Large piezoelectricity in Pb-free 0.96(K0.5Na0.5)(0.95)Li0.05Nb0.93 Sb0.07O3-0.04BaZrO(3) ceramic: A perspective from microstructure
Large piezoelectricity in Pb-free 0.96(K0.5Na0.5)(0.95)Li0.05Nb0.93 Sb0.07O3-0.04BaZrO(3) ceramic: A perspective from microstructure
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无铅0.96(K0.5Na0.5)(0.95)Li0.05Nb0.93 Sb0.07O3-0.04BaZrO(3)陶瓷的大压电性：微观结构的视角
DOI：
10.1063/1.4913454
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发表时间：
2015
影响因子：
3.2
通讯作者：
Ren Xiaobing
中科院分区：
文献类型：
--
作者：
Gao Jinghui;Hao Yanshuang;Ren Shuai;Kimoto Takayoshi;Fang Minxia;Li Huiying;Wang Yu;Zhong Lisheng;Li Shengtao;Ren Xiaobing
We employ transmission electron microscopy to explore the reason for large piezoelectricity (d{sub 33}≈400pC/N) in a Pb-free 0.96(K{sub 0.5}Na{sub 0.5}){sub 0.95}Li{sub 0.05}Nb{sub 0.93}Sb{sub 0.07}O{sub 3} −0.04BaZrO{sub 3} ceramic from microstructure. The result shows that the high piezoelectricity corresponds to a miniaturized nanodomain configuration in a domain hierarchy. The nanodomains disappear on heating accompanied by a reduction in d{sub 33} value. Further convergent beam electron diffraction study reveals a coexistence of tetragonal and orthorhombic phase, which indicates that large piezoelectricity of KNLNS{sub 0.07}-BZ may stem from easy polarization rotation due to low polarization anisotropy on the tetragonal-orthorhombic phase boundary.
We employ transmission electron microscopy to explore the reason for large piezoelectricity (d{sub 33}≈400pC/N) in a Pb-free 0.96(K{sub 0.5}Na{sub 0.5}){sub 0.95}Li{sub 0.05}Nb{sub 0.93}Sb{sub 0.07}O{sub 3} −0.04BaZrO{sub 3} ceramic from microstructure. The result shows that the high piezoelectricity corresponds to a miniaturized nanodomain configuration in a domain hierarchy. The nanodomains disappear on heating accompanied by a reduction in d{sub 33} value. Further convergent beam electron diffraction study reveals a coexistence of tetragonal and orthorhombic phase, which indicates that large piezoelectricity of KNLNS{sub 0.07}-BZ may stem from easy polarization rotation due to low polarization anisotropy on the tetragonal-orthorhombic phase boundary.