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The structural evolution in the growth process of FePt embedded in MgO matrix

  • Metals & corrosion
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Abstract

FePt nanoparticles were successfully embedded in a single-crystal MgO matrix using a pulse laser deposition method. The growth behaviors were well controlled and monitored in situ by the reflection high-energy electron diffraction. The FePt nanoparticles and the MgO matrix were grown in three-dimensional island-like and two-dimensional layered modes, respectively. The embedded FePt nanoparticles do not affect the epitaxial growth of MgO layer. The epitaxial relationship between the FePt and MgO is [200]FePt ‖ [100]MgO. Due to the lattice mismatch between the MgO and FePt, the edge dislocation is observed in the interior of the FePt particles. The study on the structural evolution in the growth process of FePt embedded in the MgO matrix has benefited for not only fundamental research but also the applications of FePt ultrahigh-density perpendicular magnetic recording.

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Acknowledgements

This work is supported by National Natural Science Foundation of China (No. 61574091), the Center of Advanced Materials and Devices and the Analytical and Testing Center of SJTU. We also thank Instrumental Analysis Center of SJTU for the analysis supports.

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Authors and Affiliations

  1. Key Laboratory for Thin Film and Microfabrication Technology of the Ministry of Education, School of Electronics, Information and Electrical Engineering, Shanghai Jiao Tong University, Dong Chuan Road No. 800, Shanghai, 200240, People’s Republic of China

    Jian Yu, Bin Li & Yafei Zhang

  2. Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, 621900, Sichuan, People’s Republic of China

    Tingting Xiao, Xuemin Wang & Weidong Wu

  3. School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621000, Sichuan, People’s Republic of China

    Jin Wang

  4. Institute of Material of Sciences and Engineering, Beijing University of Technology, Beijing, 100124, People’s Republic of China

    Yunhui Tang

  5. Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai, 200240, People’s Republic of China

    Weidong Wu

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  1. Jian Yu
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  2. Tingting Xiao
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  3. Jin Wang
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Correspondence to Weidong Wu or Yafei Zhang.

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Yu, J., Xiao, T., Wang, J. et al. The structural evolution in the growth process of FePt embedded in MgO matrix. J Mater Sci 55, 12305–12313 (2020). https://doi.org/10.1007/s10853-020-04795-0

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  • DOI: https://doi.org/10.1007/s10853-020-04795-0