Perpendicular Recording Media by Means of Anodic Oxidation

通过阳极氧化的垂直记录介质

• 批准号: 61850051
• 负责人: TSUYA Noboru
• 金额: $ 5.06万
• 依托单位: Hosei university
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61850051/
• 关键词: Alumite; Disc; Pore; Perpendicular; Nodic; Oxidation; ディスク; 磁気媒体; メスバウアー; 異方性

Details of method are given for measurements of perpendicular magnetic alumite discs obtained by an aid of anodization with the additional new process named "pore widening" which was effective to control the coersive force. The electro-deposited fine iron needles were in single crystalline state. The perpendicular orientation of magnetization was confirmed. The magnetic recording characteristics of rigid discs indicated satisfactor results as perpendicular recording medium. The recording characteristics of 3.k and 5.25 inch rigid discs were evaluated. A recording density D_<50> of 50 KBPI was attained for the disc with a media thickness 1.5 <micrn>m. The environmental test under an atomsphere of 40 ゜C, 90% R.H. over 1000 hr affirmed the stability of the alumite disc with 250A SiO2 overcoat. The proposed perpendicular media by anodic oxidation method show a high potential for practical use because of its mass productivity.

本文详细介绍了用阳极氧化法测量垂直磁性铝土圆盘的方法，并附加了一种新的方法，称为“扩孔”，该方法有效地控制了强制力。电沉积的细铁针呈单晶状态。确定了垂直磁化方向。作为垂直记录介质，刚性磁盘的磁记录特性令人满意。3.记录特性评估K和5.25英寸硬盘。介质厚度为1.5 <micrn>m的光盘，记录密度D_<50>为50 KBPI。在40℃、90% rh、超过1000小时的环境测试中，确认了涂有250A SiO2涂层的铝板的稳定性。所提出的垂直介质阳极氧化法具有较高的生产效率，具有较高的实际应用潜力。

项目成果

N.Tsuya: IEEE.Trans.Magn.MAG-22. MAG-22. 1140-1145 (1986)

N.Tsuya：IEEE.Trans.Magn.MAG-22。

N.Tsuya: IEEE.Trans.Magn.(1987)

N.Tsuya：IEEE.Trans.Magn.(1987)

津屋昇: 電子通信学会 磁気記録研究会. MR-86-09. 33-37 (1986)

Noboru Tsuya：磁记录研究小组，电子与通信工程师协会 MR-86-09 (1986)。

N.Tsuya: IEEE.Trans.Magn.MAG-23. MAG-23. (1987)

N.Tsuya：IEEE.Trans.Magn.MAG-23。

N.Tsuya: IEEE Trans.Magn.MAG-23. VOL.5. 3 (1987)

N.Tsuya：IEEE Trans.Magn.MAG-23。