| Title |
Properties of TiO_2-V_2O_5 Ceramics Prepared by Sol-Gel Method |
| Keywords |
TiO_2-V_2O_5 sol ; sol-gel method ; DTA properties ; crystalline properties ; the capacitance of thin films |
| Abstract |
[ TiO_2-V_2O_5 ] sol was prepared using sol-gel method. Sol changed to gel with hydrolysis and polymerization. DTA properties of gel powder had endothermic reaction due to evaporation of propanol about 80°C, had exothermic reaction due to combustion of propanol about 230°C and had exothermic reaction due to combustion of alkyl group about 350°C. Crystalline properties of gel powder retained amorphous phase at 50°C, retained anatase phase from 400°C to 600°C and had all rutile phase over 700°C at 0.01mole V_2O_5 additive. The capacitance of thin films increased with increasing heat treatment temperature and thin films had best properties at 700°C. The capacitance of thin films increased a lot with decreasing measurement frequency. |