Article
The influence of an electric field on the latent heat of the ferroelectric phase transition in KDP
Author/s | Delgado Sánchez, José María
Martín Olalla, José María Gallardo Cruz, María del Carmen Ramos Vicente, Saturio Koralewski, M. Cerro González, Jaime del |
Department | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Publication Date | 2005-04-15 |
Deposit Date | 2024-05-23 |
Published in |
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Abstract | The specific heat, heat flux (DTA trace) and dielectric constant of KDP ferroelectric crystal have been measured simultaneously for various electric fields with a conduction calorimeter. The specific heat presents a strong ... The specific heat, heat flux (DTA trace) and dielectric constant of KDP ferroelectric crystal have been measured simultaneously for various electric fields with a conduction calorimeter. The specific heat presents a strong anomaly but these simultaneous measurements allow us to evaluate the latent heat accurately. Latent heat decreases with field and the value of critical electric field ---that where latent heat disappears--- is estimated to be (0.44\pm0.03)kV/cm. Incidentally, we have measured simultaneously the dielectric permittivity which s uggests that latent heat is developed as domains are growing. |
Funding agencies | Ministerio de Ciencia Y Tecnología (MCYT). España |
Project ID. | BFM2002-02237 |
Citation | Delgado Sánchez, J.M., Martín Olalla, J.M., Gallardo Cruz, M.d.C., Ramos Vicente, S., Koralewski, M. y Cerro González, J.d. (2005). The influence of an electric field on the latent heat of the ferroelectric phase transition in KDP. Journal of Physics: Condensed Matter, 17, 2645-2654. https://doi.org/10.1088/0953-8984/17/17/012. |
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