The ceramic technique, also known as solid-state synthesis, is frequently used to initiate a chemical reaction from solid starting components to create a new solid with a clear structure. End products for energy and electrical applications include polycrystalline materials, single crystals, glasses, and thin-film materials. A mixture of fine-grained metal compounds is pelletized, heated for a predetermined amount of time at a regulated temperature. Extreme conditions, such as high temperatures and pressure, are necessary for some metal compounds, such as metal oxides or salts, to begin reactions in a molten flux or a rapidly condensing vapour phase. Chemistry is frequently described as "shake and bake" or "heat and beat." It's crucial to characterise the reaction rate in solid state synthesis.