TY - JOUR
T1 - Recording performance of CoCrPt-(Ta, B)/TiCr perpendicular recording media
AU - Uwazumi, H.
AU - Shimatsu, T.
AU - Sakai, Y.
AU - Otsuki, A.
AU - Watanabe, I.
AU - Muraoka, Hiroaki
AU - Nakamura, Y.
N1 - Funding Information:
Manuscript received October 13, 2000. This work was supported in part by ASET and SRC. H. Uwazumi, Y. Sakai and A. Otsuki are with Fuji Electric Co., Ltd., 4-18-1 Tsukama, Matsumoto, Nagano, 390-0821 Japan (e-mail: uwazumi-hi-royuki@fujielectric.co.jp). T. Shimatsu, I. Watanabe, H. Muraoka and Y. Nakamura are with the Research Institute of Electrical Communication, Tohoku University, Sendai, Miyagi, 980-8577 Japan (e-mail: shimatsu@riec.tohoku.ac.jp). Publisher Item Identifier S 0018-9464(01)05797-1.
PY - 2001/7
Y1 - 2001/7
N2 - The magnetic properties, microstructure and the recording performances of CoCrPt-(Ta, B)/TiCr perpendicular magnetic recording media were studied in conjunction with the effect of thermal agitation. The addition of Ta or B to CoCrPt media significantly improves its low noise performance, mainly due to the reduction of grain size and intergranular magnetic interactions. However, adding Ta or B also reduces the value of perpendicular magnetic anisotropy, Ku, especially in the initial growth layer, resulting in the degradation of thermal stability. In order to achieve high thermal stability without degrading the low noise performance of these media, an Mr/Ms value of nearly 1.0 is required. This may be achieved by suppressing of the reduction of Ku and the reducing intergranular magnetic interactions, whilst maintaining their small grain size.
AB - The magnetic properties, microstructure and the recording performances of CoCrPt-(Ta, B)/TiCr perpendicular magnetic recording media were studied in conjunction with the effect of thermal agitation. The addition of Ta or B to CoCrPt media significantly improves its low noise performance, mainly due to the reduction of grain size and intergranular magnetic interactions. However, adding Ta or B also reduces the value of perpendicular magnetic anisotropy, Ku, especially in the initial growth layer, resulting in the degradation of thermal stability. In order to achieve high thermal stability without degrading the low noise performance of these media, an Mr/Ms value of nearly 1.0 is required. This may be achieved by suppressing of the reduction of Ku and the reducing intergranular magnetic interactions, whilst maintaining their small grain size.
KW - CoCrPt-(Ta, B)
KW - Media noise performances
KW - Microstructure
KW - Perpendicular recording media
KW - Thermal agitation
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U2 - 10.1109/20.950911
DO - 10.1109/20.950911
M3 - Conference article
AN - SCOPUS:0035386205
VL - 37
SP - 1595
EP - 1598
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
SN - 0018-9464
IS - 4 I
T2 - 8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag)
Y2 - 7 January 2001 through 11 January 2001
ER -