The sensitivity of this property to strain is explained by Landau-Devonshire theory for (*) poled bulk materials.
This property can be induced by spiral spin ordering in magnetically frustrated materials. The eponymous Burns temperature along with nanoclusters and a neutral matrix are seen in the relaxor type of materials with this property. Materials with this property are often classified as either hydrogen-bonded or double oxides. The sensitivity of this property to strain is explained by Landau-Devonshire theory for (*) poled bulk materials. The hysteresis associated with this property can be measured via a Sawyer-Tower circuit. Non-volatile RAM named after this can be made with a thin film of PZT, or lead zirconate titanate, a perovskite with this property. All materials with this property are both piezoelectric and pyroelectric, and the first discovered material with this property was Rochelle salt. For 10 points, name this property not seen above the Curie point and possessed by materials whose electric polarization is reversed by an electric field.
This property can be induced by spiral spin ordering in magnetically frustrated materials.
ferroelectricity [or ferroelectric; prompt on either "piezoelectricity" or "pyroelectricity"; Editor's Note: It's named after ferromagnetism]