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
收藏
页码：683 / 689
页数：7
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