EFFECT OF PROCESSING CONDITIONS ON ELECTRICAL PROPERTIES OF CaCu3Ti4O12 CERAMICS

被引：4

作者：

Kashyap, Raman ^{[1
]}

Dhawan, Tanuj ^{[1
]}

Gautam, Prikshit ^{[1
]}

Thakur, O. P. ^{[2
]}

Mehra, N. C. ^{[3
]}

Tandon, R. P. ^{[1
]}

机构：

[1] Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India

[2] Solid State Phys Lab, Electroceram Grp, Delhi 110054, India

[3] Univ Delhi, Univ Sci & Instrumentat Ctr, Delhi 110007, India

来源：

MODERN PHYSICS LETTERS B | 2010年 / 24卷 / 12期

关键词：

Ceramics; electrical properties; ferroelectrics; sintering; HIGH-DIELECTRIC-CONSTANT; GRAIN-SIZE; SINTERING CONDITIONS; VOLTAGE;

D O I：

10.1142/S021798491002327X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

CaCu3Ti4O12 (CCTO) ceramics were prepared by the solid-state reaction route. Effect of sintering time was studied on the polarization (P) versus electric field (E) behavior. Unlike conventional ferroelectric hysteresis loop, PE hysteresis behavior in CCTO ceramics was observed to exhibit ferroelectric-like loop where polarization does not saturate but gives a maximum value. Remnant polarization and maximum polarization was observed to increase with sintering time. Current (I)-voltage (V) characteristics shows a nonlinear behavior making them useful for varistor applications. Coefficient of non-linearity (alpha) is also found to depend on sintering duration

引用

页码：1267 / 1273

页数：7

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