Electrical and nonlinear optical properties of KTiOPO4 single crystals doped with niobium, antimony, and tantalum (original) (raw)

Abstract

Single crystals of K1 − x Ti1 − x NbxOPO4 (KTP: Nb), K1 − x Ti1 − x SbxOPO4 (KTP: Sb), and K1 − x Ti1 − x TaxOPO4 (KTP: Ta) solid solutions are grown and their dielectric, conducting, and nonlinear optical properties are investigated. The maximum contents x of niobium, antimony, and tantalum impurities in the crystals are equal to 0.11, 0.23, and 0.25, respectively. The doping of the KTiOPO4 crystals with niobium, antimony, and tantalum brings about the formation of additional potassium vacancies and additional potassium positions and, as a consequence, an increase in the ionic conductivity σ33. An increase in the doping level leads to a smearing of the ferroelectric phase transitions and a decrease in the phase transition temperatures. The permittivity of the doped crystals exhibits a broad relaxation peak in the temperature range 200–600°C.

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Authors and Affiliations

  1. Moscow State University, Vorob’evy gory, Moscow, 119992, Russia
    V. I. Voronkova, V. K. Yanovskii, T. Yu. Losevskaya & S. Yu. Stefanovich
  2. Institute of Solid-State Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia
    S. A. Zver’kov
  3. Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii pr. 59, Moscow, 119333, Russia
    O. A. Alekseeva & N. I. Sorokina

Authors

  1. V. I. Voronkova
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  2. V. K. Yanovskii
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  3. T. Yu. Losevskaya
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  4. S. Yu. Stefanovich
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  5. S. A. Zver’kov
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  6. O. A. Alekseeva
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  7. N. I. Sorokina
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Dedicated to the 80th Birthday of L.A. Shuvalov

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Translated from Kristallografiya, Vol. 49, No. 1, 2004, pp. 131–137.

Original Russian Text Copyright © 2004 by Voronkova, Yanovskii, Losevskaya, Stefanovich, Zver’kov, Alekseeva, Sorokina.

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Voronkova, V.I., Yanovskii, V.K., Losevskaya, T.Y. et al. Electrical and nonlinear optical properties of KTiOPO4 single crystals doped with niobium, antimony, and tantalum.Crystallogr. Rep. 49, 123–129 (2004). https://doi.org/10.1134/1.1643973

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