Exchange-coupling behavior in nanostructured FePt/Fe bilayer films | Zendy

Y. Liu | Zendy; D. J. Sellmyer | Zendy

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Exchange-coupling behavior in nanostructured FePt/Fe bilayer films

Author(s) -

Y. Liu,

D. J. Sellmyer

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4943414

Subject(s) - bilayer , nucleation , hysteresis , materials science , sputtering , coupling (piping) , magnetic hysteresis , condensed matter physics , nanostructure , diffraction , field (mathematics) , magnetometer , sputter deposition , magnetic field , thin film , chemical physics , nanotechnology , metallurgy , magnetization , chemistry , thermodynamics , optics , physics , membrane , biochemistry , mathematics , quantum mechanics , pure mathematics

Different thicknesses of FePt/Fe bilayer films are deposited on (001) MgO substrates by sputtering Fe and Pt targets with in-situ heating at 830OC. X-ray diffraction indicates a complete alignment of the FePt [001] axis with MgO [001] axis. The nucleation field Hn is estimated from hysteresis loops measured using a SQUID magnetometer. A FePt/Fe bilayer model is proposed to calculate the nucleation field Hn and compared with the experimental data. The model can explain experimental trends and gives useful predictions for nanostructure synthesis and further experiment

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