Possible incipient ferroelectricity in Mn-doped Na1/2Bi1/2Cu3Ti4O12

被引：17
作者：
Ferrarelli, Matthew C. [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 | 2009年 / 94卷 / 21期
基金：
英国工程与自然科学研究理事会;
关键词：
bismuth compounds; copper compounds; ferroelectric ceramics; manganese; permittivity; semiconductor doping; semiconductor materials; sodium compounds; SRTIO3;
D O I：
10.1063/1.3134488
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The grain semiconductivity of Na1/2Bi1/2Cu3Ti4O12 ceramics is suppressed by several orders of magnitude by Mn-doping and Na1/2Bi1/2Cu2.82Mn0.18Ti4O12 ceramics exhibit high room temperature relative permittivity, epsilon(r), similar to 140. epsilon(r) data at 100 kHz fit the Barrett equation over the range similar to 10-320 K and the magnitude and temperature dependence of epsilon(r) are consistent with incipient ferroelectricity in this compound.
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页数：3
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