Structural and Electrical Properties of Nanocrystalline Barium Strontium Titanate
| Autor: | V.G. Joshi, Krishna G Soni, M.H. Mangrola, Nisha D. Patel |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Diffraction Materials science Strontium carbonate Analytical chemistry Mineralogy 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology 01 natural sciences Ferroelectricity Nanocrystalline material chemistry.chemical_compound chemistry 0103 physical sciences LCR meter Titanium dioxide Barium carbonate 0210 nano-technology |
| Zdroj: | Materials Today: Proceedings. 4:3842-3851 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2017.02.282 |
| Popis: | Barium strontium titanate, Ba x Sr 1 - x Tio 3 (BST) exhibits paraelectric or ferroelectric properties depending upon the specific composition and temperature. Nowadays various methods are presented for synthesis of BST nano-powders with different morphology and properties that makes it suitable for special applications. We have prepared Ba x Sr 1 - x Tio 3 (BST) using solid state reaction method with different Sr/Ba ratio of Barium carbonate (Ba CO 3 ), strontium carbonate (Sr CO 3 ), and titanium dioxide (Ti O 2 ) (x = 0.5 and 0.4). The perovskite structure has been confirmed via X-Ray Diffraction (XRD). The results showed that BST (0.5) and BST (0.4) had peaks at around 32 2 ∘ , 46 2 ∘ and 57 4 ∘ . The crystalline size was found to be 11 to 22 nm using Scherrer’s formula. SEM results for cubic and spherical particles were obtained for both samples. Electrical properties measurements using LCR meter show that for the both BST materials and for increasing Sr content as the temperature and frequency increases capacitance decreases |
| Databáze: | OpenAIRE |
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