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Structural, ferroelectric and piezoelectric properties of Mn-modified BiFeO3-BaTiO3 high-temperature ceramics
被引:32
作者:
Cen, Zhenyong
[1
]
Zhou, Changrong
[1
]
Yang, Huabin
[1
]
Zhou, Qin
[1
]
Li, Weizhou
[2
]
Yuan, Changlai
[1
]
机构:
[1] Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guilin 541004, Guangxi, Peoples R China
[2] Guangxi Univ, Sch Mat Sci & Engn, Nanning 530004, Guangxi, Peoples R China
关键词:
HIGH CURIE-TEMPERATURE;
ZIRCONATE-TITANATE CERAMICS;
ELECTRICAL-PROPERTIES;
THERMAL-STABILITY;
SOLID-SOLUTION;
(1-X)BISCO3-XPBTIO(3);
DEPENDENCE;
SENSOR;
D O I:
10.1007/s10854-013-1346-4
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:
Mn modified BiFeO3-BaTiO3 (abbreviated as BFBT-Mnx%, x = 0.1, 0.3, 0.6, 0.9, 1.2) high-temperature lead-free ceramics were prepared by conventional oxide-mixed method and the effect of Mn doping on microstructure and electrical properties was investigated. The solid solutions show a single phase perovskite structure, and the content of Mn has a significant effect on the microstructure of ceramics. The addition of Mn can induce combinatory "hard" and "soft" piezoelectric characteristics due to aliovalent substitutions. In particular, x = 0.6 BFBT-Mnx% ceramic, with a Curie temperature, T (c), of similar to 463 A degrees C, shows optimum piezoelectric properties of d (33) = 131pC/N, k (p) = 0.298. The simultaneous existence of good piezoelectric properties and high T (c) makes these ceramics suitable for elevated temperature piezoelectric devices.
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页码:3952 / 3957
页数:6
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