ESR Studies of Dipole Impurities in Incipient Ferroelectric KTaO3: Li
- 1 January 1985
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 24 (S2)
- https://doi.org/10.7567/jjaps.24s2.670
Abstract
The concentration, temperature and orientational dependences of axial center Fe3+ ESR line width have been studied in incipient ferroelectric K1-x Li x TaO3 (0.01\leqslantx\leqslant0.05). The contributions in total line broadening due to electric and stress fields created by off-center Li+ ions were found. It was shown that observed nonlinear ESR line width dependence on Li+ ions concentration is connected with manifestation of the long range part of dipole-dipole interaction in strongly polarizable crystals because of the occurance correlative polarization regions in such crystals. The effective dipole moment d * of off-center Li+ ions and their reorientation frequency were determined.Keywords
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