Structure of lead zirconium oxide: Evidence from NMR
Institute for Problems of Materials Science, NASc of Ukraine,
Krjijanovskogo 3, 252180 Kiev, Ukraine
2 Institute of Physics, Academy of Science of the Czech Republic, Na Slovance 2, Praha 8, Czech Republic
Corresponding author: email@example.com
Revised: 2 April 1999
Accepted: 2 April 1999
Published online: 15 July 1999
Two different lead ion positions with tetragonal and orthorhombic local symmetry were revealed in PbZrO3 ceramics on the base of 207Pb NMR spectra measurements at room temperature. The obtained data and their analysis on the base of the spectra shape calculations are in agreement with a symmetry of Pbam nonpolar group space of PbZrO3. The comparison of observed spectra in PbTiO3 and PbZrO3 with calculated spectra allowing for resonance frequency chemical shift and spin-spin interaction show that the displacements of lead and oxygen ions are not random quantities in the investigated PbZrO3 ceramic samples.
PACS: 77.80.-e – Ferroelectricity and antiferroelectricity / 76.60.-k – Nuclear magnetic resonance and relaxation / 77.84.Dy – Niobates, titanates, tantalates, PZT ceramics, etc.
© EDP Sciences, 1999