The precursor of composite oxides NdCoO3 was synthesized from Co(NO3)2·6H2O and Nd(NO3)3·nH2O with sol-gel process by microwave irradiation using tartaric acid as complexing agent and ammonia used to control the pH of reaction solution.The precursor was then characterized by TG-DTA.It shows that black powders are successfully prepared when heated at 500,600,700,800 ℃ with Ma-fu furnace.The products obtained were characterized by means of physical techniques including IR and XRD.The results show that under d...