Effects of Substitution of Titanium by Iron and Niobium on the Structure and Dielectric Properties in BaTi1-x(Fe0.5Nb0.5)xO3
| Autor: | S. K. Bandyopadhayay, Keka R. Chakraborty, S. N. Singh, T.P. Sinha, A. K. Himanshu, B. K. Choudhary |
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| Rok vydání: | 2010 |
| Předmět: |
Materials science
Rietveld refinement Analytical chemistry Niobium chemistry.chemical_element Dielectric Conductivity Atmospheric temperature range Condensed Matter Physics Electronic Optical and Magnetic Materials Crystallography chemistry Control and Systems Engineering Materials Chemistry Ceramics and Composites Crystallite Electrical and Electronic Engineering Solid solution Titanium |
| Zdroj: | Integrated Ferroelectrics. 117:34-39 |
| ISSN: | 1607-8489 1058-4587 |
| DOI: | 10.1080/10584587.2010.489420 |
| Popis: | Polycrystalline samples of BaTi1-x(Fe0.5Nb0.5)xO3 with x = 0, 0.03, 0.05, 0.1, 1 have been synthesized by high temperature solid state reaction technique. The effects of cationic substitution of iron and niobium for titanium in the B-sites for BaTiO3 perovskites lattice on symmetry and dielectric properties are investigated. X-ray diffraction at room temperature for the composition x = 0.03, 0.05, 0.10 indicates that two solid solutions are found in this system. The field dependences of the dielectric response and the conductivity were measured in a frequency range from 100 Hz to 1MHz and in a temperature range from 294 K to 623 K. The rietveld analysis of Ba(Fe0.5Nb0.5)O3 is found to be cubic with space group of Pm3m and two solid solutions exist in the BaTix(Fe0.5Nb0.5)1-xO3 (0 < x ≤ 0.10) at room temperature of space group of Pm3m and P4mm. |
| Databáze: | OpenAIRE |
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