Fluorescence EXAFS study on local structures around Mn atoms in MnF2-CaF2 superlattices and double hetero-structures on Si(111)

Authors
Ofuchi, H Tabuchi, M Banshchikov, AG Sokolov, NS Yakovlev, NL Takeda, Y
Citation
H. Ofuchi et al., Fluorescence EXAFS study on local structures around Mn atoms in MnF2-CaF2 superlattices and double hetero-structures on Si(111), APPL SURF S, 159, 2000, pp. 220-224
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
APPLIED SURFACE SCIENCE
ISSN journal
01694332 → ACNP
Volume
159
Year of publication
2000
Pages
220 - 224
Database
ISI
SICI code
0169-4332(200006)159:<220:FESOLS>2.0.ZU;2-9
Abstract
Local structures around Mn atoms in MnF2-CaF2 superlattices and double hete rostructures (DHSs) grown by molecular beam epitaxy (MBE) were investigated by fluorescence extended X-ray absorption fine structure (EXAFS) measureme nt. The EXAFS analysis revealed that in thin MnF2 layers (less than or equa l to 3 ML) fluorite structure that does not exist at normal conditions prev ailed over the rutile structure, and the content ratio of the fluorite MnF2 strongly depended on the thickness of the MnF2 lever. Therefore, the thin MnF2 layers grew in fluorite structure on CaF2 and changed to the rutile st ructure with the increase Uf the MnF2 layer thickness. (C) 2000 Elsevier Sc ience B.V. All rights reserved.