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Characterization of Defect Structure in Acceptor‐Modified Piezoelectric Ceramics by Multifrequency and Multipulse Electron Paramagnetic Resonance Spectroscopy
Author(s) -
Eichel RüdigerA.
Publication year - 2008
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2008.02303.x
Subject(s) - characterization (materials science) , electron paramagnetic resonance , acceptor , spectroscopy , materials science , piezoelectricity , paramagnetism , crystallographic defect , dipole , resonance (particle physics) , perovskite (structure) , density functional theory , condensed matter physics , nuclear magnetic resonance , chemical physics , chemistry , atomic physics , nanotechnology , crystallography , computational chemistry , physics , organic chemistry , quantum mechanics , composite material
The defect chemistry in the vicinity aliovalent acceptor‐type transition‐metal functional centers in piezoelectric perovskite oxides is characterized by means of multifrequency and multipulse electron paramagnetic resonance spectroscopy, assisted by density‐functional theory calculations. The focus is on the formation of chargedand neutraldefect dipoles, which are discussed causing internal bias fields, as well as isovalent manganese substitutes. Based on this nanoscale characterization of the defect structure, its impact on macroscopic material properties is discussed.