Analyzing the defect structure of CuO-doped PZT and KNN piezoelectrics from electron paramagnetic resonance

Peter Jakes; Hans Kungl; Roland Schierholz; Rüdiger-A Eichel

doi:10.1109/TUFFC.2014.3058

Analyzing the defect structure of CuO-doped PZT and KNN piezoelectrics from electron paramagnetic resonance

IEEE Trans Ultrason Ferroelectr Freq Control. 2014 Sep;61(9):1447-55. doi: 10.1109/TUFFC.2014.3058.

Authors

Peter Jakes, Hans Kungl, Roland Schierholz, Rüdiger-A Eichel

PMID: 25167144
DOI: 10.1109/TUFFC.2014.3058

Abstract

The defect structure for copper-doped sodium potassium niobate (KNN) ferroelectrics has been analyzed with respect to its defect structure. In particular, the interplay between the mutually compensating dimeric (Cu(Nb)'''-V(O)··) and trimeric (V(O)··-Cu(Nb)'''-V(O)··)· defect complexes with 180° and non-180° domain walls has been analyzed and compared to the effects from (Cu'' - V(O)··)(x)× dipoles in CuO-doped lead zirconate titanate (PZT). Attempts are made to relate the rearrangement of defect complexes to macroscopic electromechanical properties.

Publication types

Research Support, Non-U.S. Gov't