Effects of Pt seed layer and Ar pressure on magnetic and structural properties of sputtered CoNi/Pt multilayers

Author

Meng, Q. ; de Haan, P. ; Van Drent, W.P. ; Lodder, J.C. ; Popma, Th J A

Author_Institution

MESA Res. Inst., Twente Univ., Enschede, Netherlands

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

4064

Lastpage

4066

Abstract

CoNi/Pt multilayers were prepared by magnetron sputtering using Ar gas. The effects of the Pt seed layer and the Ar sputtering pressure on magnetic and structural properties are investigated. Microstructures of the multilayers were analysed using XRD and TEM. It was found that perpendicular magnetic anisotropy and coercivity increase with an increase in either the thickness of the Pt seed layer or Ar pressure. The causes of the increases in perpendicular anisotropy and coercivity are discussed in relation to the interface roughness, the curvature of layers and the columnar structures

Keywords

X-ray diffraction; cobalt alloys; coercive force; ferromagnetic materials; interface structure; magnetic domain walls; magnetic multilayers; nickel alloys; perpendicular magnetic anisotropy; platinum; sputtered coatings; transmission electron microscopy; Ar; Ar pressure; Ar sputtering pressure; CoNi-Pt; Pt seed layer; TEM; XRD; coercivity; columnar structures; domain wall pinning; interface roughness; layer curvature; magnetic properties; magnetooptical recording; magnetron sputtering; microstructures; perpendicular magnetic anisotropy; sputtered CoNi/Pt multilayers; structural properties; thickness; Anisotropic magnetoresistance; Argon; Coercive force; Magnetic analysis; Magnetic multilayers; Magnetic properties; Microstructure; Perpendicular magnetic anisotropy; Sputtering; X-ray scattering;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.539264

Filename

539264