Open AccessLowering of ordering temperature for L100-FePt in Fe/Pt multilayers
Author(s) -
Baohe Li,
Hwang Pol,
Tao Yang,
Zhai Zhong-Hai,
Fangyuan Zhu
Publication year - 2005
Publication title -
wuli xuebao
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.