Determination of functional center local environment in copper-modified Pb[Zr0.54Ti0.46]O-3 ceramics
Eichel, RA; Kungl, H; Hoffmann, MJ
JOURNAL OF APPLIED PHYSICS, 2004, Band 95, Heft 12, S. 8092–8096
Determination of functional center local environment in copper-modified Pb[Zr0.54Ti0.46]O-3 ceramics.
Ferroelectric copper(II)-modified polycrystalline Pb[Zr0.54Ti0.46]O-3 ceramics with a dopant concentration of 0.25 mol % were investigated by means of electron paramagnetic resonance and hyperfine sublevel correlation spectroscopy. Special emphasis was put on the resolution of the Pb-207 hyperfine couplings, which were resolved in the first and second coordination sphere. The results prove that copper is incorporated at the octahedrally coordinated [Zr,Ti] site, acting as an acceptor and disfavor a directly coordinated oxygen vacancy to the copper center for charge compensation.