Textured Pb(Mg1/3Nb2/3)O3 −Pb(In1/2Nb1/2)O3 −PbTiO3 ceramics with enhanced piezoelectric properties and high Curie temperature prepared by low-temperature sintering

• Published in: Sensors and actuators. A. Physical. Vol. 366; p. 114929
• Main Authors: Zate, Temesgen Tadeyos, Ko, Nu-Ri, Yu, Hye-Lim, Sun, Jeong-Woo, Jo, Wook, Jeon, Jae-Ho
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.02.2024
• Subjects: CuO sintering additive; Low-temperature sintering; PMN–PIN–PT; Refined matrix powder; Texturing; CuO sintering additive; PMN–PIN–PT; Texturing; Low-temperature sintering; Refined matrix powder
• ISSN: 0924-4247; 1873-3069
• DOI: 10.1016/j.sna.2023.114929

A low-temperature sintering is crucial for the fabrication of multilayer piezoceramic actuators through low-cost internal metal electrodes. Herein, Pb(Mg1/3Nb2/3)O3−Pb(In1/2Nb1/2)O3 −PbTiO3 (PMN−PIN−PT) textured ceramics were prepared by a combined use of refined matrix powder and CuO sintering additive. When the matrix powder was refined by planetary ball-milling for 10 h, the sintering temperature of the textured 0.37PMN−0.29PIN−0.34PT ceramics was lowered to 1175 ºC, and a subsequent addition of 1 mol% CuO further lowered it to 950 ºC. The textured 0.37PMN−0.29PIN−0.34PT ceramics with 3 vol% BaTiO3 (BT) template sintered at 950 ºC for 10 h yielded excellent piezoelectric properties, such as a Lotgering factor (LF) of 97%, a unipolar strain of 0.23% at 2 kV/mm, and a Curie temperature (TC) of 231 ºC. These enhanced piezoelectric properties and high TC result from the high texture, transient liquid phase sintering, Cu2+ ion doping, and minimum BT template content. [Display omitted] ●Low-temperature sintering was achieved for textured PMN-PIN-PT ceramics.●Refined matrix, CuO sintering additive, and minimal BT template were used.●Enhanced piezoelectric properties including a high TC were obtained.