Dielectric, Ferroelectric, and Strain Study of BNT-BT-BKT Ceramics for Actuator Applications

被引：12
作者：
Chandrasekhar, M. [1 ,2 ]
Reddy, Y. Govinda [3 ]
Kumar, P. [1 ]
机构：
[1] Natl Inst Technol, Dept Phys & Astron, Rourkela 769008, Odisha, India
[2] CVR Coll Engn Autonomous, Dept Phys, Hyderabad 501510, Telangana, India
[3] Osmania Univ, Univ Coll Sci, Dept Phys, Hyderabad, India
来源：
JOURNAL OF ELECTRONIC MATERIALS | 2020年 / 49卷 / 12期
关键词：
Actuator; strain; microstructure; thermal analysis; FIELD-INDUCED STRAIN; ENERGY-STORAGE PROPERTIES; PIEZOELECTRIC PROPERTIES; ELECTRICAL-PROPERTIES; KNN CERAMICS; NANBO3; BEHAVIOR;
D O I：
10.1007/s11664-020-08493-0
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：
The 0.88Bi(0.5)Na(0.5)TiO(3)-0.04BaTiO(3)-0.08Bi(0.5)K(0.5)TiO(3)(BNT-BT-BKT) ceramics were synthesized by a conventional solid-state reaction, and their structural, dielectric, polarization versus electric field (P-E), and induced strain versus electric field (S-E) properties were studied in detail. The structural study confirmed the morphotropic phase boundary nature of the ceramics. The depolarization temperature (T-d) and Curie temperature (T-c) were found to be similar to 70 degrees C and 299 degrees C, respectively, which correspond to ferroelectric to antiferroelectric and antiferroelectric to paraelectric phase transitions, respectively. Remnant polarization (P-r) of similar to 22 mu C/cm(2), a coercive field (E-c) of similar to 22 kV/cm, and an electric field-induced maximum strain% of similar to 0.63 were observed in the ceramics. as well as good ferroelectric properties, the high induced strain% points to the usefulness of this system for actuator applications.
引用
收藏
页码：7238 / 7243
页数：6
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