Field-dependent dielectric permittivity of paraelectric superlattice structures

被引：40

作者：

Christen, HM ^{[1
]}

Knauss, LA ^{[1
]}

Harshavardhan, KS ^{[1
]}

机构：

[1] Neocera, Beltsville, MD 20705 USA

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 1998年 / 56卷 / 2-3期

关键词：

strontium titanate; barium titanate; strontium zirconate; ferroelectricity; strain effects; superlattices;

D O I：

10.1016/S0921-5107(98)00237-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

SrTiO3/SrZrO3 and SrTiO3/BaTiO3 superlattice structures have been grown by pulsed laser deposition, and their dielectric properties have been measured at room temperature and at 77 K. The electric field-dependence of the permittivity of both types of structures exhibits a different behavior from that observed in the corresponding solid solutions Sr(TixZr1-x)O-3 and (BaxSr1-x)TiO3, respectively. For the case of the SrTiO3/SrZrO3 superlattices, the data is compatible with the assumption that strain induces ferroelectricity in the SrTiO3 films at room temperature. (C) 1998 Elsevier Science S.A. All rights reserved.

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页码：200 / 203

页数：4

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