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Composition dependent phase transformation of Pt0.5−x Mn0.5+x from A1 to L10 phase

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Abstract

Pt0.5−x Mn0.5+x films were prepared by sputtering deposition of Pt foil and Mn target to study the order-disorder transition from a thermodynamic metastable fcc (A1) phase to L10 phase. Both Differential Scanning Calorimetry and High Temperature X-Ray Diffraction studies showed the phase transformation from fcc to the L10 structure for the Pt0.50Mn0.50 and Pt0.40Mn0.60 samples but along completely different kinetic paths. A composition dependent phase transformation was observed by comprehensive Differential Scanning Calorimetry studies on a series of Pt0.5−x Mn0.5+x samples. The changes of the lattice parameter and the cell volume of L10 Pt0.5−x Mn0.5+x as a function of composition suggest that the anti-site is not the dominant point defect for L10 Pt0.5−x Mn0.5+x .

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Authors and Affiliations

  1. MKS Instruments, Inc., 90 Industrial Way, Wilmington, MA, 01887, USA

    C.-X. Ji

  2. Materials and Engineering Physics Program, Ames Laboratory, Iowa State University, Ames, IA, 50011, USA

    M. L. Huang & M. J. Kramer

  3. Materials Science Program, University of Wisconsin-Madison, 1509 University Avenue, Madison, WI, 53706, USA

    C. Zhang, K. S. Wu, Y. Yang & Y. A. Chang

Authors
  1. C.-X. Ji
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  2. M. L. Huang
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  3. M. J. Kramer
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  4. C. Zhang
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  5. K. S. Wu
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  6. Y. Yang
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  7. Y. A. Chang
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Correspondence to C.-X. Ji.

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Ji, CX., Huang, M.L., Kramer, M.J. et al. Composition dependent phase transformation of Pt0.5−x Mn0.5+x from A1 to L10 phase. Appl. Phys. A 99, 471–475 (2010). https://doi.org/10.1007/s00339-010-5557-8

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  • DOI: https://doi.org/10.1007/s00339-010-5557-8

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