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The influence of film composition and annealing temperature on the microstructure and magnetic properties of FeCo thin films

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Abstract

FeCo alloy films with different Fe, Co compositions were prepared by magnetron sputtering and subsequent annealing at different temperatures. The experimental results revealed the importance of Fe, Co composition and T a on the microstructure and magnetic behavior for FeCo alloy films. With the increasing of Fe composition from 20 to 51%, the H c of FeCo films increased gradually from 95 to 239 Oe. Iron silicide will form in the interface between FeCo films and Si substrate at high Fe composition and high T a , which causes the decreasing of M s from 1480 to 652 emu/cc in Fe36Co64 films with increasing T a from 400 to 700 °C.

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Acknowledgements

The authors are grateful for financial support from the National Science Foundation of China (Grant Nos. 11274101 and 11674086).

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Authors and Affiliations

  1. Key Laboratory of Ferro- and Piezo-electric Materials and Devices, Faculty of Physics and Electronic Science, Hubei Collaborative Innovation Center for Advanced Organic Chemical, Hubei University, Wuhan, 430062, People’s Republic of China

    Fujun Yang, Jinjin Min, Jihui Li, Hongbo Chen, Degao Liu, Wanjun Li, Xiaoqin Chen & Changping Yang

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  1. Fujun Yang
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  2. Jinjin Min
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  3. Jihui Li
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  4. Hongbo Chen
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Correspondence to Xiaoqin Chen.

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Yang, F., Min, J., Li, J. et al. The influence of film composition and annealing temperature on the microstructure and magnetic properties of FeCo thin films. J Mater Sci: Mater Electron 28, 11733–11737 (2017). https://doi.org/10.1007/s10854-017-6977-4

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  • DOI: https://doi.org/10.1007/s10854-017-6977-4

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