Xanes spectroscopic study of the electronic structure of Ti in KTiOPO₄ and some of its isomorphous compounds

verfasst von

B. Pillep, M. Fröba, M. L.F. Phillips, J. Wong, G. D. Stucky, P. Behrens

Abstract

Ti K-edge XANES spectra of KTiOPO₄, an important material for second harmonic generation (SHG) and several of its isomorphs including MTiOPO₄ (M = Na, Ag) and KTi_1-xSn_xOPO₄ (x = 0.1, 0.4, 0.5, 0.6) have been recorded. The pre-edge regions of these spectra exhibit characteristic features that are assigned to electronic transitions from the Ti 1s to the unoccupied Ti 3d and 4p levels. The intensities of these pre-edge features are very sensitive to slight changes in the asymmetry of the octahedral Ti coordination sphere. Thus, in the series KTi_1-xSn_xOPO₄ the successive substitution of Ti by Sn causes a substantial decrease of the Ti coordination asymmetry. This decrease is correlated with a loss in SHG intensity.

Externe Organisation(en)

Ludwig-Maximilians-Universität München (LMU)
Lawrence Livermore National Laboratory
Universität Hamburg
University of California at Santa Barbara
Sandia National Laboratories NM

Typ

Artikel

Journal

Solid state communications

Band

103

Seiten

203-207

Anzahl der Seiten

5

ISSN

0038-1098

Publikationsdatum

07.1997

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Allgemeine Chemie, Physik der kondensierten Materie, Werkstoffchemie

Elektronische Version(en)

https://doi.org/10.1016/S0038-1098(97)00173-7 (Zugang: Unbekannt)