A MOSSBAUER STUDY OF BCE STAINLESS-STEEL FILMS

Authors
BOUBEKER B EYMERY JP AURIC P RAHMOUNE M
Citation
B. Boubeker et al., A MOSSBAUER STUDY OF BCE STAINLESS-STEEL FILMS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 101(3), 1995, pp. 267-274
Citations number
33
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
101
Issue
3
Year of publication
1995
Pages
267 - 274
Database
ISI
SICI code
0168-583X(1995)101:3<267:AMSOBS>2.0.ZU;2-6
Abstract
Conversion electron Mossbauer spectroscopy is used to investigate the ferromagnetic state of bcc stainless steel films. First, a low tempera ture study allows the resolution of the local Fe environments. It is f ound that the main environments correspond to three Fe sites with diff erent short-range order. Second, a phase transition takes place at tem peratures higher than 750 K. Evidence is found that, during an isother mal kinetic at 913 K, the ferromagnetic part of the Mossbauer spectra splits up into two components, thus indicating the existence of two fe rromagnetic iron sites. The index n and activation energy Q in the Joh nson-Mehl-Avrami plot are found to be 0.53-0.68 and 366-462 kJ mol(-1) , respectively. The role of Cr atoms is also discussed.