Anomalous hysteresis properties of iron films deposited on liquid surfaces

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  • Quan-Lin Ye
    Zhejiang University Department of Physics, , Hangzhou 310027, People’s Republic of China
  • Chun-Mu Feng
    Zhejiang University Test and Analysis Center, , Hangzhou 310028, People’s Republic of China
  • Xiao-Jun Xu
    Zhejiang University Department of Physics, , Hangzhou 310027, People’s Republic of China
  • Jin-Sheng Jin
    Zhejiang University Department of Physics, , Hangzhou 310027, People’s Republic of China
  • A-Gen Xia
    Zhejiang University Department of Physics, , Hangzhou 310027, People’s Republic of China
  • Gao-Xiang Ye
    Zhejiang University Department of Physics, , Hangzhou 310027, People’s Republic of China

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<jats:p>A nearly free sustained iron film system, deposited on silicone oil surfaces by vapor-phase deposition method, has been fabricated and its crystal structure as well as magnetic properties has been studied. Both the temperature-dependent coercivity Hc(T) and exchange anisotropy field HE(T) of the iron films possess a maximum peak around the critical temperature Tcrit=10–15 and 4K, respectively. Our experimental results show that the anomalous hysteresis properties mainly result from the oxide surfaces of the films with spin-glass-like phase below freezing temperature Tf=30–50K.</jats:p>

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