Low-temperature sintering and electric properties of BCT-BZT and BCZT lead-free ceramics

被引：29

作者：

Tian, Yongshang ^{[1
]}

Gong, Yansheng ^{[1
]}

Meng, Dawei ^{[1
]}

Deng, Hao ^{[1
]}

Kuang, Boya ^{[1
]}

机构：

[1] China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2015年 / 26卷 / 06期

关键词：

DIELECTRIC-PROPERTIES; PHASE-TRANSITION; PIEZOELECTRICITY; COEXISTENCE; BEHAVIOR; CA)(TI; (BA;

D O I：

10.1007/s10854-015-2898-2

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Dielectric, ferroelectric, and piezoelectric properties between 0.33Ba(0.8)Ca(0.2)TiO(3)-0.67BaTi(1-x) Zr (x) O-3 (BCT-BZT) and Ba0.934Ca0.066Ti1-x Zr (x) O-3 (BCZT) lead-free ceramics, which were sintered at 1260 A degrees C in atmosphere with different as-prepared nanoparticles, were studied. XRD results showed the evidence of the phase transitions and morphotropic phase boundary (MPB) regions of BCT-BZT and BCZT ceramics. The phase transitions in the triple point showed a sensitive variation of electric properties around MPB regions. The excellent electric properties (epsilon (r) = similar to 9000, P (r) = 35.6 mu C/cm(2), and d (33) = similar to 240 pC/N) were found in BCT-BZT ceramics. Spontaneous polarization states, defect dipole, and pinch effect were considered to be the important factors that influenced the electric properties. Moreover, study on the excellent electric properties around the triple point of BaTiO3-based ceramics by different process would give a proposal for their practical production.

引用

页码：3750 / 3756

页数：7

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