whose motion can be studied. This sample has a permeability which is high (about 5000) at low frequencies and drops off rapidly above 1000 cycles. A hysteresis loop and data on wall velocity vs applied field were also taken. The data are discussed in terms of recent developments in the theory of the ferromagnetic domain wall. It appears that this theory explains our data satisfactorily, and that in using it to explain our data we determine some of the fundamental magnetic constants of Fe 3 O 4. We are also able to gain some insight into domain wall motion in ferrites generally in this way.