Correlation between Phase Transitions and Piezoelectric Properties in Lead-Free (K,Na,Li)NbO3-BaTiO3 Ceramics

被引：63

作者：

Ahn, Cheol-Woo ^{[1
]}

Park, Chee-Sung ^{[1
]}

Viehland, Dwight ^{[1
]}

Nahm, Sahn ^{[2
]}

Kang, Dong-Heon ^{[3
]}

Bae, Kyoo-Sik ^{[3
]}

Priya, Shashank ^{[1
]}

机构：

[1] Virginia Tech, Ctr Energy Harvesting Mat & Syst, Blacksburg, VA 24061 USA

[2] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea

[3] Suwon Univ, Dept Elect Mat Engn, Hwaseong 445743, Gyeonggi Do, South Korea

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2008年 / 47卷 / 12期

关键词：

lead-free piezoelectric ceramics; phase transition; (K; Na; Li)NbO3-BaTiO3;

D O I：

10.1143/JJAP.47.8880

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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]

引用

页码：8880 / 8883

页数：4

共 16 条

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