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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Two-step temperature deposited FePt bilayer for tunable magnetic properties
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Two-step temperature deposited FePt bilayer for tunable magnetic properties

机译:两步温度沉积FePt双层可调节磁性能

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摘要

Tuning the magnetic properties of FePt media is of great interest in the bid to achieve high areal densities. In this work, we demonstrate that properties of FePt media can be tuned using a two-step temperature deposited FePt bilayer. In this bilayer scheme, the first layer of FePt was deposited at a high nominal temperature (600 degrees C), whilst the second layer was deposited at a lower temperature over the first layer. This resulted in tunable magnetic and improved topographical properties, and was due to the interplay of a number of temperature-dependent factors such as epitaxial growth, new grain nucleation, surface mobility, and difference in the thermal expansion coefficients. Transmission electron microscopy imaging was used to understand the growth dynamics of the second FePt layer in the two-step temperature deposited structures.
机译:为了实现高的面密度,调整FePt介质的磁性能引起了极大的兴趣。在这项工作中,我们证明了可以使用两步温度沉积FePt双层来调节FePt介质的性能。在该双层方案中,第一层FePt在较高的标称温度(600摄氏度)下沉积,而第二层在较低的温度下沉积在第一层上。这导致可调节的磁性和改善的形貌特性,并且是由于许多与温度有关的因素(例如外延生长,新晶粒成核,表面迁移率和热膨胀系数的差异)之间的相互作用。使用透射电子显微镜成像来了解第二步温度沉积结构中第二FePt层的生长动力学。

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