caa a22 4500 445828587 CHVBK 20180317145306.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s10854-010-0261-1 doi (NATIONALLICENCE)springer-10.1007/s10854-010-0261-1 Phase transition and electrical properties of LiNbO3-modified K0.49Na0.51NbO3 lead-free piezoceramics [Elektronische Daten] [Zong-Yang Shen, Yue-Ming Li, Liang Jiang, Run-Run Li, Zhu-Mei Wang, Yan Hong, Run-Hua Liao] Lead-free (1-x)K0.49Na0.51NbO3-xLiNbO3 (KNN-LN, x=0~0.08) piezoelectric ceramics were prepared by the conventional solid-state sintering method. The effects of LiNbO3 doping amount x on the phase transition behavior and the electrical properties of KNN-LN ceramics were investigated. By increasing LiNbO3 doping amount x, the orthorhombic-tetragonal polymorphic phase transition (PPT) temperature (T o-t) of KNN-LN ceramics shifted downwards, however, the Curie temperature (T c) slightly moved upwards. The room temperature phase structure thus changed from orthorhombic to tetragonal across the compositions with 0.05≤x≤0.06, named as PPT region. The composition with x=0.06 in the tetragonal side of PPT region exhibited optimized electrical properties of d 33=246pC/N, k p=41.6%, ε r=679, tgδ=0.028, and Q m=52. In addition to its very high T c=467°C, this ceramic can be an excellent candidate for replacing the lead-based piezoceramics in high temperature applications. Springer Science+Business Media, LLC, 2010 Shen Zong-Yang School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333403, Jingdezhen, China aut Li Yue-Ming School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333403, Jingdezhen, China aut Jiang Liang School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333403, Jingdezhen, China aut Li Run-Run School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333403, Jingdezhen, China aut Wang Zhu-Mei School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333403, Jingdezhen, China aut Hong Yan School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333403, Jingdezhen, China aut Liao Run-Hua School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333403, Jingdezhen, China aut Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/8(2011-08-01), 1071-1075 0957-4522 22:8<1071 2011 22 10854 https://doi.org/10.1007/s10854-010-0261-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-010-0261-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shen Zong-Yang School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333403, Jingdezhen, China aut NATIONALLICENCE 700 1- Li Yue-Ming School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333403, Jingdezhen, China aut NATIONALLICENCE 700 1- Jiang Liang School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333403, Jingdezhen, China aut NATIONALLICENCE 700 1- Li Run-Run School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333403, Jingdezhen, China aut NATIONALLICENCE 700 1- Wang Zhu-Mei School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333403, Jingdezhen, China aut NATIONALLICENCE 700 1- Hong Yan School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333403, Jingdezhen, China aut NATIONALLICENCE 700 1- Liao Run-Hua School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333403, Jingdezhen, China aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/8(2011-08-01), 1071-1075 0957-4522 22:8<1071 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer