CHARGE PUMPING AND PSEUDOPYROELECTRIC EFFECT IN ACTIVE FERROELECTRIC RELAXOR-TYPE FILMS

被引：154

作者：

SCHUBRING, NW

MANTESE, JV

MICHELI, AL

CATALAN, AB

LOPEZ, RJ

机构：

[1] Electrical and Electronics Engineering Department, General Motors Research Laboratories, Warren

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.68.1778

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Unidirectional charge flow was observed in potassium tantalum niobate, KTa0.6Nb0.4O3, films. These films of relaxor-type diffuse phase transition material were formed by metalorganic deposition and had a polarization gradient normal to the surface of the films. Novel charge pumping was observed in the active operation of simple two-terminal structures by excitation with periodic, strong electric fields. Such operation also showed a large pseudopyroelectric response. Effective pyroelectric coefficients as large as 2 x 10(-5) C/cm2-degrees-C have been obtained.

引用

页码：1778 / 1781

页数：4

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