FEATURES OF THE FORMATION OF COMPLEX DEFECTS IN CRYSTALS LiNbO3:Zn(4.34):Fe(0.02) and LiNbO3:Zn(4.54) mol.%

Abstract

LiNbO3:Zn(4.34):Fe(0.02) mol.% и LiNbO3:Zn(4.54) mol.% crystals were researched by IR spectroscopy in the area of stretching vibrations of ОН–- groups. Absorption bands with frequencies 3484 cm-1 were detected to correspond to vibrations of ((VLi)−-OH− ) complex. We analyzed the occurrence of the doping impurities Zn, Fe in the structure LiNbO3 and influence on the concentration of OH- -groups.