Barium titanate can exist in both the cubic and tetragonal crystal structures. Explain why the tetragonal form exhibits piezoelectricity whereas its cubic form does not. The transformation from cubic to tetragonal BaTiO3 occurs when the former is cooled below the Curie temperature of 120 ◦C. Describe how the change can be verified experimentally based on measurements made at ambient temperature.
Barium titanate can exist in both the cubic and tetragonal crystal structures. Explain why the tetragonal form exhibits piezoelectricity whereas its cubic form does not. The transformation from cubic to tetragonal BaTiO3 occurs when the former is cooled below the Curie temperature of 120 ◦C. Describe how the change can be verified experimentally based on measurements made at ambient temperature.
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Barium titanate can exist in both the cubic and tetragonal crystal structures. Explain why the tetragonal form exhibits piezoelectricity whereas its cubic form does not.
The transformation from cubic to tetragonal BaTiO3 occurs when the former is cooled below the Curie temperature of 120 ◦C. Describe how the change can be verified experimentally based on measurements made at ambient temperature.
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