Bibliographic Details
| Title: |
REARRANGEMENT OF RARE EARTH DEFECTS UNDER DOMAIN INVERSION IN LiNbO 3. |
| Authors: |
DIEROLF, V., SANDMANN, C., GOPALAN, V., KIM, S., POLGAR, K. |
| Source: |
Radiation Effects & Defects in Solids. Jan2003, Vol. 158 Issue 1-6, p247-250. 4p. |
| Subjects: |
Electronic excitation, Emission spectroscopy, Erbium, Ions, Electric fields |
| Abstract: |
Using high resolution excitation-emission spectroscopy we investigated the changes occurring in the optical transition of Er 3+ ions in LiNbO 3 during inversion of the ferroelectric axis. In stoichiometric LiNbO 3 we find that a drastic reconfiguration among the different defect sites takes places favoring those centers which have already been dominant in the as-grown sample. The reconfiguration is attributed to changes in the arrangement of the local charge compensators. Furthermore, we find a small shift of the emission transition energy, which is consistent with an increase of the intrinsic electric field. These findings make the Er 3+ ions very suitable probes for 3D imaging of domain structures and for in-situ studies of the dynamics of the domain inversion processes and the defect/domain wall interaction. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
