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noise characteristics of Co-γFe_2O_3 perpendicular magnetic recording media

Journal of Magnetics Society of Japan Volume 21 Issue 4-2 Page 297-300
published_at 1997
Title
Co-γFe_2O_3垂直磁気記録媒体のノイズ特性
noise 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
perpendicular magnetic recording Co-γ-Fe_2O_3 CoO-Fe_3O_4 medium noise noise characteristics
Co-γ-Fe_2O_3 perpendicular magnetic recording thin-film disks were prepared by annealing a CoO-Fe_3O_4 single layer deposited on an NiO underlayer in air, at temperatures ranging from 260℃ to 350℃. The disks had no protective overcoat layers. The noise characteristics of Co-γ-Fe_2O_3 disks were measured by using a MIG-type ring head with a gap length of about 0.2μm in contact sliding use. By measurement of the dc erase noise spectrum and the recording density dependence of the medium noise, it was found that the disks show noise characteristics which is often seen in thin film media. At high recording densities of over 40 kFRPI, the disks show a higher S_<p-p>/N_<m,rms> than various longitudinal recording media now on the market.
Languages jpn
Resource Type journal article
Publishers 日本応用磁気学会
Date Issued 1997
File Version Not Applicable (or Unknown)
Access Rights metadata only access
Relations
[ISSN]0285-0192
[NCID]AN0031390X
info:doi/10.3379/jmsjmag.21.297
[isVersionOf] [URI]http://www.wdc-jp.com/msj/journal/index.html
Schools 大学院理工学研究科(工学)