Surface conduction on poled BaTiO3 single crystals in ultra high vacuum

被引：10

作者：

Urakami, Yosuke ^{[1
]}

Yamato, Mizuki ^{[1
]}

Watanabe, Yukio ^{[1
]}

机构：

[1] Kyushu Univ, Fukuoka 8128581, Japan

来源：

FERROELECTRICS | 2007年 / 346卷

关键词：

surface; surface layer; conduction; phase transition; polarization;

D O I：

10.1080/00150190601180158

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the experimental verifications that the clean free surface of ferroelectric has an intrinsic electron/hole layer, which exists below the ferroelectric phase-transition temperature, by measuring the surface conduction of BaTiO3 single crystals in ultra high vacuum. To our knowledge, the electrically controlled formation of both electron and hole surface conduction layer that are nonvolatile is demonstrated for the first time. The existence of the intrinsic surface electron/hole layer is also a proof that the ferroelectric polarization reaches the top surface, which has important implication in nano-ferroelectrics.

引用

页码：32 / 36

页数：5

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