Enhanced grain growth of magnetic granules in Co/oxide granular films

Authors
Ito, T Kitakami, O Shimada, Y Kamo, Y Kikuchi, S
Citation
T. Ito et al., Enhanced grain growth of magnetic granules in Co/oxide granular films, J MAGN MAGN, 235(1-3), 2001, pp. 165-168
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
235
Issue
1-3
Year of publication
2001
Pages
165 - 168
Database
ISI
SICI code
0304-8853(200110)235:1-3<165:EGGOMG>2.0.ZU;2-2
Abstract
We have investigated phase separation and grain growth of Co in Co-(Si, Sm, In, Si-In)-O granular films and found significant grain growth in Co-In-O at low annealing temperature. Using this non-magnetic matrix, the annealing temperature necessary for optimal granular structures can be reduced signi ficantly compared with conventional Co-Si-O and Co-Sm-O granular systems. A newly proposed phase separation model based on the bonding energy of const ituent elements qualitatively explains all the experimental results. (C) 20 01 Elsevier Science B.V. All rights reserved.