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Recording characteristics of Co-γFe_2O_3 perpendicular magnetic recording media

Journal of Magnetics Society of Japan Volume 20 Issue 2 Page 137-140
published_at 1996
Title
Co-γFe_2O_3垂直磁気記録媒体の記録特性
Recording characteristics of Co-γFe_2O_3 perpendicular magnetic recording media
Creators 安藤 貴之
Creators Yamamoto Setsuo
Creators Kurisu Hiroki
Creators 松浦 満
Creators 土井 孝紀
Creators 田万里 耕作
Creator Keywords
Co-γFe_2O_3 perpendicular recording perpen- dicular magnetic anisotropy recording media contact re cording
The pass-wear durability and recording characteristics of Co-γFe_2O_3 perpendicular magnetic recording thin-film disks were measured by using a MIG-type ring head with a gap length of about 0.2μm in contact sliding use. Co-γFe_2O_3 perpendicular magnetic anisotropy films were pre- pared by annealing CoO/Fe_3O_4 multilayers deposited onto an NiO underlayer in air at 280-350℃ The Co-γFe_2O_3 perpendicular hard disk had no protective overcoat layers. The head wear was drastically improved by introducing a liquid lubricant. Reproduction demagnetization did not occur, and no damage or scratches were found after more than eighteen million passes. A D_<50> of 180 kFRPI and a low-density reproduced voltage of 143 nV_<p-p>/{turu-pm- (m/s)) were obtained for a Co-γFe_2O_3 disk with an optimized film thickness and perpendicular coercivity. It is con- eluded that the Co-γFe_2O_3 perpendicular disks are suitable for ultra-high density recording media used in contact re- cording without an overcoat layer.
Languages jpn
Resource Type journal article
Publishers 日本応用磁気学会
Date Issued 1996
File Version Not Applicable (or Unknown)
Access Rights metadata only access
Relations
[ISSN]0285-0192
[NCID]AN0031390X
https://doi.org/10.3379/jmsjmag.20.137
[isPartOf] [URI]http://www.wdc-jp.com/msj/journal/index.html
Schools 大学院理工学研究科(工学)