High intrinsic permittivity in Na1/2Bi1/2Cu3Ti4O12

被引：65
|
作者：
Ferrarelli, Matthew C. [1 ]
Adams, Timothy B. [1 ]
Feteira, Antonio [1 ]
Sinclair, Derek C. [1 ]
West, Anthony R. [1 ]
机构：
[1] Univ Sheffield, Dept Mat Engn, Sheffield S1 3JD, S Yorkshire, England
来源：
APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 21期
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1063/1.2388251
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The electrical properties of Na1/2Bi1/2Cu3Ti4O12 (NBCTO) ceramics between similar to 8 and 400 K are electrically inhomogeneous, consisting of semiconducting grains and insulating grain boundaries, similar to isostructural CaCu3Ti4O12 (CCTO); however, the intrinsic permittivity of NBCTO of similar to 250 at 10 K is much higher compared to similar to 110 for CCTO. Possible explanations for this high intrinsic permittivity are discussed. (c) 2006 American Institute of Physics.
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页数：3
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