Magnetic properties, microstructure, and read-write performance of COSiO2-Pt granular multilayer perpendicular recording media

被引：6

作者：

Kawada, Y ^{[1
]}

Ueno, Y ^{[1
]}

Shibata, K ^{[1
]}

机构：

[1] Fuji Elect Adv Technol Co Ltd, Device Technol Lab, Nagano 3900821, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2004年 / 40卷 / 04期

关键词：

CoSiO2-Pt multilayer; perpendicular magnetic recording; SiO2; thin Pt layer;

D O I：

10.1109/TMAG.2004.832503

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Co layers with added SiO2 were applied to Co-Pt multilayer media to enhance the grain isolation and reduce the media noise. Typical magnetic properties of the media with 0.29 mn Co layer thickness and 0.12 nm Pt layer thickness were the coercivity H-c. = 6.2 kOe, the saturation magnetization M-s = 540 emu/cm(3), squareness S = 1.0, the slope parameter alpha = 1.6, the nucleation field H-n = -2.5 kOe, and the perpendicular anisotropy energy K-u = 6.0 X 10(6) erg/cm(3). Average grain size and grain boundary of that media were 6.6 nm in diameter and about 2 nm in width, respectively. The media exhibited both excellent recording performances and good thermal stability.

引用

页码：2489 / 2491

页数：3

共 7 条

[1] Co-Pt multilayers perpendicular magnetic recording media with thin Pt layer and high perpendicular anisotropy [J].

Kawada, Y ;

Ueno, Y ;

Shibata, K .

IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (05) :2045-2047

[2] Perpendicular magnetic recording media based on Co-Pd multilayer with granular seed layer [J].

Matsunuma, S ;

Yano, A ;

Fujita, E ;

Onuma, T ;

Takayama, T ;

Ota, N .

IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (04) :1622-1626

[3] Magnetic properties and noise characteristics of Co/Pd multilayer perpendicular magnetic recording media [J].

Ohmori, H ;

Maesaka, A .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2001, 235 (1-3) :45-52

[4] Microstructure and magnetic properties of CoPtCr-SiO2 perpendicular recording media [J].

Oikawa, T ;

Nakamura, M ;

Uwazumi, H ;

Shimatsu, T ;

Muraoka, H ;

Nakamura, Y .

IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (05) :1976-1978

[5] Thermal agitation of magnetization and recording performance of Co(B)-Pd superlattice perpendicular recording media [J].

Shimatsu, T ;

Terakawa, M ;

Watanabe, I ;

Muraoka, H ;

Nakamura, Y .

IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (05) :2048-2050

[6]

SUZUKI M, 2002, J MAGN SOC JPN S1, V18, P451

[7] Noise origin in Co/Pd multilayer media for perpendicular magnetic recording [J].

Wu, LJ ;

Yanase, S ;

Honda, N ;

Ouchi, K .

IEEE TRANSACTIONS ON MAGNETICS, 1997, 33 (05) :3094-3096

← 1 →