标题:Remarkably Strong Piezoelectricity of Lead-Free (K_(0.45)Na_(0.55))_(0.98)Li_(0.02)(Nb_(0.77)Ta_(0.18)Sb_(0.05))O_3 Ceramic
作者:Yong Gao;Jialiang Zhang;Yalin Qing
作者机构:[Gao, Y] School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;[ Zhang, J] School of Physics, State K 更多
通讯作者:Zhang, J
通讯作者地址:[Zhang, JL]Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Peoples R China.
来源:Journal of the American Ceramic Society
出版年:2011
卷:94
期:9
页码:2968-2973
DOI:10.1111/j.1551-2916.2011.04468.x
摘要:Various lead-free (K_xNa_(1-x))_(0.98)Li_(0.02)(Nb_(0.82-y)Ta_(0.18)Sb_y)O_3 ceramics with x = 0.50, y = 0.00-0.07 or x = 0.40-0.60, y = 0.05 were prepared by the conventional solid-state reaction method. Systematic investigation on the microstructures, crystalline structures, and dielectric and piezoelectric properties was carried out. Remarkably strong piezoelectricity has been achieved in (K_(0.45)Na_(0.55))_(0.98)Li_(0.02)(Nb_(0.77)Ta_(0.18)Sb_(0.05))O_3 ceramic, which shows the excellent piezoelectric properties of d_(33) = 413 pC/N, d_(31) = -153 pC/N, k_p = 0.50, and k_(33) = 0.62. It is considered that the observed strong piezoelectricity should be ascribed to several combined decisive factors, such as the phase coexistence due to an orthorhombic-tetragonal polymorphic phase transition near room temperature, the high electronegativity of Sb~(5+) ions as compared with those of Nb~(5+) ions and Ta~(5+) ions, and the relatively ideal microstructure with high density, large average grain size and narrow grain-size distribution.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:77
Scopus被引频次:90
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052989972&doi=10.1111%2fj.1551-2916.2011.04468.x&partnerID=40&md5=5d5b9093c06e7f7b6b85b0166d0d0623
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