Non-Linearity Extremum in Niobium Doped Potassium Tantalate
نویسندگان
چکیده
~We report non-linear dielectric measurements in the KTa03:Nb system (~Nb < 0.05). The non-linear susceptibility diverges at low temperatures and reaches maximum values in the intermediate range (0.0075 < ~Nb < 0.02). To account for this extremum non linearity, we propose a model of temperature dependent clusters which fits with a number of experimental reports. We also suggest that this model may be applied to the related compounds SrTi031Ca and KTa031Na.
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