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Crystal structure and magnetic properties of FexPd1−x thin films annealed at 550 °C

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Abstract

Polycrystalline FexPd1−x (x = 37–64 at.%) films with thicknesses of 47 ± 2 nm were prepared by dc magnetron sputtering on quartz glass substrates and subsequent annealing at 550 °C for 3 h. The evolution of crystal structure and magnetic properties with different Fe concentrations were investigated. For the Pd-rich FePd films, the A1 disordered phase and soft magnetic properties were found. The Fe-rich FePd films are more favorable to the formation of an ordered L10 phase. For Fe concentration of 51 at.%, the sample exhibits the highest coercivity, magnetic energy product and remanence ratio at room temperature, corresponding to 3.5 kOe, 17.6 MGOe and 0.94, respectively, and the coercivity increases to ~4.3 kOe at 120 K. The disorder-order transition temperature is evidently reduced to 550 °C and magnetic properties are improved in this work. These FePd films have shown promise for application as high-density magnetic recording medium.

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Acknowledgements

This work is supported by the Guangxi Natural Science Foundation (2016GXNSFAA380030, 2013GXNSFBA019242), Innovation Project of GUET Graduate Education (YJCXS201564) and the National Natural Science Foundation of China (51461012, 51261004).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China

    T. Liu, L. Ma, S. Q. Zhao, D. D. Ma, L. Li, G. Cheng & G. H. Rao

  2. Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin, 541004, China

    L. Ma, L. Li, G. Cheng & G. H. Rao

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  1. T. Liu
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  2. L. Ma
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  3. S. Q. Zhao
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  4. D. D. Ma
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  7. G. H. Rao
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Correspondence to L. Ma or G. H. Rao.

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Liu, T., Ma, L., Zhao, S.Q. et al. Crystal structure and magnetic properties of FexPd1−x thin films annealed at 550 °C. J Mater Sci: Mater Electron 28, 3616–3620 (2017). https://doi.org/10.1007/s10854-016-5963-6

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  • DOI: https://doi.org/10.1007/s10854-016-5963-6

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