标题：Growth and characteristic of YbAl3(BO3)4crystal
作者：Li, Jing ;Zhao, Hongyang ;Wang, Jiyang ;Liang, Ximin ;Wang, Xuping
作者机构：[Li, Jing ;Zhao, Hongyang ;Wang, Jiyang ;Liang, Ximin ;Wang, Xuping ] State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Ch 更多
来源：Journal of Rare Earths
摘要：YbAl3(BO3)4crystal of good optical quality was grown by the flux method. The structure of YbAl3(BO3)4crystal was determined by single-crystal X-ray diffraction. The experiment shows that YbAl3(BO3)4belongs to the double borates with a trigonal structure. The space group is R32and its unit cell constants were measured to be a = 0.92965 nm, c =0.72129 nm, V = 0.53673 nm3, Z =3. The transmittance spectra were measured. The cut-off of YbAl3(BO3)4crystal is 216 nm, and there are two absorption peaks located at 940 and 975 nm from 190 nm to 2600 nm. The thermal properties of YbAl3(BO3)4crystal were studied for the first time. The average thermal expansion coefficients were determined to be 2 × 10-6/°C, 9.5 × 10-6/°C along a-and c-direction. The specific heat of YbAl3(BO3)4crystal was measured to be 0.6695 J·(g·°C)-1at room temperature. All results indicate that the YbAl3(BO3)4crystal is an excellent stoichiometric laser material.