EFFECTS OF NONSTOICHIOMETRY ON RAMAN-SPECTRA OF K6LI4NB10O30 (KLN) COMPOUNDS

Authors
FORTIN W KUGEL GE RYTZ D
Citation
W. Fortin et al., EFFECTS OF NONSTOICHIOMETRY ON RAMAN-SPECTRA OF K6LI4NB10O30 (KLN) COMPOUNDS, Ferroelectrics, 202(1-4), 1997, pp. 131-138
Citations number
8
Categorie Soggetti
Physics, Condensed Matter","Material Science
Journal title
Ferroelectrics → ACNP
ISSN journal
00150193
Volume
202
Issue
1-4
Year of publication
1997
Pages
131 - 138
Database
ISI
SICI code
0015-0193(1997)202:1-4<131:EONORO>2.0.ZU;2-S
Abstract
The strong influence of Nb excess in K6Li4Nb10O30 (KLN) ferroelectric crystals on optical and second harmonic generation properties makes it necessary to develop a non-destructive characterization procedure. Ra man spectra of KLN are very sensitive to the Nb excess. The broadening and the peak position of an octahedron mode give a quantitative data to determine the Nb excess: for increasing concentrations, the frequen cy of a particular mode decreases and a broadening of all the modes oc curs.