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Publication
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| Title of Article |
Microstructural evolution and strongly enhanced dielectric response in
Sn-doped CaCu3Ti4O12/CaTiO3 ceramic composites |
| Date of Acceptance |
16 January 2016 |
| Journal |
| Title of Journal |
Materials Research Bulletin |
| Standard |
SCOPUS |
| Institute of Journal |
Elsevier Ltd. |
| ISBN/ISSN |
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| Volume |
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| Issue |
77 |
| Month |
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| Year of Publication |
2016 |
| Page |
178–184 |
| Abstract |
Sn4+-doped CaCu3Ti4O12/CaTiO3 composites were prepared using a solid state reaction method
employing a simple one-step process. A minor phase of CaTiO3 grains was very well dispersed into the
CaCu3Ti4O12 matrix and these two phases were clearly separated from each other in CaTiO3/CaCu3Ti4O12.
The grain size of the CaCu3Ti4O12 phase was largely enhanced by Sn4+ doping. Furthermore, CaTiO3 grains
were also found inside the enlarged CaCu3Ti4O12 grains. The microstructural evolution can be described
based upon liquid phase sintering and the pinning effect by second-phase particles. The dielectric
permittivity of Sn4+-doped CaCu3Ti4O12/CaTiO3 was greatly enhanced from 2 103 to 0.6–1.3 104 at103 Hz, while, the dielectric loss tangent was still low. The nonlinear properties were degraded as a main
result of microstructural evolution. These results strongly indicated an extrinsic effect upon both of the
giant dielectric response and nonlinear properties of CaCu3Ti4O12-based compounds.Ceramics
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| Keyword |
Ceramics A. Composites, Microstructure, Impedance spectroscopy, Dielectric properties |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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