ELECTRON-PARAMAGNETIC-RESONANCE INVESTIGATIONS ON MANGANESE-DOPED PBTIO3 CERAMICS AND SINGLE-CRYSTALS

Authors
KLOTZSCHE G WINDSCH W WOJCIK K
Citation
G. Klotzsche et al., ELECTRON-PARAMAGNETIC-RESONANCE INVESTIGATIONS ON MANGANESE-DOPED PBTIO3 CERAMICS AND SINGLE-CRYSTALS, Ferroelectrics. Letters section, 15(5-6), 1993, pp. 115-120
Citations number
10
Categorie Soggetti
Physics, Condensed Matter
Journal title
Ferroelectrics. Letters section → ACNP
ISSN journal
07315171
Volume
15
Issue
5-6
Year of publication
1993
Pages
115 - 120
Database
ISI
SICI code
0731-5171(1993)15:5-6<115:EIOMP>2.0.ZU;2-L
Abstract
The EPR spectra of manganese doped PbTiO3 ceramics and single crystals reveal Mn4+ and Mn2+ incorporated in the oxygen octahedron. Mn4+ is l ocated exactly at Ti4+ site whereas the position of Mn2+ is near to th e centre of the oxygen octahedron. Both follow the collective motion o f the Ti4+ sublattice. In case of additional doping with La3+ the Mn2 ion undergoes a thermally excited hopping with correlation times near T(c) of the order of 10(-10) sec.