Dielectric Response of Ba0.5Sr0.5TiO3-Mg2SiO4Composites Synthesized by a Citrate GelIn-SituProcess
| Autor: | Xiaohan Jin, Ludong Ji, Yani Pan, Jiangying Wang, Jingji Zhang |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Permittivity In situ Materials science Composite number 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Electronic Optical and Magnetic Materials visual_art Phase (matter) Scientific method 0103 physical sciences Volume fraction visual_art.visual_art_medium Ceramic Composite material 0210 nano-technology |
| Zdroj: | Ferroelectrics. 492:85-90 |
| ISSN: | 1563-5112 0015-0193 |
| DOI: | 10.1080/00150193.2015.1069920 |
| Popis: | (1-x)Ba0.5Sr0.5TiO3(BST)-xMg2SiO4 (MS) composite ceramics have been synthesized in-situ via a citrate-nitrate combustion process, and their structure and effective dielectric response have been investigated. The compositions with x ≥ 0.3 formed a second phase Ba2TiSi2O8, besides BST and MS phases. The BST-MS composites showed an uniform microstructure with MS particles homogeneously dispersed in BST particles. The temperature at the permittivity maxima of the composites was nearly unchanged with increasing the volume fraction of MS (ƒMS) from 0.1 to 0.4 and then slightly decreased with further increasing ƒMS. According to the modified effective medium approx-imation couple with the spherical inclusion model, the permittivity (ϵBST) of BST in the composites was strongly dependent on ƒMS, which was defined by the relation . |
| Databáze: | OpenAIRE |
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