Relaxor features in ferroelectric superlattices: A Maxwell-Wagner approach

被引：204

作者：

Catalan, G ^{[1
]}

O'Neill, D ^{[1
]}

Bowman, RM ^{[1
]}

Gregg, JM ^{[1
]}

机构：

[1] Queens Univ Belfast, Sch Math & Phys, Condensed Matter Phys & Mat Sci Res Div, Belfast BT7 1NN, Antrim, North Ireland

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 19期

关键词：

D O I：

10.1063/1.1324729

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A Maxwell-Wagner series capacitor model is proposed to explain anomalous dielectric properties of ferroelectric superlattices. The results of the model show that a superlattice consisting of normal ferroelectric layers separated by low-resistivity interfacial regions can account for most experimental results reported to date, namely: dielectric enhancement for certain stacking periodicities, giant permittivities, and temperature migration of dielectric maxima as a function of frequency. The predictions of the model are discussed and compared to our own experimental results from thin film superlattice capacitors made by pulsed-laser deposition. (C) 2000 American Institute of Physics. [S0003-6951(00)05345-6].

引用

页码：3078 / 3080

页数：3

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