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Pure and chromium-doped CCTO (CaCu 3 Ti 4 O 12 ) ceramics were prepared by a conventional solid-state reaction method, and the effects of chromium doping on the microstructures and electrical properties of these ceramics were investigated. Efficient crystalline phase formation accompanied by dopant-induced lattice constant expansion was confirmed through X-ray diffraction studies...
A network microstructure with large grains isolated from one another by the regions constituted with the agglomerated fine grains of CCTO ceramics fabricated by sol–gel processing has been investigated. The temperature dependence of dielectric properties associated with the contribution of grain below 90°C, grain boundary in the temperature range of 90–250°C, and electrode interface above 250°C has...
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