Carbon Overcoat Oxidation in Heat-Assisted Magnetic Recording

Author

Pathem, Bala Krishna ; Guo, Xing-Cai ; Rose, Franck ; Wang, Nan ; Komvopoulos, K. ; Schreck, Erhard ; Marchon, Bruno

Author_Institution

San Jose Res. Center, HGST, San Jose, CA, USA

Volume

49

Issue

7

fYear

2013

fDate

Jul-13

Firstpage

3721

Lastpage

3724

Abstract

Due to the ever increasing demand for higher storage capacity in disk drives, novel techniques to read and write information, such as heat-assisted magnetic recording are being developed. However, the recording temperatures impact not only the media but also the carbon overcoat that is used to protect both the media and writing head. In this paper, we discuss the effect of thermal annealing on the rate of carbon erosion on overcoats deposited using two different techniques, viz. filtered-cathodic arc and plasma-enhanced chemical vapor deposition.

Keywords

annealing; carbon; oxidation; plasma CVD; protective coatings; thermomagnetic recording; C; carbon erosion rate; carbon overcoat oxidation; disk drives; filtered-cathodic arc; heat-assisted magnetic recording; plasma-enhanced chemical vapor deposition; recording temperatures; storage capacity; thermal annealing effect; writing head; Annealing; Carbon; Magnetic heads; Media; Oxidation; Temperature measurement; Thickness measurement; Carbon overcoat; Raman; graphitization; head-disk interface; heat-assisted magnetic recording; oxidation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2012.2236645

Filename

6559145