$M$–$H$ Loop Slope and Recording Properties of Perpendicular Media

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概要

• 論文の詳細を見る

• The slopes of the $M$–$H$ loop of perpendicular magnetic recording media were estimated by micro-magnetic simulation for various inter-grain exchange couplings, grain aspect ratios and inter-grain spacings. The slope of the $M$–$H$ loop depends not only on inter-grain exchange coupling but also on grain aspect ratio and inter-grain spacing. The simulation revealed that the required head field decreases with increasing inter-grain exchange coupling. The optimum value of the slope was slightly larger than 1.0 for compromising resolution and SNR by changing the inter-grain exchange coupling. The simulation results also indicated that the inter-grain spacing improves both resolution and SNR.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2004-09-15

著者

• Igarashi Masukazu

  Storage Technology Research Center Hitachi Ltd.

• NAKAMURA Atsushi

  Storage Media Systems Development Center, Matsushita Electric Industrial Co., Ltd.

• Hara Miki

  Storage Technology Research Center Hitachi Ltd.

• Igarashi Masukazu

  Storage Technology Research Center, Hitachi, Ltd., 1-280 Higashi-Koigakubo, Kokubunji, Tokyo 185-8601, Japan

• Sugita Yutaka

  Tohoku Institute of Technology, Taihaku-ku, Sendai 982-8577, Japan

• Hara Miki

  Storage Technology Research Center, Hitachi, Ltd., 1-280 Higashi-Koigakubo, Kokubunji, Tokyo 185-8601, Japan

関連論文

• High-Density Recording on a Dual-Layer Phase Change Disk Using Partial Response Maximum Likelihood Method
• High-Density Recording on a Dual-Layer Phase Change Disk Using Partial Response Maximum Likelihood Method
• $M$–$H$ Loop Slope and Recording Properties of Perpendicular Media

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