Effects of Ta Content on the Electrical Properties of Lead-Free (K0.44Na0.52Li0.04)(Nb0.96-xTaxSb0.04)O3 Ceramics. Issue 1 (2nd January 2016)

• Record Type: Journal Article
• Authors: Zhang, Zhiqiang; Yang, Jie; Liu, Zhifu; Li, Yongxiang
• Is Part Of: Ferroelectrics. Volume 490:Issue 1(2016)
• Page Start: 70
• Page End: 77
• Publication Date: 2016-01-02
• Subjects: Lead-free -- PPT -- optimum poling temperature -- piezoelectric properties; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2015.1072025
• Languages: English
• ISSNs: 0015-0193

Abstract

Abstract : Lead-free piezoelectric ceramics with the composition of (K0.44 Na0.52 Li0.04 )(Nb0.96-x Tax Sb0.04 )O3 (KNLNTx S) were prepared by the conventional solid-state reaction method. The effects of Ta content on the phase structure, microstructure and electrical properties of KNLNTx S ceramics were investigated. The effect of poling temperature on piezoelectric properties of KNLNTx S ceramics was also studied in detail. Enhanced piezoelectric properties ( d 33 = 315 pC/N, k p = 0.49 and k t = 0.48) with low dielectric loss (tanδ < 0.06) were obtained in the ceramics with x = 0.10 under optimum poling temperature (140°C), indicating that KNLNTx S ceramic is a promising lead-free piezoelectric candidate material.