The Local Order in KTaO3 Admixtured by the Ions of Li+

K. Kaszyńska a, Z. Trybuła aM.D. Glinchukb, I.P. Bykovb and V.V. Laguta b aInstitute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland bInstitute for Problems of Material Sciences, Ukrainian Academy of Sciences, Krjianovskogo Str. 3, 03142 Kiev, Ukraine

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Received: 24 04 2005;

The low temperature behavior of the KTaO3 type incipient ferroelectric crystals is of constant interest. The quantum fluctuations reduce the transition to the ferroelectric state in these crystals. It is possible that the small amount of the dopant Li+ can lead, through the elastic interactions, to local glass-like short-range order or even to the relaxor ferroelectric order for x>2.6%. We presented that the low lithium doped x=0.005 KTaO3 crystals exhibit the dielectric dispersion of ε' and ε'', suggesting the glass-like behavior in the low temperature range.

DOI: 10.12693/APhysPolA.108.379 PACS numbers:64.70.-p, 36.40.Ei, 77.22.Gm, 74.72.-h, 74.76.Bz