화학공학소재연구정보센터
Journal of Crystal Growth, Vol.484, 17-20, 2018
Growth and performance research of Tb3Ga5O12 magneto-optical crystal
Tb3Ga5O12 (TGG) crystal was grown successfully by the Czochralski method in an iridium crucible with radio frequency (RF)-induced heating under high purity 80% N-2 + 20% CO2 atmosphere. None impurity peaks could be found in the XRD patterns compared to standard cards of TGG. Transmittance spectrum was investigated in the visible-near infrared region (VIS-NIR) at room temperature, which indicated the TGG crystal had high transmittance at 500-1100 nm. The Faraday rotations, Verdet constants and magnetic susceptibility of (1 1 1), (1 0 0), (1 1 0) of as-grown crystal have been discussed in detail confirming that Faraday effects of the TGG crystals are anisotropic which is related with magnetic susceptibility, and the Faraday effects of [1 1 1] have been proved to be the best, and the Verdet constants of [1 1 1] was also investigated at different wavelength at room temperature. The thermal conductivity and laser induced damage threshold of the crystal were also analyzed in detailed. (C) 2017 Elsevier B.V. All rights reserved.