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