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Interdiffusion and Interaction Associated Microstructure Evolution Between Fe-Co Thin Film and Al2O3 Substrate
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1.Zynergy Technology Incorporation, Fremont 94538, USA;2.Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China

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Fund Project:

National Natural Science Foundation of China (51771024)

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    Abstract:

    By advanced analytical transmission electron microscope, an unexpected interdiffusion between magnetron sputtered Fe-Co thin film and Al2O3 substrate was detected and systematically investigated in this study. Results show that a new phase of spinel FeAl2O4 forms, leading to the formation of interfacial layer. Detailed microstructure characterization reveals the interdiffusion associated with incommensurate structure formation near the interface in the Fe-Co thin film. The interdiffusion and accompanied new phase formation between the Fe-Co thin film and sapphire substrate are detected, and the associated microstructure evolution at the interfacial region is discussed, which may considerably influence the thin film magnetic properties.

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[Li Zhipeng, Ou Dingrong, Ye Fei. Interdiffusion and Interaction Associated Microstructure Evolution Between Fe-Co Thin Film and Al2O3 Substrate[J]. Rare Metal Materials and Engineering,2021,50(5):1556~1562.]
DOI:10.12442/j. issn.1002-185X.20200091

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History
  • Received:February 15,2020
  • Revised:February 22,2020
  • Adopted:March 05,2020
  • Online: July 19,2021
  • Published: May 25,2021