STRUCTURAL STUDY OF PB(MG1 3NB2/3)O-3 AT LOW-TEMPERATURES/

Authors
CHERNYSHEV VV ZHUKOV SG VAKHRUSHEV SB SCHENK H
Citation
Vv. Chernyshev et al., STRUCTURAL STUDY OF PB(MG1 3NB2/3)O-3 AT LOW-TEMPERATURES/, Ferroelectrics. Letters section, 23(1-2), 1997, pp. 45-53
Citations number
16
Categorie Soggetti
Physics, Condensed Matter
Journal title
Ferroelectrics. Letters section → ACNP
ISSN journal
07315171
Volume
23
Issue
1-2
Year of publication
1997
Pages
45 - 53
Database
ISI
SICI code
0731-5171(1997)23:1-2<45:SSOP3A>2.0.ZU;2-Z
Abstract
The structure of the relaxer ferroelectric Pb(Mg1/3Nb2/3)O-3 crystal w as studied with the X-ray single crystal diffraction at 110, 224 and 2 93 K. The remarkable redistribution of the reflections intensifies at low temperatures was observed. The structure of the low temperature ph ase is described with the model of the substantially nonuniform displa cements of the lead ions using the derived analytical expression of th e scattering form-factor. The structure refinement shows the good agre ement between the model and the experimental data at low temperatures.