Growth and Magneto-Optical Properties of Li 2 MoO 4 ·1.8Tb 2 (MoO 4 ) 3 Crystal

Li 2 MoO 4 ·1.8Tb 2 (MoO 4 ) 3 crystal, a kind of solid solution crystal, was grown in air by the top seeded solvent growth method in a Li 2 Mo 2 O 7 flux. The lattice parameters of the crystal were determined by X-ray diffraction analysis. The absorption coefficient of the crystal was investigated at wavelengths from 400 to 1500 nm at room temperature. Valence states of Tb ions in Li 2 MoO 4 ·1.8Tb 2 (MoO 4 ) 3 crystal were analyzed by X-ray photoelectron spectroscopy measurement. Verdet constants for the Li 2 MoO 4 ·1.8Tb 2 (MoO 4 ) 3 crystal at 532, 633 and 1064 nm wavelengths were measured by the extinction method. They are −341, −239 and −75 rad m −1 T −1 , respectively. The results show that the crystal has a larger magneto-optical figure of merit than terbium gallium garnet at wavelength of 633 nm.