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Crystal field analysis of different Er3+ sites in LiNbO3

The Er 3+ defect in lithium niobate (LiNbO 3 ), and the slightly different lattice environments ("sites") it experiences, have been investigated with combined excitation-emission spectroscopy under application of hydrostatic pressure and electric fields. The results give a solid basis for...

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Published in:Radiation effects and defects in solids 2001-11, Vol.155 (1-4), p.253-258
Main Authors: Dierolf, V., Sandmann, C., Kutsenko, A. B., Tröster, Th
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creator Dierolf, V.
Sandmann, C.
Kutsenko, A. B.
Tröster, Th
description The Er 3+ defect in lithium niobate (LiNbO 3 ), and the slightly different lattice environments ("sites") it experiences, have been investigated with combined excitation-emission spectroscopy under application of hydrostatic pressure and electric fields. The results give a solid basis for a crystal field analysis which yields site-specific crystal field parameters. We found that the Er 3+ sites can be classified into two groups. Firstly, the sites are distinct due to different relative arrangements of the nearest-neighbor oxygens and secondly they encounter to different local electric fields which are caused by charge compensators and other defects in a more distant neighborhood.
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subjects Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Defects and impurities in crystals
microstructure
Electron states
Exact sciences and technology
High pressure
Indirect evidence of dislocations and other defects (resistivity, slip, creep, strains, internal friction, epr, nmr, etc.)
Level splitting and interactions
LiNbO
Physics
Site-selective spectroscopy
Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect
Spin-orbit coupling, zeeman, stark, and strain splitting, jahn-teller effect
Stark effect
Structure of solids and liquids
crystallography
title Crystal field analysis of different Er3+ sites in LiNbO3
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