IR absorption spectra in the region of stretching and deformation vibrations of hydrogen bond in pure and alloyed single crystals of LiNbO3

N.N Novikova,N.V Sidorov,V.А Yakovlev

doi:10.1051/epjconf/201713203058

Abstract

We have measured infrared absorption spectra of the stretching and bending vibrations of the hydrogen bond of pure and alloy additives Me (Me = Mg, Zn) single crystals of lithium niobate (LiNbO 3 ) grown using various technologies. Preliminary studies of the spectra showed that the frequency of stretching vibrations in the IR spectra of single-crystal samples obtained from the homogeneously doped charge differ significantly (more than 50 cm −1 ). However, no difference in the IR spectra of single crystals obtained using other doping techniques, we have found. It is assumed that the observed differences in the absorption spectra of single crystals due to the different character of the formation of hydrogen bonds in the preparation of precursors Nb 2 O 5 : Me.

Highlights

The infrared absorption spectra were studied in the polarized radiation in the region of stretching and deformation vibrations of hydrogen bonds for more than 60 nominally pure and alloyed in a wide range of concentrations of alloying elements Me (Me=Mg, Zn) single crystals of lithium niobate (LiNbO3), grown by various techniques
We have measured infrared absorption spectra of the stretching and bending vibrations of the hydrogen bond of pure and alloy additives Me (Me = Mg, Zn) single crystals of lithium niobate (LiNbO3) grown using various technologies
Four techniques of doping were used to prepare these crystals: 1. Homogeneous doping is the synthesis of granulated mixture with a high bulk density is produced using a homogeneous solid Nb2O5 :Me precursors, obtained by homogeneous doping of Me, recovered at the stage of extraction separation Nb2O5

Summary

Introduction

The infrared absorption spectra were studied in the polarized radiation in the region of stretching and deformation vibrations of hydrogen bonds for more than 60 nominally pure and alloyed in a wide range of concentrations of alloying elements Me (Me=Mg, Zn) single crystals of lithium niobate (LiNbO3), grown by various techniques. Homogeneous doping is the synthesis of granulated mixture with a high bulk density is produced using a homogeneous solid Nb2O5 :Me precursors, obtained by homogeneous doping of Me, recovered at the stage of extraction separation Nb2O5.

Results

Conclusion