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The switching field distributions (SFD) of CoPtCr-SiO2 perpendicular media as a function of Pt content were characterized by subtracting the effect of thermal agitation, and discussed in relation to the microstructure. DC demagnetizing (DCD) magnetization curves and minor dc demagnetizing (M-DCD) magnetization curves were measured at applied field sweep rates of ~10 Oe/s and ~108 Oe/s. We estimated...
The authors measured the remanent magnetization curves for a series of CoPtCr-SiO2 perpendicular media with various thickness at low and high applied field sweep rates. They discussed the "intrinsic" switching field distribution (SFD) caused by the variations in the grain-to-grain switching field. Magnetic analysis revealed the values of the saturation magnetization and the uniaxial magnetic...
In the present study, the values of Ms, Ku2 and the first order uniaxial magnetic anisotropy energy term, Kul, to utilize the Ku2 effect on the thermal stability whilst simultaneously achieving a good writability. The resulting ratio of DeltaE to Hs is discussed and compared to media without a Ku2 term.
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