Dielectric relaxation spectroscopy and the ground state of K1-xLixTaO3
- 27 March 1989
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 1 (12) , 2241-2256
- https://doi.org/10.1088/0953-8984/1/12/009
Abstract
Dielectric susceptibility data are presented for frequencies between 10 and 109 Hz and for several Li concentrations. A low-frequency relaxation peak is attributed to an impurity mode slowing down to below 1 Hz at a concentration-dependent temperature. For Li concentrations xor=0.06 exhibit disorder features that cannot be attributed to glass models nor to ferroelectricity. Non-random occupation of lattice sites by impurities could be at the origin of these features.Keywords
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