Abstract L10 ordering at low temperature and controlled grain size are prerequisites for the fabrication of magnetic recording media. This can be achieved by several methods such as addition, under layer or over layer of third element in FePt. In the present work, the kinetics of L10 ordering in the presence of immiscible element Au is investigated by varying the Au concentration at different annealing temperatures. The structural analysis shows that the Au additive not only promotes the ordering at low temperature but also supports the textured growth along (001) plane. The magnetic measurements supported by theoretical simulations using Monte Carlo predicts that the enhancement in coercivity attributed to induced strain anisotropy and weakening of inter-granular exchange coupling may be due to presence of Au at grain boundaries.

中文翻译：

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Au添加剂FePt薄膜中应变诱导磁各向异性的建模

摘要 L10 低温有序化和可控晶粒尺寸是制造磁记录介质的先决条件。这可以通过几种方法来实现，例如在 FePt 中添加、下层或上层第三元素。在目前的工作中，通过在不同退火温度下改变 Au 浓度来研究在不混溶元素 Au 存在下 L10 排序的动力学。结构分析表明，Au添加剂不仅促进了低温下的有序化，而且还支持沿（001）面的织构生长。使用蒙特卡罗的理论模拟支持的磁测量预测，归因于诱导应变各向异性和晶间交换耦合减弱的矫顽力增强可能是由于晶界处存在 Au。