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Microstructural Studies of L10-FePt Thin Films with High Coercivity Fabricated at Low Deposition Temperatures

  • SYMPOSIUM - Phase Transformations in Magnetic Materials
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The infuence of ultrathin nonmagnetic Ag layers on the formation of the ordered fct-L10 PtFe phase and their magnetic properties have been studied, when the thin FePt .lms were deposited on MgO (100) single-crystal substrates. Epitaxial growth of the FePt (001) .lms was observed at the deposition temperature of 400 °C. With ultrathin Ag intermediate layers deposited between FePt layers, the surface morphology changed from the interconnection network to isolated-island character. The perpendicular coercivity of the FePt .lm dramatically increased from 6.5 to 32.5 kOe. The formation mechanism of the isolated island morphology of FePt thin .lms is discussed.

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Authors and Affiliations

  1. Data Storage Institute, Singapore, 117608, Singapore

    Z. L. ZHAO

  2. Department of Material Sciences & Engineering, National University of Singapore, Singapore, 119260, Singapore

    Z. L. ZHAO

  3. Heraeus Singapore Pte Ltd., Singapore, Singapore

    Z. L. ZHAO

  4. Department of Material Sciences & Engineering, National University of Singapore, Singapore, 119260, Singapore

    J. DING, Y. LI & G. M. CHOW

  5. Data Storage Institute, 5 Engineering Drive 1, DSI Building, Singapore, 117608, Singapore

    J. S. CHEN

  6. Department of Electrical and Computer Engineering, The Center for Micromagnetics and Information Technologies (MINT), University of Minnesota, MN, 55455., Minneapolis, USA

    J. P. WANG

Authors
  1. Z. L. ZHAO
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  2. J. DING
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  3. Y. LI
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  4. G. M. CHOW
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  5. J. S. CHEN
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  6. J. P. WANG
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Correspondence to J. DING.

Additional information

This article is based on a presentation made in the symposium entitled “Phase Transformations in Magnetic Materials,” which occurred during the TMS Annual Meeting, March 12–16, 2006, in San Antonio, Texas, under the auspices of the Joint TMS-MPMD and ASMI-MSCTS Phase Transformations Committee

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ZHAO, Z.L., DING, J., LI, Y. et al. Microstructural Studies of L10-FePt Thin Films with High Coercivity Fabricated at Low Deposition Temperatures. Metall Mater Trans A 38, 811–814 (2007). https://doi.org/10.1007/s11661-007-9100-2

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  • DOI: https://doi.org/10.1007/s11661-007-9100-2

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