Low temperature sintering and piezoelectric properties of CuO-doped (K0.5Na0.5)NbO3 ceramics

被引：29

作者：

Ahn, Cheol-Woo ^{[1
]}

Karmarkar, Makarand ^{[1
]}

Viehland, Dwight ^{[1
]}

Kang, Dong-Heon ^{[2
]}

Bae, Kyoo-Sik ^{[2
]}

Priya, Shashank ^{[1
]}

机构：

[1] Virginia Polytech Inst & State Univ, Dept Mat Sci & Engn, Blacksburg, VA 24061 USA

[2] Suwon Univ, Dept Elect Mat Engn, Hwaseong City 445743, GyeongGi Do, South Korea

来源：

FERROELECTRICS LETTERS SECTION | 2008年 / 35卷 / 3-4期

关键词：

(Na0.5K0.5)NbO3; low temperature sintering; lead-free ceramics; piezoelectric properties;

D O I：

10.1080/07315170802353058

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

(Na0.5K0.5)NbO3 ceramics require sintering below 1,000 degrees C to avoid the problem of Na-volatilization which results in lower resistivity. In this study we report the effect of CuO on the sintering behavior of (Na0.5K0.5)NbO3 ceramics. It was found that (Na0.5K0.5)NbO3 + 1.5 mol% CuO ceramics sintered at 950 degrees C for 2 hr exhibit excellent piezoelectric properties of d(33) = 100 pC/N, k(p) = 0.36, and Q(m) = 1200. The remanent polarization and coercive field of this composition were of the order of 21.94 mu C/cm(2) and 1.2 kV/mm. These results are very promising for the hard lead free piezoelectric ceramics.

引用

页码：66 / 72

页数：7

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