Maxwell-Wagner polarization mechanism in potassium and titanium doped nickel oxide showing giant dielectric permittivity

被引：59

作者：

Jana, Pradip Kumar

Sarkar, Sudipta

Chaudhuri, B. K. ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Dept Solid State Phys, Kolkata 700032, W Bengal, India

[2] Deshabandhu Vidyapith HS, Kolkata 100011, W Bengal, India

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2007年 / 40卷 / 02期

关键词：

D O I：

10.1088/0022-3727/40/2/033

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

KxTiyNi1-x-yO ( x = 0.05-0.3, y = 0.02-0.25) ceramics ( abbreviated as KTNO) have been synthesized showing high permittivity. All the KTNO samples of varying compositions exhibit high dielectric permittivity (similar to 10(4)) near room temperature, which is comparable to that of the recently discovered CaCu3Ti4O12 ( CCTO) ceramic. The high dielectric constant of KTNO depends on both the K and Ti content and can be attributed to the Maxwell-Wagner polarization mechanism and to a thermally activated mechanism.

引用

页码：556 / 560

页数：5

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