Enhanced temperature stability in Tb-doped (Ba0.99Ca0.01)(Ti0.98Zr0.02)O3 lead free ceramics. Issue 2 (March 2015)

• Record Type: Journal Article
• Authors: Gao, Jinghan; Li, Qiang; Liu, Hairui; Shim, Jaeshik; Yan, Qingfeng; Zhang, Yiling; Chu, Xiangcheng
• Is Part Of: Ceramics international. Volume 41:Issue 2(2015)Part A
• Page Start: 2497
• Page End: 2501
• Publication Date: 2015-03
• Subjects: C. Electrical properties -- BCZT -- Piezoelectric ceramics -- Tb-doped -- Temperature stability; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2014.10.071
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Lead-free (Ba0.99 Ca0.01 )(Ti0.98 Zr0.02 )O3 (BCZT)+ x mol% Tb ( x =0–0.6) ceramics were prepared using a solid-state reaction technique. Phase structure, dielectric constant, ferroelectricity and temperature-dependent piezoelectric coefficient were explored. With an increasing Tb content, the orthorhombic–tetragonal phase transition temperature ( T O–T ) shifted to lower temperature while its Curie temperature ( T c ) remained at 130 °C. The temperature stability of piezoelectric coefficient ( d 33 ) could be enhanced from 30 to 120 °C in Tb-doped BCZT ceramics. A piezoelectric coefficient of d 33 =542 pm/V was obtained at x =0.2 with low temperature-dependent degradation from 30 to 120 °C. The results indicated that Tb-doped BCZT ceramics could be a promising candidate for commercial purposes.