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

Author

Jakes, Peter ; Kungl, Hans ; Schierholz, Ragnar ; Eichel, RuÌˆdiger A.

Author_Institution

Inst. fur Energie- und Klimaforschung (IEK-9), Forschungszentrum Julich, Julich, Germany

Volume

61

Issue

9

fYear

2014

fDate

Sept. 2014

Firstpage

1447

Lastpage

1455

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 (CuNb-VO) and trimeric (VO-CuNb-VO) defect complexes with 180° and non-180° domain walls has been analyzed and compared to the effects from (Cu - VO)^x× dipoles in CuO-doped lead zirconate titanate (PZT). Attempts are made to relate the rearrangement of defect complexes to macroscopic electromechanical properties.

Keywords

copper; copper compounds; electric domain walls; ferroelectric materials; ferroelectricity; lead compounds; paramagnetic resonance; piezoelectric materials; piezoelectricity; PZT:CuO; copper-doped sodium potassium niobate ferroelectrics; defect structure; dimeric defect complexes; domain walls; doped lead zirconate titanate; electron paramagnetic resonance; macroscopic electromechanical properties; piezoelectrics; trimeric defect complexes; Ceramics; Dielectrics; Doping; Geometry; Niobium; Strain;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2014.3058

Filename

6882942