Published March 1998 | Version v1
Journal article Metadata-only

X-ray structure analysis of lead magnesium niobate PbMg1/3Nb2/3O3 at low temperatures

Creators

  • 1. Moscow State University, Vorob'evy gory, Moscow, 119899 (Russian Federation)

Description

X-ray structure analysis of lead magnesium niobate PbMg1/3Nb2/3O3 (PMN) has been performed in the temperature range 110-573 K. When the temperature is lowered, diffraction profiles of reflections are broadened and their integrated intensities are redistributed. It is assumed that these changes are explained by nonuniform displacements of lead atoms in the crystal lattice when the temperature is lowered. Under this assumption, the analytical expression for the scattering factor for Pb atoms has been obtained. The use of this factor in the least-squares procedure results in good agreement between the experimental and calculated integrated intensities of Bragg reflections at low temperatures

Additional details

Identifiers

URL
https://www.pleiades.online/contents/cryst/cryst2_98v43cont.htm;

Publishing Information

Journal Title
Crystallography Reports
Journal Volume
43
Journal Issue
2
Journal Page Range
p. 171-174
ISSN
1063-7745
CODEN
CYSTE3

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
35075922
Subject category
S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Translation
Descriptors DEI
BRAGG REFLECTION; CONFIGURATION; CRYSTAL LATTICES; FERROELECTRIC MATERIALS; LEAD COMPOUNDS; MAGNESIUM COMPOUNDS; MOLECULAR STRUCTURE; NIOBIUM COMPOUNDS; TEMPERATURE RANGE 0065-0273 K; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K; X-RAY DIFFRACTION
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; COHERENT SCATTERING; CRYSTAL STRUCTURE; DIELECTRIC MATERIALS; DIFFRACTION; MATERIALS; REFLECTION; REFRACTORY METAL COMPOUNDS; SCATTERING; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
Translated from Kristallografiya, ISSN 0023-4761, 43, 206-209 (March-April 1998); (c) 1998 MAIK/Interperiodika