Microstructure, crystalline phase, and electrical properties of ZnO-added Li0.06(Na0.535K0.48)0.94NbO3 ceramics
2011; Elsevier BV; Volume: 11; Issue: 3 Linguagem: Inglês
10.1016/j.cap.2010.12.026
ISSN1878-1675
AutoresHaitao Li, Bo‐Ping Zhang, Min Cui, Wei-Gang Yang, Nan Ma, Jing‐Feng Li,
Tópico(s)Multiferroics and related materials
ResumoAbstract ZnO-doped Li0.06(Na0.535K0.48)0.94NbO3 ceramics were synthesized by a conventional mixed-oxide method. A dense microstructure was achieved and was free from deliquescence when ZnO was added. With adding 0.6 mol% ZnO, the Zn2+ first enters the A-site, while higher amounts of Zn2+ substitutes B-site ions. The addition of ZnO changes the ceramics to ‘‘hard’’ performance with improvement of Qm to 235. A phase transition from tetragonal to orthorhombic phase was obtained in the compositional range of 0.6–0.8 mol% ZnO. Because of such transitional behavior, d33, kp, and er reached peak values of 250 pC/N, 45%, and 986, respectively.
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