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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Manipulating the magnetic properties and interphase coupling in FePt/Pt/Fe multilayer films by Pt spacer layer
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Manipulating the magnetic properties and interphase coupling in FePt/Pt/Fe multilayer films by Pt spacer layer

机译：PT间隔层操纵磁性特性和闭合磁性和差异耦合

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摘要

Single-layer FePt (10 nm) film and trilayer FePt (10 nm)/Pt (t)/Fe (3 nm)/Pt (3 nm) (t = 0 nm, 0.5 nm, 1 nm, 2 nm and 4 nm) films were prepared on MgO (1 0 0) substrate. Their crosssectional morphologies, ordering and interphase coupling behaviors were studied in detail. The results showed that the interphase coupling stiffness (J) increased at first, and then decreased with increasing thickness of the spacer layer. An exponential fitting of J similar to t dependence was obtained for t >= 1 nm. A discrepancy between experiments and exponential fitting, mainly caused by interfacial diffusion, was seen for t <= 1 nm. With respect to the proposed idea of using a spacer layer to modify the interface, FePt (8 nm)/Pt (0.5 nm)/Fe (3 nm)/Pt (3 nm) anisotropic nanocomposite film exhibited the best magnetic properties, with coercivity 0.87 T and (BH)(max) 370 kJ m(-3), accounting for 95% of the theoretical (BH) max of L1(0)-ordered FePt phase.
机译：单层缩合（10nm）膜和三层胶片（10nm）/ pt（t）/ fe（3nm）/ pt（3nm）（t = 0nm，0.5nm，1nm，2nm和4nm ）在MgO（1 0 0）底物上制备薄膜。 详细研究了它们的横截面形态，排序和间环偶联行为。 结果表明，间隔耦合刚度（J）首先增加，然后随着间隔层的厚度的增加而降低。 为T> = 1nm获得了类似于T依赖性的幂的指数拟合。 实验与指数配件之间的差异，主要是由界面扩散引起的T <= 1nm。 关于使用间隔层改变界面的建议思路，赋予矫顽力（8nm）/ pt（0.5nm）/ pt（3nm）/ pt（3nm）各向异性纳米复合膜具有最佳磁性性能 0.87 T和（BH）（MAX）370 kJ m（-3），占L1（0）级级级阶段的理论（BH）最大的95％。

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