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Updated: Jun 26, 2026

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
Published on: May 10, 2021
Measurement of Cu(II) copper defect dipoles in ferroelectric PbTiO3 using electron-nuclear double resonance
R R Garipov1, J-M Spaeth, D J Keeble
1Carnegie Laboratory of Physics, School of Engineering, Physics, and Mathematics, University of Dundee, Dundee DD1 4HN, United Kingdom.
Abstract:
Point defects associated with Cu(II) in ferroelectric PbTiO3 were determined using pulsed electron-nuclear double resonance (ENDOR). Three centers were observed, and neighbor 207Pb superhyperfine tensors to the third shell of equivalent Pb ions measured. The ENDOR angular dependence showed that Cu(II) is incorporated as an acceptor at the Ti site. One center also showed ENDOR from an axial fluorine ion. The three defects were determined to be the Cu(II)-oxygen-vacancy defect dipole, Cu(II) with a complete oxygen octahedron, and a Cu(II)-F- defect dipole center.
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