Grain and the concomitant ferroelectric domain size dependent physical properties of Ba0.85Ca0.15Zr0.1Ti0.9O3 ceramics fabricated using powders derived from oxalate precursor route
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作者:
Bharathi, P.
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Indian Inst Sci, Mat Res Ctr, Bangalore 560012, Karnataka, IndiaIndian Inst Sci, Mat Res Ctr, Bangalore 560012, Karnataka, India
Bharathi, P.
[1
]
Varma, K. B. R.
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Indian Inst Sci, Mat Res Ctr, Bangalore 560012, Karnataka, IndiaIndian Inst Sci, Mat Res Ctr, Bangalore 560012, Karnataka, India
Varma, K. B. R.
[1
]
机构:
[1] Indian Inst Sci, Mat Res Ctr, Bangalore 560012, Karnataka, India
Fine powders comprising nanocrystallites of Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) were synthesized via oxalate precursor method, which facilitated to obtain homogenous and large grain sized ceramics at a lower sintering temperature. The compacted powders were sintered at various temperatures in the range of 1200 degrees C-1500 degrees C for an optimized duration of 10 h. Interestingly the one that was sintered at 1450 degrees C/10 h exhibited well resolved Morphotrophic Phase Boundary. The average grain size associated with this sample was 30 mu m accompanied by higher domain density mostly with 90 degrees twinning. These were believed to have significant contribution towards obtaining large strain of about 0.2% and piezoelectric coefficient as high as 563 pC/N. The maximum force that was generated by BCZT ceramic (having 30 mu m grain size) was found to be 161 MPa, which is much higher than that of known actuator materials such as PZT (40MPa) and NKN-5-LT (7 MPa). (C) 2014 AIP Publishing LLC.
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Chengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R ChinaChengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R China
Chen, Tao
;
Zhang, Ting
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Chengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R ChinaChengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R China
Zhang, Ting
;
Wang, Guangchang
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Chengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R ChinaChengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R China
Wang, Guangchang
;
Zhou, Jifang
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Chengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R ChinaChengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R China
Zhou, Jifang
;
Zhang, Jianwei
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Chengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R ChinaChengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R China
Zhang, Jianwei
;
Liu, Yuhong
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Chengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R ChinaChengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R China
机构:
Chengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R ChinaChengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R China
Chen, Tao
;
Zhang, Ting
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Chengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R ChinaChengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R China
Zhang, Ting
;
Wang, Guangchang
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Chengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R ChinaChengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R China
Wang, Guangchang
;
Zhou, Jifang
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Chengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R ChinaChengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R China
Zhou, Jifang
;
Zhang, Jianwei
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Chengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R ChinaChengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R China
Zhang, Jianwei
;
Liu, Yuhong
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Chengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R ChinaChengdu Med Coll, Teaching & Res Sect Phys, Chengdu 610083, Peoples R China