STUDY ON RECORDING CHARACTERISTICS OF MULTILAYERED THIN FILM MAGNETIC RECORDING MEDIA

多层薄膜磁记录介质记录特性研究

• 批准号: 13650388
• 负责人: HOTSUKIYO Jiro
• 金额: $ 2.05万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650388/
• 关键词: Magnetic recording; Perpendicular recording; Magnetic recording medium; Superlattice film; Magnetic recording medium noise; Magnetic recording theory; Magnetic recording head; GMR head; MRヘッド

1. Analytical method for calculation of read-write characteristics of perpendicular magnetic recording was investigated.2. Theory of recording medium noise from magnetic clusters and estimation method of the noise sources were investigated.3. Thin Pd/Si seedlayer for Co/Pd multilayer perpendicular magnetic recording media was developed. The addition of N_2 to Ar gas during the Pd upper-seedlayer deposition and the post-annealing in preparing the Pd/Si seedlayer were effective for decreasing the magnitude of intergranular exchange coupling without serious deterioration of the perpendicular magnetic anisotropy, which resulted in both an increase in the read-write resolution and a decrease in the medium noise.

1.研究了垂直磁记录读写特性的解析计算方法.研究了磁团簇记录介质噪声的理论和噪声源的估计方法.研制了用于Co/Pd多层垂直磁记录介质的薄Pd/Si种子层。在Pd/Si种子层制备过程中加入N_2和Ar气体，以及在制备Pd/Si种子层过程中进行后退火，在不严重破坏垂直磁各向异性的情况下，有效地降低了晶间交换耦合的大小，从而提高了读写分辨率，降低了介质噪声。

项目成果

Toru Asahi, et al.: "Preparation of Co/Pd multilayered perpendicular magnetic recording media with carbon under layer."Journal of Magnetics Society of Japan. 25-4-2. 575-578 (2001)

Toru Asahi 等人：“带有碳底层的 Co/Pd 多层垂直磁记录介质的制备”。日本磁学学会杂志。

相沢はる奈, 鷹栖幸子, 品川公成, 法橋滋郎: "ヘッド/2層膜垂直磁気記録媒体系における記録層内の反磁界"日本応用磁気学会誌. 27・4. 257-260 (2003)

Haruna Aizawa、Sachiko Takasu、Kiminari Shinakawa、Shigeru Hohashi：“磁头/双层垂直磁记录介质系统中记录层的去磁场”日本应用磁学学会杂志 27・4（2003 年）。 ）

川治純, 朝日透, 田中睦美, 木村公治, 本間敬之, 逢坂哲彌: "電気化学的手法を用いた垂直二層膜媒体用下地層の作製"電子情報通信学会技術報告. MR2003-28. 7-11 (2004)

Jun Kawaji、Toru Asahi、Mutsumi Tanaka、Koji Kimura、Noriyuki Honma、Tetsuya Osaka：“使用电化学方法制备垂直双层介质的底层” IEICE 技术报告。

川上勝他: "MFMによる垂直磁気記録媒体の磁化状態の解析手法の検討"日本応用磁気学会誌. 25,4-2号. 571-574 (2001)

Masaru Kawakami等：“使用MFM的垂直磁记录介质的磁化状态的分析方法的研究”日本应用磁学学会杂志25，No.471-574(2001)。

Takehiro Onoue et al.: "Improvement of signal to noise ratio for Co/Pd multilayer perpendicular magnetic recording media by the addition of an underlayer."Journal of Magnetism and Magnetic Materials. 235. 40-44 (2001)

Takehiro Onoue 等人：“通过添加底层来提高 Co/Pd 多层垂直磁记录介质的信噪比。”《磁性与磁性材料杂志》。