Correlation between Phase Transitions and Piezoelectric Properties in Lead-Free (K,Na,Li)NbO3-BaTiO3 Ceramics
- Authors
- Ahn, Cheol-Woo; Park, Chee-Sung; Viehland, Dwight; Nahm, Sahn; Kang, Dong-Heon; Bae, Kyoo-Sik; Priya, Shashank
- Issue Date
- 12월-2008
- Publisher
- IOP PUBLISHING LTD
- Keywords
- lead-free piezoelectric ceramics; phase transition; (K,Na,Li)NbO3-BaTiO3
- Citation
- JAPANESE JOURNAL OF APPLIED PHYSICS, v.47, no.12, pp.8880 - 8883
- Indexed
- SCIE
SCOPUS
- Journal Title
- JAPANESE JOURNAL OF APPLIED PHYSICS
- Volume
- 47
- Number
- 12
- Start Page
- 8880
- End Page
- 8883
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/122275
- DOI
- 10.1143/JJAP.47.8880
- ISSN
- 0021-4922
- Abstract
- 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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