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Microstructure and magnetic properties of FePt:C nanocomposite films with low ordering temperature

  • H. Wang (a1), F. J. Yang (a1), H. B. Wang (a1), S. X. Xue (a1), Y. Gao (a1), Z. B. Huang (a1), C. P. Yang (a1), M. F. Chiah (a2), N. Ke (a2), W. Y. Cheung (a2), S. P. Wong (a2) and Q. Li (a3)...

Abstract

FePt:C films were prepared by filtered vacuum arc deposition. A strong dependence of coercivity and ordering of the face-central tetragonal structure on both C concentration and annealing temperature was observed. With C concentration of 21%, the sample with a coercivity of 5.7 kOe was obtained when annealing temperature was only 350 °C. Transmission electron microscope observations revealed that FePt grains with an average size of 4.1 nm were embedded in C and appeared to be well isolated.

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Microstructure and magnetic properties of FePt:C nanocomposite films with low ordering temperature

  • H. Wang (a1), F. J. Yang (a1), H. B. Wang (a1), S. X. Xue (a1), Y. Gao (a1), Z. B. Huang (a1), C. P. Yang (a1), M. F. Chiah (a2), N. Ke (a2), W. Y. Cheung (a2), S. P. Wong (a2) and Q. Li (a3)...

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