Perpendicular Magnetic Anisotropy in CoFeB/Pd Bilayers


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Fowley C., Decorde N., Oğuz K., Rode K., Kurt H. , Coey J. M. D.

IEEE TRANSACTIONS ON MAGNETICS, cilt.46, ss.2116-2118, 2010 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 46 Konu: 6
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1109/tmag.2010.2044374
  • Dergi Adı: IEEE TRANSACTIONS ON MAGNETICS
  • Sayfa Sayısı: ss.2116-2118

Özet

Perpendicular magnetic anisotropy is observed in ultrathin (0.6 nm) amorphous Co(40)Fe(40)B(20) when sputtered on an MgO (001) buffer layer and capped with Pd. The layers are superparamagnetic with a blocking temperature of similar to 230 K, below which they show an exponential temperature dependence of coercivity. Perpendicular magnetic anisotropy is observed in the as-deposited state and the mechanism is different from that of CoFeB/Pt, which requires postannealing. These ultrathin layers could be a model system for studies of electric field effects on magnetic anisotropy.