VACANCY ORDERING IN FE7SE8-FE7S8 SOLID-SOLUTIONS STUDIED BY MOSSBAUER, X-RAY AND MAGNETIZATION TECHNIQUES

Authors
ERICSSON T AMCOFF O NORDBLAD P
Citation
T. Ericsson et al., VACANCY ORDERING IN FE7SE8-FE7S8 SOLID-SOLUTIONS STUDIED BY MOSSBAUER, X-RAY AND MAGNETIZATION TECHNIQUES, Hyperfine interactions, 90(1-4), 1994, pp. 515-520
Citations number
7
Categorie Soggetti
Physics, Atomic, Molecular & Chemical","Physics, Nuclear","Physics, Condensed Matter
Journal title
Hyperfine interactions → ACNP
ISSN journal
03043843
Volume
90
Issue
1-4
Year of publication
1994
Pages
515 - 520
Database
ISI
SICI code
0304-3843(1994)90:1-4<515:VOIFSS>2.0.ZU;2-D
Abstract
Superstructures, due to cation vacancy ordering, form in the NiAs-rela ted pseudobinary solid solution Fe7Se8-Fe7S8 close to both end composi tions (Fe-7(SxSe1-x)(8) with x less than or equal to 0.15 and x greate r than or equal to 0.85) during rapid cooling of quartz ampoules from 600 degrees C, according to X-ray diffractometry (XRD) and magnetizati on (SQUID) measurements. Mossbauer spectroscopy indicates local vacanc y ordering in the whole interval, but XRD and SQUID data exclude long- range vacancy ordering when the anion proportion of sulphur is between 15% and 85%.