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Ferroelectrics Volume 469, 2014 - Issue 1: Proceedings of the International Workshop on Relaxor Ferroelectrics (IWRF-2013)
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Original Articles

Dielectric Relaxation in SrTiO3-based Solid Solutions with Heterovalent Substitutions

P. A. MarkovinIoffe Physical-Technical Institute of the RAS, 194021, Saint Petersburg, RussiaCorrespondence[email protected]
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,
V. V. LemanovIoffe Physical-Technical Institute of the RAS, 194021, Saint Petersburg, RussiaView further author information
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M. E. GuzhvaIoffe Physical-Technical Institute of the RAS, 194021, Saint Petersburg, Russia;Saint-Petersburg State Polytechnical University, 195251, Saint-Petersburg, Russia;National Research University for Information Technology, Mechanics and Optics, 197101Saint-Petersburg, RussiaView further author information
&
V. A. TrepakovIoffe Physical-Technical Institute of the RAS, 194021, Saint Petersburg, Russia;Institute of Physics, ASCR, v.v.i., Na Slovance 2, 182 21Praha 8, Czech RepublicView further author information
Pages 43-49 | Received 07 Mar 2014, Accepted 02 Jun 2014, Published online: 09 Oct 2014
 
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Abstract

Temperature dependences of the dielectric permittivity and thermal treatment effect have been studied for (1−x)SrTiO3-(x)KTaO3 and (1−x)SrTiO3-(x)KNbO3 (0 ≤ x ≤ 0.2) solid solutions. For low concentrations x, strong dielectric relaxation was found in the temperature range of 150–250 K. A relaxing centers model based on the local charge compensation of heterovalent impurities is discussed.

Acknowledgments

We would like to thank P. P. Syrnikov, and T. A. Shaplygina for samples preparation, N. V. Zaitseva for assistance with X-ray diffraction analysis of the samples and O. E. Kvyatkovskii and V. K. Yarmarkin for fruitful discussions.

Additional information

Funding

This research was supported in part by the Fundamental Research Programs of the Russian Academy of Sciences and Grant P108/12/1941 of the Czech Republic.

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