Article
Deuteration effect on tricritical phase transition of triglycine selenate: Calorimetric and dielectric measurements analyzed in the framework of Landau theory
Author/s | Romero Landa, Francisco Javier
![]() ![]() ![]() ![]() ![]() ![]() ![]() Gallardo Cruz, María del Carmen ![]() ![]() ![]() ![]() ![]() ![]() Martín Olalla, José María ![]() ![]() ![]() ![]() ![]() ![]() ![]() Cerro González, Jaime del |
Department | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Publication Date | 2010 |
Deposit Date | 2019-10-15 |
Published in |
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Abstract | The ferroelectric phase transition of three single crystals of TGSe1−x DTGSex has been described
by using specific heat, latent heat, and dielectric permittivity measurements. Pure, half-deuterated,
and highly-deuterated ... The ferroelectric phase transition of three single crystals of TGSe1−x DTGSex has been described by using specific heat, latent heat, and dielectric permittivity measurements. Pure, half-deuterated, and highly-deuterated TGSe single crystals were analyzed. Transition temperature and latent heat increase with increasing deuteration. Irrespective of the degree of deuteration, a 2-4-6 Landau model is suitable to describe the phase transition. The fourth-rank prefactor in Landau potential is found to be very sensitive to deuteration while the second-rank and the sixth-rank prefactors smoothly change with composition. The pyroelectric figure of merit for these materials has also been derived from the theoretical model. |
Project ID. | FIS2006-04045
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Citation | Romero Landa, F.J., Gallardo Cruz, M.d.C., Martín Olalla, J.M. y Cerro González, J.d. (2010). Deuteration effect on tricritical phase transition of triglycine selenate: Calorimetric and dielectric measurements analyzed in the framework of Landau theory. Journal of Applied Physics, 107 (12), 124110. |
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