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Spontaneous unipolarity and anomalies of the dielectric and piezoelectric properties and electrical conductivity of initially heavily doped polydomain LiNbO3: Zn crystals

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Abstract

A significant spontaneous unipolarity in initially polydomain LiNbO3: Zn crystals doped in the range of “threshold” impurity concentrations (∼4.5–4.7 mol %) has been revealed from high-temperature measurements and after high-temperature annealing under short circuit conditions. The effect of strong increase in the spontaneous unipolarity is accompanied by a pronounced low-frequency dielectric dispersion and abrupt anomalies in the temperature dependences of the electrical conductivity and dielectric permittivity. The piezoelectric coefficient d 333 increases to nearly maximum values available in the reference literature for nominally pure single-domain LiNbO3 crystals.

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Authors and Affiliations

  1. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Center of the Russian Academy of Sciences, Akademgorodok 26a, Apatity, Murmansk oblast, 184209, Russia

    M. N. Palatnikov, V. A. Sandler, N. V. Sidorov, O. V. Makarova, I. V. Biryukova, I. N. Efremov & D. V. Ivanenko

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  1. M. N. Palatnikov
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  2. V. A. Sandler
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  3. N. V. Sidorov
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  4. O. V. Makarova
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  5. I. V. Biryukova
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  6. I. N. Efremov
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  7. D. V. Ivanenko
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Correspondence to M. N. Palatnikov.

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Original Russian Text © M.N. Palatnikov, V.A. Sandler, N.V. Sidorov, O.V. Makarova, I.V. Biryukova, I.N. Efremov, D.V. Ivanenko, 2015, published in Fizika Tverdogo Tela, 2015, Vol. 57, No. 8, pp. 1515–1520.

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Palatnikov, M.N., Sandler, V.A., Sidorov, N.V. et al. Spontaneous unipolarity and anomalies of the dielectric and piezoelectric properties and electrical conductivity of initially heavily doped polydomain LiNbO3: Zn crystals. Phys. Solid State 57, 1541–1546 (2015). https://doi.org/10.1134/S1063783415080235

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  • DOI: https://doi.org/10.1134/S1063783415080235

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