The effect of annealing on the structure and magnetic properties of FeCoN thin films

Citation
Hy. Wang et al., The effect of annealing on the structure and magnetic properties of FeCoN thin films, J PHYS-COND, 11(4), 1999, pp. 989-995
Citations number
18
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN journal
09538984 → ACNP
Volume
11
Issue
4
Year of publication
1999
Pages
989 - 995
Database
ISI
SICI code
0953-8984(19990201)11:4<989:TEOAOT>2.0.ZU;2-B
Abstract
FeCoN films with 10 at.% Co content were prepared by the sputtering method. The effect of annealing on the structure and magnetic properties of FeCoN films was investigated. The as-deposited FeCoN films consist of alpha'-(Fe, Co) martensite. Annealing at 150-200 degrees C alpha'-(Fe, Co) martensite transforms into the alpha "-(Fe, Co)(16)N-2 phase. The alpha "-(Fe, Co)(16) N-2 formed at 150-200 degrees C decomposes into alpha-(Fe, Co) and gamma'-( Fe, Co)(4)N at annealing temperature T-a = 450 degrees C, and it disappears in the FeCoN film annealed at T-a = 500 degrees C The FeCoN films annealed at 150-400 degrees C show very high saturation magnetization 4 pi M-s = 25 -27 kG, which confirms the high saturation magnetization of the alpha "-(Fe , Co)(16)N-2.