Structural Evolution and Electrical Properties of BaTiO3 Doped with Gd3+
| Autor: | Miguel Pérez Labra, Erika Osiris Ávila Dávila, Aurelio Hernández Ramirez, Juan Pablo Hernández Lara, Pandiyan Thangarasu, Jose Antonio Romero Serrano, Francisco Raúl Barrientos Hernández |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Permittivity
Materials science Dielectric Analytical chemistry Sintering Relative permittivity 02 engineering and technology 01 natural sciences Crystal symbols.namesake Tetragonal crystal system Phase (matter) 0103 physical sciences General Materials Science Materials of engineering and construction. Mechanics of materials 010302 applied physics Mechanical Engineering 021001 nanoscience & nanotechnology Condensed Matter Physics Gd3+ Mechanics of Materials BaTiO3 symbols TA401-492 0210 nano-technology Raman spectroscopy |
| Zdroj: | Materials Research, Vol 20, Iss 2, Pp 538-542 (2017) Materials Research, Volume: 20, Issue: 2, Pages: 538-542, Published: 02 MAR 2017 Materials Research v.20 n.2 2017 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
| ISSN: | 1516-1439 |
| Popis: | BaTiO3 doped with Gd3+ (Ba1-xGdxTi1-x/4O3) was synthesized using the solid-state reaction method with x = 0.001, 0.003, 0.005, 0.01, 0.05, 0.1, 0.15, 0.20, 0.25, 0.30, and 0.35 Gd3+ (wt. %). The powders were decarbonated at 900 ºC and sintered at 1400 ºC for 8 hours. The tetragonality of the synthesized Gd3+-doped BaTiO3 particles was analyzed. XRD patterns and Raman spectra revealed that the crystal phase of the obtained particles was predominately tetragonal BaTiO3; the intensity of the Raman bands at 205 cm−1, 265 cm−1, and 304 cm−1 decreased when Gd3+ was increased. A secondary phase (Gd2Ti2O7) was found when the Gd3+ content was higher than 0.15 wt. %. The capacitance of the sintering pellets was measured at 1 kHz; these values were used to calculate the relative permittivity, the maximum permittivity values were recorded for the samples with x = 0.001, 0.005, and 0.1. |
| Databáze: | OpenAIRE |
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