Open AccessMultiple scattering approach to K ‐edge XANES of Sb–Te systems
Author(s) -
Hayakawa Kuniko,
Fujikawa Takashi,
Iwata Noriyuki,
Tani Katsuhiko
Publication year - 2001
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s090904950100190x
Subject(s) - xanes , metastability , amorphous solid , materials science , scattering , spectral line , crystallography , chemical physics , physics , optics , chemistry , quantum mechanics , astronomy
The Sb‐Te systems are important for optical memories. The local structures of these Sb‐Te systems are crucial to understand the properties. Here we study three different Sb‐Te systems, Sb 2 Te 3 , c‐ and a‐SbTe (c; crystalline, a; amorphous) by use of XANES analyses. The present calculations for Sb 2 Te 3 system show quite good agreement with the observed spectra. In contrast to Sb 2 Te 3 system, both c‐ and a‐SbTe systems, in which a ratio of Sb to Te is 3, are metastable; both of the structures have not been known yet. We thus investigate these local structures by use of the multiple scattering approach, and propose a possible model for each of c‐ and a‐SbTe.