A New Way to Prepare Nano Scale Complicated Oxide Ceramics Using An Amorphous Heteronuclear Complex

摘要

A new way to prepare nano scale complicated oxide materials using amorphous heteronuclear complex as a precursor has been carried out in this paper. GdCuO_4 cuprate oxide was prepared using this way. The precursor was Gd_2Cu(DTPA)_(1.6).6H_2O amorphous complex. DTA and TGA indicated that the precursor can be decomposed into oxide below 500℃. XPS indicated that the GdCuO_4 cuprate oxide were formed after the precursor was calcined at 500℃ for 2 hours. XRD also proved the crystalline phase of Gd_2CuO_4 cuprate can be obtained when the calcination temperature increased to 650℃. The crystalline size of Gd_2CuO_4 increased linearly from 20 nm to 50 nm when the calcination temperature increases from 500℃ to 800℃ for 2 hours, and the size increases from 10 nm to 30 nm when the calcination time increased from 1 to 8 hours at 500℃.