Hardness, Raman spectrum, thermal properties, and laser damage threshold of Y3Sc2Ga3O12 single crystal

• DOI: 10.1007/s10854-020-04930-2
• Publication Date: 2021-01-01T21:02:37Z
• Authors: Shoujun Ding; Hao Ren; Hongyuan Li; Aifeng He
• Keywords: 0103 physical sciences; 01 natural sciences

Y3Sc2Ga3O12 (YSGG) single crystal has multifunctional applications in the areas of substrate, scintillator, and laser matrix owing to its unique features of structure, thermal, and optical properties. However, the some basic physical and optical properties of YSGG crystal remain unexplored. In this work, the Vickers hardness, Raman spectrum, thermal properties, as well as laser damage threshold of YSGG single crystal were determined for the first time, to the best of our knowledge. The thermal conductivity of YSGG crystal was decreases with the increase of temperature from 298 to 773 K, and the room-temperature thermal conductivity was determined to be 5.76 W m− 1 K− 1. With 355 nm pulse laser illumination, the laser damage threshold of YSGG crystal was determined to be 5.18 J cm−2. Besides, based on the measured Raman spectrum of YSGG crystal, ten Raman vibrations were assigned. The results provide some valuable insight into YSGG crystal, which are important for the further investigation and application of this crystal.