Observational analysis reveals enhanced permittivity and ferroelectricity in thin-film strontium titanate, suggesting applications in advanced electronics.
We show that thin-film strontium titanate can exhibit a high gigahertz permittivity and ferroelectricity at cryogenic temperatures. The symmetry breaking due to ferroelectricity results in a Pockels coefficient that surpasses that of lithium niobate.
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Brahim et al. (2025) studied this question.
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