Structural, dielectric and piezoelectric study of Ca-, Zr-modified BaTiO3 lead-free ceramics

被引：0

作者：

Msouni, H. ^{[1
,3
]}

Tachafine, A. ^{[2
]}

El Aatmani, M. ^{[1
]}

Fasquelle, D. ^{[2
]}

Carru, J. C. ^{[2
]}

El Hammioui, M. ^{[3
]}

Rguiti, M. ^{[4
]}

Zegzouti, A. ^{[1
]}

Outzourhit, A. ^{[5
]}

Daoud, M. ^{[1
]}

机构：

[1] Univ Cadi Ayyad, Fac Sci Semlalia, Equipe Sci Mat Inorgan & Leurs Applicat, BP 2390, Marrakech, Morocco

[2] Univ Littoral Cote dOpale, Unite Dynam & Struct Mat Mol, BP 717, F-62228 Calais, France

[3] Univ Cadi Ayyad, Fac Sci Semlalia, Lab React Mat & Optimisat Proc, BP 2390, Marrakech, Morocco

[4] Univ Valenciennes & Hainaut Cambresis, Lab Mat Ceram & Proc Associes, F-59600 Maubeuge, France

[5] Univ Cadi Ayyad, Fac Sci Semlalia, Lab Phys Solide & Couches Minces, BP 2390, Marrakech, Morocco

来源：

BULLETIN OF MATERIALS SCIENCE | 2017年 / 40卷 / 05期

关键词：

BCTZ; sintering; grain size; dielectric properties; piezoelectric properties; ELECTROMECHANICAL RESPONSE; SINGLE-CRYSTALS; PROPERTY; BEHAVIOR; STRAIN;

D O I：

10.1007/s12034-017-1445-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We prepared a lead-free ceramic (Ba0.85Ca0.15)(Til-xZrx)O-3 (BCTZ) using the conventional mixed oxide technique. The samples were prepared by an ordinary mixing and sintering technique. In this study we investigated how small amounts of Zr4+ can affect the crystal structure and microstructure as well as dielectric and piezoelectric properties of BaTiO3. X-ray diffraction analysis results indicate that no secondary phase is formed in any of the BCTZ powders for 0 <= x <= 0.1, suggesting that Zr4+ diffuses into BaTiO3 lattices to form a solid solution. Scanning electron microscopy micrographs revealed that the average grain size gradually increased with Zr4+ content from 9.5 mu m for x = 0.02 to 13.5 mu m for x = 0.1; Curie temperature decreased due to the small tetragonality caused by Zr4+ addition. Owing to the polymorphic phase transition from orthorhombic to tetragonal phase around room temperature, it was found that the composition x = 0.09 showed improved electrical properties and reached preferred values of d(33) = 148 pC N-1 and K-p = 27%.

引用

页码：925 / 931

页数：7

共 34 条

[1] Phase transition behavior and enhanced electromechanical properties in (Ba0.85Ca0.15)(ZrxTi1-x)O3 lead-free piezoceramics [J].