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Zhurnal Tekhnicheskoi Fiziki, 2020, Volume 90, Issue 12, Pages 2078–2084
DOI: https://doi.org/10.21883/JTF.2020.12.50125.439-19
(Mi jtf5129)
 

This article is cited in 3 scientific papers (total in 3 papers)

Physical science of materials

A study of electrical characteristics of crystals of homogeneously doped LiNbO$_{3}$:Zn,Mg in the temperature range of 450–900 K

M. N. Palatnikov, V. A. Sandler, N. V. Sidorov, S. M. Masloboeva, O. V. Makarova

Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Federal Research Center Kola Scientific Center, Russian Academy of Sciences, Apatity, Russia
Full-text PDF (312 kB) Citations (3)
Abstract: In a series of initially polydomain crystals of LiNbO$_{3}$:Zn,Mg obtained by the homogeneous doping of the crystals in the concentration ranges of around 1 $\pm$ 0.02 mol.% MgO and 3.0 – 4.6 mol.% ZnO, abrupt increases in temperature dependences of electrical conductivity $\sigma(T)$ and dielectric constant $\varepsilon(T)$ with the manifestation of low-frequency dielectric dispersion are observed near $T^*\approx$ 800 K. At $T>T^*$, these crystals exhibit the activation enthalpy ($H_a\approx$ 1.76 – 2.07 eV) and transport enthalpy ($H_m\approx$ 1.55 – 2.01 eV) values that are unusually high for cationic conductors, while both values at $T<T^*$ are typical of conductivity caused by Li$^*$ cations in LiNbO$_{3}$ crystals ($H_a \approx$ 1.2 – 1.4 eV and $H_m \approx$ 1.1 – 1.28 eV). Anomalous increases in the $H_a$ and $H_m$ values for crystals with the LiNbO$_{3}$ structure are apparently associated with the formation of associated vacancies (divacancies) with a finite binding energy and a pair-correlated hop of Li$^*$ ions in the LiNbO$_{3}$ : Zn,Mg crystals in the high-temperature region with increased conductivity $(T>T^*)$.
Funding agency Grant number
Ministry of Education and Science of the Russian Federation 0226-2018-0004
Russian Foundation for Basic Research 18-03-00231-а
This study was performed within the framework of a state order of the Ministry of Science and Higher Education of the Russian Federation (research topic no. 0226-2018-0004, state registration no. AAAA-A18-118022190125-2) and partially supported by the Russian Foundation for Basic Research (grant no. 18-03-00231-a).
Received: 28.12.2019
Revised: 19.02.2020
Accepted: 19.02.2020
English version:
Technical Physics, 2020, Volume 65, Issue 12, Pages 1987–1993
DOI: https://doi.org/10.1134/S1063784220120208
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: M. N. Palatnikov, V. A. Sandler, N. V. Sidorov, S. M. Masloboeva, O. V. Makarova, “A study of electrical characteristics of crystals of homogeneously doped LiNbO$_{3}$:Zn,Mg in the temperature range of 450–900 K”, Zhurnal Tekhnicheskoi Fiziki, 90:12 (2020), 2078–2084; Tech. Phys., 65:12 (2020), 1987–1993
Citation in format AMSBIB
\Bibitem{PalSanSid20}
\by M.~N.~Palatnikov, V.~A.~Sandler, N.~V.~Sidorov, S.~M.~Masloboeva, O.~V.~Makarova
\paper A study of electrical characteristics of crystals of homogeneously doped LiNbO$_{3}$:Zn,Mg in the temperature range of 450--900 K
\jour Zhurnal Tekhnicheskoi Fiziki
\yr 2020
\vol 90
\issue 12
\pages 2078--2084
\mathnet{http://mi.mathnet.ru/jtf5129}
\crossref{https://doi.org/10.21883/JTF.2020.12.50125.439-19}
\elib{https://elibrary.ru/item.asp?id=44367631}
\transl
\jour Tech. Phys.
\yr 2020
\vol 65
\issue 12
\pages 1987--1993
\crossref{https://doi.org/10.1134/S1063784220120208}
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  • This publication is cited in the following 3 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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