Preparation of nanosized perovskite LaNiO3 powder via amorphous heteronuclear complex precursor

摘要: Nanosized lanthanum nickel oxide powder LaNiO3 with perovskite structure was successfully synthesized at a relatively low calcination temperature by using an amorphous heteronuclear complex LaNi(DTPA) · 6H2O as precursor. The precursor decomposed completely into above 600°C based on the DTA and TGA results. XRD demonstrated that nanosized crystalline pure obtained after increased to 700°C. effects of time were also examined TEM. results indicated grain size crystal from 900°C, less influenced heat-treatment time. electrical resistivity decreased when increased. It can be concluded it is useful way synthesize oxides precursor, this method easily quantitatively controlled.