Dielectric and Piezoelectric Properties of Lead-free (Bi0.5Na0.5)TiO3-BaTiO3 Ferroelectric Ceramics

被引：7

作者：

Kuk, Min-Ho ^{[1
]}

Kim, Myong-Ho ^{[1
]}

Cho, Jung-A ^{[1
]}

Sung, Yeon-Soo ^{[1
]}

Song, Tae Kwon ^{[1
]}

Bae, Dong-Sik ^{[1
]}

Jeong, Soon-Jong ^{[2
]}

Song, Jae-Sung ^{[2
]}

机构：

[1] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Gyeongsangnam Do, South Korea

[2] Korea Electrotechnol Res Inst, Elect & Magnet Devices Res Grp, Seongju Dong, South Korea

来源：

KOREAN JOURNAL OF MATERIALS RESEARCH | 2005年 / 15卷 / 11期

关键词：

bismuth sodium titanate; phase transition; morphotropic phase boundary; BNT-BT solid solution;

D O I：

10.3740/MRSK.2005.15.11.583

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structural, piezoelectric and ferroelectric properties of (1-x)(Bi0.3Na05)TiO3-xBaTiO(3) (BNT-BT) (x = 0.00, 0.02, 0.04, 0.06, 0.08, and 0.10) ceramics were investigated. A gradual change in the crystal and microstructures with the increase of BaTiO3 (BT) concentration was observed. The (Bi0.5Na0.5)TiO3 (BNT) samples show unusual properties as ferroelectric relaxor materials. We observed a phase transition in BNT solid solutions with BT having normal ferroelectric phase transition. At room temperature, BNT presents a single phase without the morphotropic phase boundary (MPB). In the case of samples doped with 4 similar to 8 mol% BT, rhombohedral-tetragonal MPB was formed and the piezoelectric properties were improved.

引用

页码：683 / 689

页数：7

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