Growth and properties of NaEr(WO₄)₂ crystals

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• 作者：Cheng ; Zhenxiang ; Lu ; Qingming ; Zhang ; Shujun ; Liu ; Junhai ; Yi ; Xiujie ; Song ; Feng ; Kong ; Yongfa ; et. al.
• 关键词：81.10.Fq ; 81.10.Aj ; 81.10.h ; Double tungstate oxide ; Scheelite structure ; Up-conversion
• 刊名：Journal of Crystal Growth
• 出版年：2001
• 出版时间：February, 2001
• 年：2001
• 卷：222
• 期：4
• 页码：797-800
• 全文大小：170 K

文摘

Tetragonal scheelite-like single crystals NaEr(WO₄)₂ (NEW) have been grown by using RF-heating Czochralski (CZ) method for the first time. X-ray powder diffraction experiments show that the crystal has the same structure as NaY(WO₄)₂ (NYW) and its unit cell parameters were calculated as a=b=0.5199nm, c=1.1265nm, and V=0.3045nm³. Differential scanning calorimetry shows that the NEW crystal melts at 1188.5°C, which is lower than that of NYW crystal. Optical properties measurements show that NEW has intensive green luminescence emission at 551nm pumped by LD with a wavelength of 974nm, which is a potential for green laser emission running through up-conversion.