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Anomalous dielectric and piezoelectric properties and electrical conductivity of heavily doped LiNbO3:Zn crystals

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Abstract

In LiNbO3:Zn crystals with near-threshold doping levels ( 4.5–4.7 mol % Zn), high-temperature measurements and high-temperature annealing under short-circuit conditions lead to considerable changes in spontaneous unipolarity. The considerable changes in spontaneous unipolarity are accompanied by well-defined low-frequency dielectric dispersion and sharp anomalies in temperature dependences of electrical conductivity and dielectric permittivity. As a result, the piezoelectric modulus d 333 increases to a level approaching the highest values reported in the literature for single-domain nominally pure LiNbO3 crystals.

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Authors and Affiliations

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

    M. N. Palatnikov, V. A. Sandler, N. V. Sidorov & O. V. Makarova

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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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Correspondence to M. N. Palatnikov.

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Original Russian Text © M.N. Palatnikov, V.A. Sandler, N.V. Sidorov, O.V. Makarova, 2016, published in Neorganicheskie Materialy, 2016, Vol. 52, No. 2, pp. 180–186.

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Palatnikov, M.N., Sandler, V.A., Sidorov, N.V. et al. Anomalous dielectric and piezoelectric properties and electrical conductivity of heavily doped LiNbO3:Zn crystals. Inorg Mater 52, 147–152 (2016). https://doi.org/10.1134/S0020168516020114

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  • DOI: https://doi.org/10.1134/S0020168516020114

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