Growth and properties of NaEr(WO4)(2) crystals

Tetragonal scheelite-like single crystals NaEr(Wo(4))(2) (NEW) have been gr own by using RF-heating Czochralski (CZ) method for the first time. X-ray p owder 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 = 1.1265 nm, and V = 0.3045 nm(3). Differential scanning calo rimetry shows that the NEW crystal melts at 1188.5 degreesC, which is lower than that of NYW crystal. Optical properties measurements show that NEW ha s intensive green luminescence emission at 551 nm pumped by LD with a wavel ength of 974 nm, which is a potential for green laser emission running thro ugh up-conversion. (C) 2001 Published by Elsevier Science B.V.