Structural, thermal expansion and heat capacity study of lead-free [(1-x)(Na0.5Bi0.5)-xBa]Zr1-y Ti y O3 ceramics

被引：6

作者：

Suchanicz, J. ^{[1
]}

Stopa, G. ^{[1
]}

Kusz, J. ^{[2
]}

Zubko, M. ^{[2
]}

Hofmeister, W. ^{[3
]}

Antonova, M. ^{[4
]}

Kalvane, A. ^{[4
]}

Dambekalne, M. ^{[4
]}

Sternberg, A. ^{[4
]}

Jankowska-Sumara, I. ^{[1
]}

Garbarz-Glos, B. ^{[1
]}

Wcislo, D. ^{[1
]}

Konieczny, K. ^{[1
]}

Pytel, K. ^{[5
]}

Finder, A. ^{[6
]}

机构：

[1] Pedag Univ, Inst Phys, PL-30084 Krakow, Poland

[2] Univ Silesia, Inst Phys, PL-40007 Katowice, Poland

[3] Johannes Gutenberg Univ Mainz, Dept Gemstone Res, D-55099 Mainz, Germany

[4] Univ Latvia, Inst Solid State Phys, LV-1063 Riga, Latvia

[5] Pedag Univ, Inst Tech, PL-30084 Krakow, Poland

[6] High Natl Sch, PL-38500 Sanok, Poland

来源：

JOURNAL OF MATERIALS SCIENCE | 2010年 / 45卷 / 06期

关键词：

ELECTRIC PROPERTIES; DIELECTRIC-PROPERTIES; AXIAL PRESSURE; SINGLE-CRYSTAL; BEHAVIOR; NA0.5BI0.5TIO3-PBTIO3; DEPENDENCE; SYSTEM;

D O I：

10.1007/s10853-009-4100-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lead-free ceramics of Na0.5Bi0.5TiO3-Ba(Ti,Zr)O-3 (NBT-BTZ) were prepared by solid phase hot pressing sintering process. The obtained samples show perovskite structure. Structural, the heat capacity, thermal expansion and pyroelectric measurements were made in wide temperature range. The broad anomalies of heat capacity and thermal expansion were observed, which approximately correspond to structural, pyroelectric and dielectric properties. It was concluded that these anomalies can be connected with temperature features of polar regions and with formation of long-range ferroelectric state. The obtained results are discussed in the framework of foreign ions/lattice imperfections, which create local electric and elastic fields. The NBT-BTZ system is expected to be a new promising candidate for lead-free electronic ceramics.

引用

页码：1453 / 1458

页数：6

共 30 条

[1] Lead-free high-strain single-crystal piezoelectrics in the alkaline-bismuth-titanate perovskite family [J].