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Study of Structure, Magnetic and Electrical Properties of Co _{2} MnSi Heusler Alloy Thin Films Onto n-Si Substrates

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4 Author(s)
Nahid, M.A.I. ; Dept. of Appl. Phys., Tohoku Univ., Sendai, Japan ; Oogane, Mikihiko ; Naganuma, Hiroshi ; Ando, Yasuo

The structural, magnetic and electrical properties of Co2MnSi thin films grown onto n-doped Si(110) and n-Si(100) substrates were studied. The structure and magnetic properties of Co2MnSi thin films were found to depend strongly on the annealing temperature (T A). At T A = 275-350degC, the Co2MnSi films were of B2 phase with lang100rang texture and possessed magnetic moment on both substrates. The saturation magnetization (M S) of Co2MnSi thin films was found maximum at T A = 300degC. Chemical reaction might occur between Co2MnSi and Si above T A = 350degC which caused nearly zero M S value. The current-voltage (I-V) characteristic of the Co2MnSi thin films onto n-Si substrates was obtained linear suggesting the contacts were ohmic nature.

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Magnetics, IEEE Transactions on  (Volume:45 ,  Issue: 10 )