Interactions and reversal processes in CoCrTa/CoCrTaPt thin films

Author

Morales, M.P. ; O´Grady, K. ; Zhang, B. ; Bennett, Wayne R. ; Rauch, Gary C.

Author_Institution

Magnet. Mater. Res. Group, UCNW, Bangor, IL, USA

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

3593

Lastpage

3595

Abstract

Switching behaviour and intergranular interactions have been studied in CoCrTa/CoCrTaPt double layer thin films sputtered on polished and textured substrates. From the combination of a low noise and a high coercivity alloy, a high quality thin film has been obtained with very good properties for high density magnetic recording media. Coercivities higher than 2 kOe, uniform switching and a reduction in the intergranular exchange coupling have been observed from the hysteresis loops, remanence curves and ΔM(H)) technique. Also, it is shown that circumferential texturing of the substrate results in preferential magnetic properties along the texture lines such that there is an apparent reduction in interactions perpendicular to the texture direction

Keywords

chromium alloys; cobalt alloys; coercive force; exchange interactions (electron); ferromagnetic materials; grain growth; magnetic anisotropy; magnetic hysteresis; magnetic multilayers; magnetic recording; magnetic recording noise; magnetic switching; platinum alloys; remanence; sputtered coatings; tantalum alloys; texture; CoCrTa-CoCrTaPt; CoCrTa/CoCrTaPt double layer thin films; circumferential texturing; coercivities; high coercivity alloy; high density magnetic recording media; high quality thin film; hysteresis loops; intergranular exchange coupling; intergranular interactions; low noise; polished substrates; preferential magnetic properties; remanence curves; reversal processes; sputtered films; switching behaviour; texture lines; textured substrates; uniform switching; Coercive force; Magnetic films; Magnetic hysteresis; Magnetic noise; Magnetic properties; Magnetic recording; Remanence; Sputtering; Substrates; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.538700

Filename

538700