标题:Enhancement of the piezoelectric properties of sodium lanthanum bismuth titanate (Na0.5La0.5Bi4Ti4O15) through modification with cobalt
作者:Wang, Chun-Ming; Wang, Jin-Feng; Zheng, Li-Mei; Zhao, Ming-Lei; Wang, Chun-Lei
作者机构:[Wang, Chun-Ming; Wang, Jin-Feng; Zheng, Li-Mei; Zhao, Ming-Lei; Wang, Chun-Lei] Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Peo 更多
通讯作者:Wang, CM
通讯作者地址:[Wang, CM]Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Peoples R China.
来源:MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
出版年:2010
卷:171
期:1-3
页码:79-85
DOI:10.1016/j.mseb.2010.03.076
关键词:Piezoelectric materials; Ferroelectrics; Dielectric properties; Sodium; bismuth titanate
摘要:The dielectric, piezoelectric, and electromechanical properties of B-site cobalt-modified sodium lanthanum bismuth titanate (Na0.5La0.5Bi4Ti4O15, NLBT) piezoelectric ceramics were investigated. The piezoelectric properties of NLBT ceramics can be enhanced by cobalt modifications. The NLBT ceramics modified with 0.2 wt.% cobalt trioxide (NLBT-C4) possess good piezoelectric properties, with piezoelectric coefficient d(33) of 27 pC/N, electromechanical coupling factors (k(p) and k(t)) of 6.5% and 28.5%, and mechanical quality factor Q(m) (k(p) mode) of 3400. The Curie temperature T-c of cobalt-modified NLBT ceramics was found to slightly higher than that of pure NLBT ceramics. A large dielectric abnormity in dielectric loss tan delta was observed in NLBT ceramics, which can be significantly suppressed by cobalt modification. Thermal annealing studies presented the cobalt-modified NLBT ceramics possess stable piezoelectric properties. (C) 2010 Elsevier B.V. All rights reserved.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:12
Scopus被引频次:18
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953127365&doi=10.1016%2fj.mseb.2010.03.076&partnerID=40&md5=3acd8087ea19040f5592f23a8c0dbc32
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