Effects of Al substitution for Fe in Ba ferrite thin films

Authors
Feng, J Matsushita, N Murakoso, T Nakagawa, S Naoe, M
Citation
J. Feng et al., Effects of Al substitution for Fe in Ba ferrite thin films, J MAGN MAGN, 193(1-3), 1999, pp. 152-154
Citations number
4
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
193
Issue
1-3
Year of publication
1999
Pages
152 - 154
Database
ISI
SICI code
0304-8853(199903)193:1-3<152:EOASFF>2.0.ZU;2-6
Abstract
A magnetoplumbite type of hexagonal ferrite films with composition of BaAl2 Fe10O19 were deposited using Facing Targets Sputtering (FTS) apparatus on S iOx/Si wafers with Pt seed layers to promote the c-axis orientation perpend icular to the film plane. Then, the films were post-annealed at 900 degrees C in air. With the increase of Al content, saturation magnetization decrea sed, but coercivity and perpendicular squareness increased. The BaAl2Fe10O1 9 films with coercivity of 3.4 kOe and perpendicular squareness as high as 0.88 were prepared. (C) 1999 Elsevier Science B.V. All rights reserved.