The Synthesis of CaCu3Ti4O12 High Dielectric Ceramics by a Spark Plasma Sintering Method

Xue Feng Ruan; Zhi Yang; Yue Zhang; Jing Shi; Rui Xiong

doi:10.4028/www.scientific.net/KEM.538.250

Paper Titles

Electrical Characteristics of Bismuth Titanate Ceramics and Glass-Ceramics, Containing SiO₂ and Nd₂O₃ as Additives
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Effects of Compositional Variation on the Structure and Properties of Aluminoborosilicate Glasses
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Morphology and Photoluminescence of Zn/ZnO Core-Shell Structures by Water-Boiling Method
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Dielectric Properties of Li₂MgTiO₄ Ceramic System at Microwave Frequency
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The Synthesis of CaCu₃Ti₄O₁₂ High Dielectric Ceramics by a Spark Plasma Sintering Method
p.250

Morphology and Luminescence of ZnS Quantum Dots Encapsulated in UV-Curable Sealant
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Effect of P₂O₅ on Microstructure and Properties of Calcium Aluminoborosilicate Glasses
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Optical Properties of ZnS Embedded into Polyvinyl Alcohol Films
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Effect of Li_0.8Ca_0.2F_1.2 on Sintering and Microwave Dielectric Properties of (Mg_0.95Zn_0.05)(Ti_0.8Sn_0.2)O₄ Ceramics
p.266

HomeKey Engineering MaterialsKey Engineering Materials Vol. 538The Synthesis of CaCu3Ti4O12 High Dielectric...

The Synthesis of CaCu₃Ti₄O₁₂ High Dielectric Ceramics by a Spark Plasma Sintering Method

Abstract:

CaCu₃Ti₄O₁₂ (CCTO) ceramics were synthesized by a spark plasma sintering technique, and then were annealed in air at different temperatures. The characterization methods including X-ray diffraction, X-ray photoelectron spectroscopy indicated that the composition distribution, the valance of the Ti ions of the CCTO ceramics have great dependence on the annealing temperature, which result in that the dielectric properties of the CCTO ceramics have great dependence on the annealing temperature. The annealing at 500 and 700 °C can enhance the dielectric constants greatly, and the dielectric loss at high frequence (1 MHz) reduces with the increase of the annealing temperature. These annealing-dependent dielectric properties are ascribed to the oxygen vacancies and the holes formed in the sintering and annealing treatment.

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Key Engineering Materials (Volume 538)

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250-253

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.538.250

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Online since:

January 2013

Authors:

Xue Feng Ruan, Zhi Yang, Yue Zhang, Jing Shi, Rui Xiong

Keywords:

CaCu₃Ti₄O₁₂, Ceramic, Spark Plasma Sintering Technique

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