Lead scandium tantalate (often abbreviated as PST) is a complex oxide material with the chemical formula \( \text{PbSc}_{0.5}\text{Ta}_{0.5}\text{O}_3 \). It is part of a class of materials known as piezoelectric ceramics, which are capable of generating an electric charge in response to mechanical stress, and conversely, can change shape when an electric field is applied.
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