Affiliation:
1. Taurida National V. I. Vernadsky University
2. SRC “Carat”
3. Scientific Research Company “Carat”
Abstract
The low-frequency impedance spectroscopy method has been used to investigate the electrical conductivity peculiarities of lithium niobate (LN) crystals reduced in hydrogen. It has been found that the activation energy value of the dark electrical conductivity of such crystals in a temperature range of 288...370 К is equal to 0.68±0.02 eV. It has been demonstrated that the multiple heating of «black» LN crystals up to a temperature of about 420 K results in surface layers with modified electrical properties to occur in the crystal’s polar faces. The electrical conductivity mechanism of LiNbO3 crystals reduced in the hydrogen-containing atmosphere, and the causes of the instability of these properties are discussed.
Publisher
Trans Tech Publications, Ltd.
Subject
Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics
Reference14 articles.
1. K.G. Belabaev, V.B. Markov, S.G. Odoulov, Photovoltaic effect in reduced crystals of lithium niobate, Ukr. J. Phys. 24 (1979) 366-371.
2. P.F. Bordui, D.H. Jundt, E.M. Standifer, R.G. Norwood, R.L. Sawin, J.D. Galipeau, Chemically reduced lithium niobate single crystals: processing, properties and improved surface acoustic wave device fabrication and performance, J. Appl. Phys. 85 (1999).
3. B.K. Brickeen, C. Shanta, Reducing the pyroelectric effect in lithium niobates Q-switch crystals, Opt. Eng. 49 (2010) 124201.
4. D. Yu. Sugak, I.M. Solskii, I.I. Syvorotka, M.M. Vakiv, Influence of thermochemical treatment on the optical properties of the lithium niobate single crystals, New Technologies 1 (2012) 3-12.
5. T.R. Volk, M. Wöhlecke. Lithium niobate. Defects, photorefraction and ferroelectric switching, Springer-Verlag, Berlin, Heidelberg, (2008).
Cited by
10 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献