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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Microstructure evolution, magnetic and mechanical properties of FePt/B4C multifunctional multilayer composite films
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Microstructure evolution, magnetic and mechanical properties of FePt/B4C multifunctional multilayer composite films

机译：FePt / B4C多功能多层复合膜的微观结构演变，磁性和力学性能

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摘要

FePt/B4C multilayer composite films with a Fe/Pt two-layer structure and a Fe/Pt/Fe sandwich structure were prepared by magnetron sputtering subsequent annealing in vacuum. When the B4C interlayer thickness of the FePt/B4C films is bigger than 3 nm, a stable value of grain size, coercivity and hardness is observed. The characterizations of the microstructure demonstrate that the diffusion of B and C atoms in the FePt layer is so finite that the multilayer structure of the FePt/B4C films is maintained after annealing at 500 degrees C for 30 min. The finite diffusion of B and C atoms is responsible for the FePt grain growth confinement, grain and layer separation and eventually induces the stable value mentioned above. The single composite films may find application in substituting the traditional three-layer structure commonly used in the present data storage technology.
机译：具有Fe / Pt两层结构和Fe / Pt / Fe夹心结构的FePt / B4C多层复合膜是通过磁控溅射随后在真空中退火制备的。当FePt / B4C膜的B4C层间厚度大于3nm时，观察到晶粒尺寸，矫顽力和硬度的稳定值。微观结构的表征表明，FePt层中B和C原子的扩散非常有限，以至于在500摄氏度下退火30分钟后，FePt / B4C膜的多层结构得以保持。 B和C原子的有限扩散是FePt晶粒生长的限制，晶粒和层分离的原因，并最终产生上述稳定值。单个复合膜可以代替现有的数据存储技术中常用的传统三层结构。

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