The X-ray powder diffraction analysis was used to confirm the tiny physical phase of the product. Grown crystals were ground using iably an agate mortar and pestle in order to determine the crystal with phases by XRD. The XRD analysis (SAIFERT, 2002 DLx model) was ition performed using a tube voltage and current of 40 kV and 30 mA, of respectively. The X-ray powder diffraction patterns of pure KDP RDP crystal and doped KDP (5 M% K2co3) crystal are identical.