Characterization of magnetic tapes and substrates

Author

Weick, Brian L. ; Bhushan, Bharat

Author_Institution

Dept. of Mech. Eng., Ohio State Univ., Columbus, OH, USA

Volume

32

Issue

4

fYear

1996

fDate

7/1/1996 12:00:00 AM

Firstpage

3319

Lastpage

3322

Abstract

Ultra-thin advanced magnetic tape substrates are shown to have superior characteristics when compared to PET. In particular, PEN and ARAMID are viable alternatives to PET with elastic moduli that range from 4-5.4 GPa for PEN, and 10 GPa for ARAMID. Also, the ARAMID material is more isotropic than PET or PEN with a higher glass transition temperature of 277°C. Thermal and hygroscopic expansion measurements show that PEN and ARAMID are typically superior to PET. Characteristics of two developmental materials (a polybenzoxazole and a polyimide) are also presented

Keywords

elastic moduli; glass transition; magnetic recording; magnetic tapes; polymer films; substrates; swelling; thermal expansion; ARAMID; PEN; PET; elastic moduli; glass transition temperature; hygroscopic expansion; isotropy; magnetic tape; polybenzoxazole; polyimide; thermal expansion; ultra-thin substrate; Elasticity; Magnetic anisotropy; Magnetic films; Magnetic materials; Perpendicular magnetic anisotropy; Polyimides; Positron emission tomography; Substrates; Thermal expansion; Viscosity;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.508397

Filename

508397