Piezoelectric properties of environmental friendly bismuth doped barium titanate ceramics

被引：23
作者：
Nath, A. K. [1 ]
Medhi, Nirmali [1 ]
机构：
[1] Univ Delhi, Sri Venkateswara Coll, Dept Phys, New Delhi 110021, India
来源：
MATERIALS LETTERS | 2012年 / 73卷
关键词：
Ceramics; Piezoelectric materials; Barium titanate; Perovskite;
D O I：
10.1016/j.matlet.2011.12.113
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Piezoelectric properties of bismuth doped barium titanate ceramics have been investigated. It is found that up to a certain concentration Bi is soluble in BaTiO3 and beyond that additional phase arises. It is clearly confirmed from XRD results. Up to a concentration of 2 wt.% single phase perovskite structure is obtained as the peaks in XRD show. But beyond that concentration additional peak arises which can be assigned due to the phase Bi2Ti2O7. All the piezoelectric properties of the ceramic system have been stalled by the appearance of the additional phase. Good values of piezoelectric charge constant, electromechanical coupling coefficient, strain and remnant polarization indicate that within the solubility limit Bi doped BaTiO3 ceramic system is a promising candidate for lead free environmental friendly ceramic applications. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：75 / 77
页数：3
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