OBSERVATION OF HIGH DIELECTRIC PERMITTIVITY IN SINGLE-CRYSTAL BI2SR3COO6+DELTA

被引：10

作者：

CHERN, G ^{[1
]}

SONG, LR ^{[1
]}

SHI, JB ^{[1
]}

机构：

[1] FENG CHIA UNIV,DEPT ELECTR ENGN,TAICHUNG,TAIWAN

来源：

PHYSICA C | 1995年 / 253卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(95)00458-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have measured the complex dielectric constants of a c-axis-oriented single-crystal insulating sample of Bi2Sr2CoO6+delta as a function of frequency (10(2)-10(6) Hz) and temperature (80-330 K). A large real dielectric constant (> 10(4)) was found at high temperature and low frequency. This ferroelectric-like polarization results from a thermally activated process with an activation energy of 0.25 eV plus an exponentially increasing temperature-dependent background. Our results support the idea that the high dielectric constant may be a common feature of the high-temperature oxide family.

引用

页码：97 / 101

页数：5

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