Abstract
Relaxor ferroelectric materials, such as Pb[(Mg0.33Nb0.67)1-xTix]O3 (PMN-PT) with generic stoichiometry, undergo a ferroelectric-to-paraelectric phase transition as a function of temperature. The exact transition characterized by Curie temperature (Tc) varies as a function of chemistry (x), i.e., the concentration of Ti. In this study, we investigated the structural phase transition by exploring the temperature dependence of the single-crystal elastic properties of Pb[(Mg0.33Nb0.67)0.7Ti0.3]O3, i.e., x≈0.3. We used resonant ultrasound spectroscopy to determine the elasticity at elevated temperatures, from which Tc=398±5K for PMN-PT (x≈0.3) was determined. We report the full elastic constant tensor (Cij={C11,C12,C44}), acoustic attenuation (Q-1), longitudinal (VP) and shear (VS) sound velocities, and elastic anisotropy of PMN-PT as a function of temperature for 400Tc.
Document Type
Article
DOI
https://doi.org/10.1103/PhysRevB.96.134108
Rights Information
© 2017 American Physical Society
Publication Date
10-13-2017
Recommended Citation
Tennakoon, Sumudu, Joseph Gladden, Mainak Mookherjee, Tiglet Besara, and Theo Siegrist. "Temperature-dependent elasticity of Pb [(M g 0.33 N b 0.67) 1− x T i x] O 3." Physical Review B 96, no. 13 (2017): 134108.
Journal Title
Physical Review B
