Ferro- and piezoelectric properties of polar-axis-oriented CaBi4Ti4O15 films

被引：41

作者：

Kato, K ^{[1
]}

Fu, DS ^{[1
]}

Suzuki, K ^{[1
]}

Tanaka, K ^{[1
]}

Nishizawa, K ^{[1
]}

Miki, T ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Moriyama Ku, Nagoya, Aichi 4638560, Japan

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 19期

关键词：

D O I：

10.1063/1.1738521

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Polar-axis-oriented CaBi4Ti4O15 (CBTi144) films were fabricated on Pt foils using a complex metal alkoxide solution. The 500-nm-thick film showed the columnar structure and consisted of well-developed grains. The a/b-axis orientation of the ferroelectric films is considered to be associated with the preferred orientation of Pt foil. The film showed good ferro- and piezoelectric properties. The P-r and E-c were 25 muC/cm(2) and 306 kV/cm, respectively, at an applied voltage of 115 V. The d(33) was characterized as 30 pm/V by piezoresponse force microscopy. The values were twice as large as those of the CBTi144 thin film with random orientation. The polar-axis-oriented CBTi144 films would open up possibilities for devices as Pb-free piezoelectric materials. (C) 2004 American Institute of Physics.

引用

页码：3771 / 3773

页数：3

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