The effect of Ta on structure and magnetic properties in Fe-N films

Authors
Ma, B Wei, FL Liu, XX Xiao, CT Yang, Z
Citation
B. Ma et al., The effect of Ta on structure and magnetic properties in Fe-N films, MAT SCI E B, 57(2), 1999, pp. 97-101
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
ISSN journal
09215107 → ACNP
Volume
57
Issue
2
Year of publication
1999
Pages
97 - 101
Database
ISI
SICI code
0921-5107(19990101)57:2<97:TEOTOS>2.0.ZU;2-J
Abstract
Microstructure and magnetic properties of Fe-Ta-N alloy films near the euta tic composition were studied. The four systematic alloy films with differen t Ta content were prepared by reactive sputtering. The dependence of struct ures and magnetic properties on Ta and annealing were investigated by VSM a nd X-ray diffraction. It is found that Ta atoms replace Fe in alpha-Fe latt ice and have strong affinity for nitrogen, which inhibits the formation of gamma-Fe4N phase in Fe-Ta-N films. The TaN phase precipitates in grain boun daries and suppresses the growth of alpha-Fe(N) crystalline during annealin g. Coercivity varies with the change of microstructure. (C) 1999 Elsevier S cience S.A. All rights reserved.