期刊
JAPANESE JOURNAL OF APPLIED PHYSICS
卷 47, 期 12, 页码 8880-8883出版社
IOP PUBLISHING LTD
DOI: 10.1143/JJAP.47.8880
关键词
lead-free piezoelectric ceramics; phase transition; (K,Na,Li)NbO3-BaTiO3
资金
- Office of Basic Energy Sciences, Department of Energy
In this manuscript, we report the polymorphic phase transitions, structural changes and piezoelectric properties of alkali niobate based lead-free ceramics. The phase transitions were characterized as a function of alkali niobate content at room temperature. The results clearly demonstrate that in this system high piezoelectric properties are achieved for a specific fraction of ferroelectric orthorhombic (O) and tetragonal (T) phases. Using Rietveld and powder diffraction analysis, a correlation was established among the piezoelectric response, the fraction of O and T phases, and KNN ratio for three different systems of (K,Na)NbO3-BaTiO3 (KNN-BT), KNN-LiNbO3 (LN), and (K,Na,Li)NbO3 (KNLN)-BT. [DOI: 10.1143/JJAP.47.8880]
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