Magnetic Recording Measurements of Sputtered Media on Tape at an Areal Density of 14 ${\\rm Gb/\\in}^{2}$

Author

Berman, David ; Chembrolu, Venkatesh H. ; Topuria, Teya ; Matsunuma, Satoshi ; Inoue, Tetsutaro ; Doi, Tsugihiro ; Matsuu, T. ; Hashimoto, A. ; Hirata, K. ; Nakagawa, S.

Author_Institution

Almaden Res. Center, IBM, San Jose, CA, USA

Volume

45

Issue

10

fYear

2009

Firstpage

3584

Lastpage

3586

Abstract

Magnetic recording characteristics of a thin-film sputtered media on tape are studied with an HDD head in a high precision nano-positioning system. Signal spectrum roll-off slope is used to determine the effective magnetic spacing to be about 108 nm. The optimum broadband SNR at a linear density of 254 kbpi is 10 dB with a GMR read width of 0.1 mum. The estimated minimum track pitch, limited by side-track interference, is approximately 0.45 mum.

Keywords

hard discs; magnetic heads; magnetic multilayers; magnetic recording; magnetic tapes; tape recorders; Ru-CoPtCrSiO₂-C; effective magnetic spacing; hard disk heads; high precision nanopositioning system; magnetic recording measurements; magnetic tapes; minimum track pitch; noise figure 10 dB; side-track interference; signal spectrum roll-off slope; signal-noise ratio; thin-film sputtered media; Hard disk heads; magnetic recording; magnetic tape recording; sputtered tape media;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2021397

Filename

5257296