Domain wall motion in ferromagnetic systems with perpendicular magnetization
Domain wall motion in ferromagnetic systems with perpendicular magnetization
复制标题
垂直磁化铁磁系统中的畴壁运动
DOI：
10.1016/j.jmmm.2008.12.011
复制
发表时间：
2009
影响因子：
2.7
通讯作者：
L. Buda
中科院分区：
文献类型：
--
作者：
H. Szambolics;J. Toussaint;A. Marty;I. Miron;L. Buda
尽管我们缺乏明确的实验证据，但显然面外磁化系统比面内磁化系统更适合自旋电子应用，这主要是因为实现磁畴壁运动所需的电流密度较小。 [Co/Pt]多层膜属于第一类材料，面外磁化取向源于强的垂直磁晶各向异性。如果磁化自身排列在平面外，就会出现狭窄的布洛赫壁。在本文中，使用微磁模拟研究了该系统的场驱动和电流驱动的畴壁运动。考虑了三种类型的几何形状：块体、薄膜和导线，并且对所有这些几何形状在施加场和注入电流的影响之间进行了全面比较。系统尺寸的减小导致临界场和临界电流的减小，但不影响畴壁位移机制。
Although we lack clear experimental evidence, apparently out-of-plane magnetized systems are better suited for spintronic applications than the in-plane magnetized ones, mainly due to the smaller current densities required for achieving domain wall motion. [Co/Pt] multilayers belong to the first category of materials, the out-of-plane magnetization orientation arising from the strong perpendicular magnetocrystalline anisotropy. If the magnetization arranges itself out-of-plane narrow Bloch walls occur. In the present paper, both field and current-driven domain wall motion have been investigated for this system, using micromagnetic simulations. Three types of geometries have been taken into account: bulk, thin film and wire, and for all of them a full comparison is done between the effect of the applied field and injected current. The reduction of the system's dimension induces the decrease of the critical field and the critical current, but it does not influence the domain wall displacement mechanism.
具有垂直磁各向异性的 Co/Ni 线中电流驱动的畴壁运动
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
H. Tanigawa;T. Koyama;N. Ohshima;S. Fukami;N. Ishiwata;S. Kasai;T. Ono
通讯作者：
T. Ono
影响因子：
8.6
作者：
Yamanouchi, M;Chiba, D;Ohno, H
通讯作者：
Ohno, H