Magnetic mesostructure of giant magnetostrictive spring magnet type multilayers
Magnetic mesostructure of giant magnetostrictive spring magnet type multilayers
复制标题
超磁致伸缩弹簧磁体型多层膜的磁细观结构
DOI：
10.1063/1.370232
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发表时间：
1999
影响因子：
3.2
通讯作者：
M. Wuttig
中科院分区：
文献类型：
--
作者：
H. D. Chopra;A. Ludwig;E. Quandt;S. Hua;H. Brown;L. Swartzendruber;M. Wuttig
超磁致伸缩TbFe/FeCo多层膜的磁行为表明，由于相邻层间的杂散场耦合，沉积态TbFe/FeCo多层膜的各层在退磁状态下为单畴。这种多层膜在磁化反转期间不显示集体行为。与此相反，通过在543 K下退火1小时获得的无应力薄膜细分成多个域，以降低其总能量，并显示出集体磁化行为。一个有趣的观察是动态的形成和崩溃的磁致弹性诱导域TbFe层退火多层膜在反转过程中。
The magnetic behavior of giant magnetostrictive TbFe/FeCo multilayers show that individual layers of as-deposited multilayers in their demagnetized state are single domain due to stray-field coupling between adjacent layers. Such multilayers do not show a collective behavior during magnetization reversal. In contrast, stress-free films obtained by annealing at 543 K for 1 h subdivide themselves into multiple domains to lower their overall energy, and show a collective magnetization behavior. An interesting observation is the dynamic formation and collapse of magnetoelastically induced domains in TbFe layers in annealed multilayers during reversal.