Revista: | Materials research |
Base de datos: | PERIÓDICA |
Número de sistema: | 000312698 |
ISSN: | 1516-1439 |
Autors: | Guerra, Jose de los Santos1 Eiras, Jose Antonio |
Institucions: | 1Universidade Federal de Sao Carlos, Departamento de Fisica, Sao Carlos, Sao Paulo. Brasil |
Any: | 2004 |
Període: | Abr-Jun |
Volum: | 7 |
Número: | 2 |
Paginació: | 325-328 |
País: | Brasil |
Idioma: | Inglés |
Tipo de documento: | Nota breve o noticia |
Enfoque: | Experimental |
Resumen en inglés | Dielectric measurements of lanthanum modified lead titanate ceramics were carried out in a frequency and temperature range of 70 ´ 10(6)Hz - 2 ´ 10(9)Hz and 300 K - 420 K, respectively. Dielectric relaxation appears around 7 ´ 10(8)Hz at room temperature, and the maximum of the dielectric relaxation was around 393 K, the transition temperature (Tc). The relaxation frequency passes through a minimum at Tc and the dielectric relaxation exists in both paraelectric and ferroelectric phases. A fitting of the experimental data with the Debye relations gives some keys for understanding the dielectric behavior of such materials |
Disciplines | Ingeniería, Física y astronomía |
Paraules clau: | Ingeniería de materiales, Ingeniería eléctrica, Electromagnetismo, Propiedades eléctricas, Cerámica, Ferroeléctricos, Dieléctricos |
Keyword: | Engineering, Physics and astronomy, Electrical engineering, Materials engineering, Electromagnetism, Electrical properties, Ceramics, Ferroelectrics, Dielectrics |
Text complet: | Texto completo (Ver HTML) |