| Journal: | Materials research |
| Database: | PERIÓDICA |
| System number: | 000312698 |
| ISSN: | 1516-1439 |
| Authors: | Guerra, Jose de los Santos1 Eiras, Jose Antonio |
| Institutions: | 1Universidade Federal de Sao Carlos, Departamento de Fisica, Sao Carlos, Sao Paulo. Brasil |
| Year: | 2004 |
| Season: | Abr-Jun |
| Volumen: | 7 |
| Number: | 2 |
| Pages: | 325-328 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Nota breve o noticia |
| Approach: | Experimental |
| English abstract | 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 |
| Keyword: | 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 |
| Full text: | Texto completo (Ver HTML) |
