Asymmetry in elementary events of magnetization reversal in a ferromagnetic/antiferromagnetic bilayer
Asymmetry in elementary events of magnetization reversal in a ferromagnetic/antiferromagnetic bilayer
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DOI：
10.1103/physrevlett.84.765
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发表时间：
2000-01-24
影响因子：
8.6
通讯作者：
Chien, CL
中科院分区：
文献类型：
--
作者：
Nikitenko, VI;Gornakov, VS;Chien, CL
实时磁光指示器薄膜图像显示，由于反铁磁层中交换弹簧的形核和行为，楔形NiFe/均匀FeMn双层膜中单个磁畴壁的运动具有明显的不对称性。磁化从圆形凝视开始从厚度开始。交换各向异性场(H-E)最小，静磁场(H-MS)最大的楔形区的末端，反转到基态的开始于交换各向异性场(H-E)最大，静磁场(H-MS)最小的薄端。
Real-time magneto-optical indicator film images reveal distinct asymmetry in the motion of a single domain wall in a wedged-NiFe/uniform-FeMn bilayer due to the nucleation and behavior of an exchange spring in the antiferromagnetic layer Magnetization reversal from the round stare begins at the thick. end of the wedge where the exchange anisotropy field (H-E) is minimal and the magnetostatic field (H-MS) is maximal, whereas reversal into the ground state begins from the thin end where H-E is maximal and H-MS is minimal.