Identification of point defects in hydrothermally grown KTiOPO4
- 15 September 1991
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 70 (6) , 2991-2994
- https://doi.org/10.1063/1.349327
Abstract
Electron paramagnetic resonance has been used to investigate radiation-induced point defects in hydrothermally grown single crystals of potassium titanyl phosphate ( KTiOPO4 or KTP). The crystals were irradiated at 77 K with 60–kV x rays. A trapped-hole center, a Ti3+ center, and a Pt3+ center were observed between 10 and 30 K after the initial 77-K irradiation. These defects become thermally unstable near 160 K. The trapped hole is localized on an oxygen ion adjacent to a potassium vacancy and has resolved hyperfine interactions with three phosphorus nuclei. The Ti3+ ion is the intrinsic self-trapped electron center in KTP and has weak hyperfine interactions with four phosphorus nuclei.This publication has 10 references indexed in Scilit:
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