In this work, CaWO4 nanoparticles have been synthesized by microwave-assisted method at a low temperature of 120�°C. The asprepared\r\npowders were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), and Fourier\r\ntransforminfrared spectroscopy (FT-IR). It is found that the reaction time played an important role in the morphology controlling\r\nand crystallinity level of CaWO4 crystals. The effects of photoluminescent properties have a great relationship with crystallinity.
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