Improved dielectric and piezoelectric properties of Sm-doped Pb(Mg1/3Nb2/3)O3–Pb(Zn1/3Nb2/3)-PbTiO3 ternary ferroelectric ceramics. Issue 10 (15th May 2022)

• Record Type: Journal Article
• Authors: Jia, Hongrui; Mi, Jiahao; Li, Zhen; Wang, Linghang
• Is Part Of: Ceramics international. Volume 48:Issue 10(2022)
• Page Start: 14761
• Page End: 14766
• Publication Date: 2022-05-15
• Subjects: PMN-PZN-PT -- Sm doping -- Dielectric -- Ferroelectric -- Piezoelectric; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.02.013
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Sm-doped Pb(Mg1/3 Nb2/3 )-PbTiO3 (PMN-PT) binary ferroelectric ceramics has received extensive attention due to the excellent dielectric and piezoelectric properties. However, its Curie temperature ( T c ) is greatly reduced by Sm doping and T c is only 89 °C at the optimum piezoelectric coefficient. In this work, Sm-doped Pb(Mg1/3 Nb2/3 )O3 –Pb(Zn1/3 Nb2/3 )-PbTiO3 (Sm: PMN-PZN-PT) ternary ferroelectric ceramics near MPB were successfully manufactured and the crystal structure, microstructure and electric properties were investigated with respect to Sm doping content. A high piezoelectric coefficient of 870 pC/N and a high T c of 146 °C were achieved simultaneously in PMN-PZN-PT ternary ceramics with 1% Sm doping content. In addition, the room temperature dielectric constant was greatly improved by Sm doping and the P r, P s and E c values gradually decrease with the increase of Sm content. These results indicate that Sm-doped PMN-PZN-PT ceramics may be an attractive material for high performance piezoelectric device applications.