Title :
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
fDate :
9/1/1996 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
