Giant dielectric constant in CaCu3Ti4O12 nanoceramics

被引：43
|
作者：
Ahmad, Mohamad M. [1 ,2 ]
机构：
[1] King Faisal Univ, Coll Sci, Dept Phys, Al Ahsaa 31982, Saudi Arabia
[2] Assiut Univ New Valley, Dept Sci & Math, El Kharga 71516, Egypt
来源：
APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 23期
关键词：
CALCIUM COPPER TITANATE;
D O I：
10.1063/1.4811154
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Nanoceramics of CaCu3Ti4O12 (CCTO) were synthesized by mechanosynthesis and spark plasma sintering with grain size of 150-200 nm. Giant dielectric constant properties are observed in the CCTO nanoceramics due to internal barrier layer capacitance (IBLC) effects. Impedance spectroscopy data suggest that the presence of resistive grain boundaries in addition to resistive domain boundaries is the origin of the IBLCs in CCTO nanoceramics. (C) 2013 AIP Publishing LLC.
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页数：4
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