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中文摘要：
以Na2O—V2O5为自助熔剂体系，采用顶部籽晶法生长出尺寸为19mm×17mm×5mm的Na3VO2B6O11透明单晶。该晶体属于正交晶系，空间群为P212121，晶胞参数为a=0．77359（9）nm；b=1．01884（12）nm；c=1．25697（15）nm。该晶体在可见光区的双折射率范围为0．037～0．042，紫外吸收边为370nm，非线性光学效应与KDP晶体相当。该晶体易溶于酸，在空气中稳定存在，不易潮解，但沿（100）面易解理。
英文摘要：
A colorless and transparent Na3VO2B6O11 crystal with dimensions 19 mm × 17 mm × 5 mm has been grown by the top-seeded solution growth method using NaEO-V205 as the flux system. It belongs to the orthorhombic system, space group P212121 , and lattice parameters a = 0.77359 （9） nm, b = 1. 01884 （12） nm and c = 1. 25697 （15） nm. The crystal birefringenee value in the visible range is between 0. 037 and 0. 042, the UV cutoff wavelength is about 370 nm, and its powder nonlinear optical effect is similar as that of KDP. NaaVO2B6O11 crystal behaves anti-deliquescence, but can be dissolved in acid. It is easy to cleave along （001） faces.
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