58823-88-4Relevant articles and documents
Elastic anomalies in antiferroelectric betaine phosphate
Maeda, Masaki
, p. 3059 - 3063 (2008/10/08)
Temperature dependences of elastic compliance coefficients S11, S22 and S33 are measured on betatine phosphate. Small anomalies are found at the structural phase transition (T1 = 365 K) in all the three components. At the antiferroelectric phase transition temperature (T2 = 86 K) a large anomaly is observed in the component S22. Below the antiferroelectric phase transition a clear step-shape anomaly is found in S22. This anomaly will be due to a new phase transition. Phenomenological theories are proposed for the structural phase transition and antiferroelectric phase transition.