Association of impurities and vacancies in copper doped potassium tantalate crystals studied by EPR
Articolo
Data di Pubblicazione:
2003
Abstract:
he high temperature behavior of Electron Paramagnetic Resonance (EPR) signals of Cu2+ centers and Cu2+-Cu2+ exchanged coupled pair centers in potassium tantalate (KTaO3, and related K1-xLixTa1-yNbyO3) single crystals has been studied. EPR signals were observed in the range of 300-1000 K. The dynamic behavior of oxygen vacancies and the influence of its on Cu2+ ions EPR spectra were found. A model for divalent impurity ions in the potassium tantalate crystal is proposed.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
EPR, potassium tantalate, copper impurity
Elenco autori:
Badalyan, A. G.; Baranov, P. G.; Trepakov, V. A.; Azzoni, Carlo; Galinetto, Pietro; Mozzati, MARIA CRISTINA; Jastrabik, L.; Rosa, J.
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