TY - JOUR
T1 - A Study on the Magnetic Microstructure of CoCrTa/Cr Film Media, Using Rotational Hysteresis Loss Analysis
AU - Shimatsu, T.
AU - Mitarai, K.
AU - Kobayashi, M.
AU - Takahashi, M.
AU - Wakiyama, T.
PY - 1993/1/1
Y1 - 1993/1/1
N2 - Rotational hysteresis loss analysis was carried out for CoCrTa/Cr thin film media fabricated on glass substrate, to evaluate the influence of the microstructure on the media's magnetic properties. Hkgrain, defined as the magnetic field at which the rotational hysteresis loss vanishes, remained at almost a constant value of about 4.0 kOe, independent of the values of the coercive force. It is considered that Hkgrain almost corresponds to the magnitude of the uniaxial magnetic anisotropy field of the grains, and that the coercive force is mainly determined by the degree of intergranular magnetic coupling interaction. In all the films examined, Hc was mainly determined by the switching of magnetization, independently of the degree of intergranular coupling. Calculated results suggest a possibility that, in CoCrTa films consisting of large grains, the magnetization in each grain changes direction as a result of incoherent magnetization switching.
AB - Rotational hysteresis loss analysis was carried out for CoCrTa/Cr thin film media fabricated on glass substrate, to evaluate the influence of the microstructure on the media's magnetic properties. Hkgrain, defined as the magnetic field at which the rotational hysteresis loss vanishes, remained at almost a constant value of about 4.0 kOe, independent of the values of the coercive force. It is considered that Hkgrain almost corresponds to the magnitude of the uniaxial magnetic anisotropy field of the grains, and that the coercive force is mainly determined by the degree of intergranular magnetic coupling interaction. In all the films examined, Hc was mainly determined by the switching of magnetization, independently of the degree of intergranular coupling. Calculated results suggest a possibility that, in CoCrTa films consisting of large grains, the magnetization in each grain changes direction as a result of incoherent magnetization switching.
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U2 - 10.1109/TJMJ.1993.4565700
DO - 10.1109/TJMJ.1993.4565700
M3 - Article
AN - SCOPUS:84941464830
VL - 8
SP - 578
EP - 584
JO - IEEE translation journal on magnetics in Japan
JF - IEEE translation journal on magnetics in Japan
SN - 0882-4959
IS - 9
ER -