Abstract
The dielectric, elastic, and inelastic properties of a ceramic ferroelectric SrBi3Nb2FeO12 are studied over the temperature range 300–900 K. The observed anomalies in the temperature dependences of the permitivity, dielectric loss, shear modulus, and internal friction indicate the occurrence of a structural phase transition in the compound at ∼700 K. It is suggested that the transition is a proper ferroelectric and improper ferroelastic second-order phase transition.
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