Lowering of ordering temperature for L100-FePt in Fe/Pt multilayers | Zendy

Li Bao-He | Zendy; Hwang Pol | Zendy; Yang Tao | Zendy; Zhai Zhong-Hai | Zendy; Fengwu Zhu | Zendy

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Lowering of ordering temperature for L100-FePt in Fe/Pt multilayers

Author(s) -

Li Bao-He,

Hwang Pol,

Yang Tao,

Zhai Zhong-Hai,

Fengwu Zhu

Publication year - 2005

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.54.1836

Subject(s) - materials science , annealing (glass) , coercivity , sputter deposition , condensed matter physics , thin film , atmospheric temperature range , sputtering , cavity magnetron , composite material , nanotechnology , thermodynamics , physics

Fe/Pt multilayers and FePt thin films were prepared by DC magnetron sputtering. The as-prepared samples were subjected to vacuum annealing at temperatures in t he range of 300—550℃. The multilayered structure is an effective approach fo r reducing the ordering temperature of FePt. The ordering parameter S is evaluated to be 06, and correspondingly the coercivity is evaluated to be 501kA/m in Fe(15nm)/Pt(15nm)1313 multilayers annealed at 350℃ for 20min. Relatively low ordering temperature for the multilayer is due to the e xtra driving force of ordering process caused by the vanishing of the multilayer interface at annealing.

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