This article is cited in 30 papers

Ferroelectricity

Electrical properties of LiNbO$_3$ crystals reduced in a hydrogen atmosphere

A. V. Yatsenko^a, S. V. Yevdokimov^a, A. S. Pritulenko^a, D. Yu. Sugak^bc, I. M. Sol'skii<sup>c

a</sup> Vernadskiy Tavricheskiy National University, Simferopol'
^b Lviv Polytechnic National University
^c Karat Scientific and Production Enterprise, L'vov

Abstract: The temperature dependence of the electrical conductivity and pyroelectric coefficient of lithium niobate crystals reduced in a hydrogen atmosphere has been studied. It has been established that the activation energy of dark electrical conduction in these crystals in the temperature range 288–350 K differs from the corresponding values for crystals reduced in vacuum and is equal to 0.68 $\pm$ 0.02 eV. It has been shown that the annealing of LiNbO$_3$ crystals in a hydrogen atmosphere hardly affects their pyroelectric properties. The mechanism of electrical conduction of LiNbO$_3$ crystals reduced in a hydrogen-containing atmosphere has been discussed.

Received: 29.12.2011
Accepted: 08.02.2012

 English version: Physics of the Solid State, 2012, 54:11, 2231–2235

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