Er∶Lu_(2)O_(3)单晶的导模法生长及性能表征

Growth and Property Characterization of Er∶Lu_(2)O_(3)Single Crystals by EFG Method

本文以高纯Lu_(2)O_(3)、Er2 O3为原料,使用自主设计、制造的自动等径导模炉,采用导模法(EFG)生长了ϕ25 mm×20 mm的7.82%(原子数分数)Er∶Lu_(2)O_(3)单晶,分凝系数为0.92,并探索了退火条件。X射线衍射仪(XRD)结果为纯相,X射线荧光光谱仪(XRF)结果证明杂质含量较低。利用吸收光谱计算在972 nm及1535 nm附近的吸收截面,分别为3.24×10^(-21)cm^(2)、8.43×10^(-21)cm^(2),半峰全宽(FWHM)分别为28.22 nm、27.31 nm。热学性能测试结果表明,在30℃时热导率为13.28 W·m^(-1)·K^(-1)。利用扫描电子显微镜(SEM)对晶体表面微观形貌进行了表征。

The high-purity Lu_(2)O_(3)and Er2 O3 were used as raw materials,using independently design and manufacture automatic equal diameter EFG furnace,7.82%(atomic fraction)Er∶Lu_(2)O_(3)single crystal ofϕ25 mm×20 mm was grown by the EFG method,and the segregation coefficient is 0.92.Annealing conditions were explored.XRD result is a pure phase,and the XRF result proves that the impurity content is low.The absorption cross-sections around 972 nm and 1535 nm are calculated using absorption spectra to be 3.24×10^(-21)cm^(2)and 8.43×10^(-21)cm^(2),and FWHM are 28.22 nm and 27.31 nm,respectively.The thermal property test results show that the thermal conductivity is 13.28 W·m^(-1)·K^(-1)at 30℃.The crystal surface micromorphology was characterized by SEM.