The phase formation kinetics of YAP (YAlO3) synthesized through the polymeric precursor method was investigated by thermal analysis, X-ray diffraction and FT-IR spectroscopy.
We demonstrated that the YAP synthesis is highly dependent on the heat and mass transport during all stages of the synthesis
route. In the first stages, during the preparation of amorphous precursor, “hot spots” need to be suppressed to avoid the
occurrence of chemical inhomogeneities. Very high heating rates combined with small amorphous particles are advantageous in
the last stage during the formation of crystalline phase. We were able to synthesize nanosized particles of YAP single phase
at temperatures around 1100 °C for future preparation of phosphors or ceramics for optics.