When the ice melts out, a second phase other than water and ice appears. I believe similar phenomena are occurring in ceramic firing. When the ceramic is baking, Do not raise the temperature until it becomes liquid. Although it is solid, there are some components close to the melting point. It turns into a liquid and becomes solid again as it becomes frozen. When the liquid component becomes solid Oxidation becomes insufficient, It is the idea to disturb the insulation properties. In order not to make this liquid component, Firing at low temperature, It is firing at high temperature to oxidize the resulting liquid component. This is because When sintering at 700 degrees, leakage current of SrBi2Ta2O9 (SBT) film is small, Even though it is even 800 degrees, The fact that if the firing is done at 750 degrees, the leakage current of SBT increases. It can be explained. For the crystallization of bismuth layered ferroelectric SrBi 2Ta2O9, Oxygen partial press...