caa a22 4500 445828668 CHVBK 20180317145307.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s10854-010-0159-y doi (NATIONALLICENCE)springer-10.1007/s10854-010-0159-y Preparation and piezoelectric properties of CuO-doped (Na0.5K0.5)NbO3 ceramics by the citrate precursor method [Elektronische Daten] [Hongqiang Wang, Ruzhong Zuo, Li Wang, Jian Fang, Xiaohui Wang, Longtu Li] A low-cost citrate so-gel route was investigated to synthesize nano-sized crystalline powders (<100nm) of 1mol% CuO modified (Na0.5K0.5)NbO3 compositions. It was found that amorphous gels can be transformed into crystallite powders with single-phase perovskite structure when calcined at 500-600°C for 3h. The transmission electron microscopy observation showed that the particles are column-like and well dispersed, depending on the calcination condition. The as-pressed samples exhibit improved densification behavior and finer grain morphology after sintering. Electrical properties of the samples sintered at 1,060°C are as follows: dielectric constant ε r=605, piezoelectric constant d 33~117 pC/N, planar electromechanical coupling factor k p~0.38 and mechanical quality factor Q m~725. Springer Science+Business Media, LLC, 2010 Wang Hongqiang Institute of Electro Ceramics & Devices, School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People's Republic of China aut Zuo Ruzhong Institute of Electro Ceramics & Devices, School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People's Republic of China aut Wang Li Institute of Electro Ceramics & Devices, School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People's Republic of China aut Fang Jian State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China aut Wang Xiaohui State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China aut Li Longtu State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China aut Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/5(2011-05-01), 458-462 0957-4522 22:5<458 2011 22 10854 https://doi.org/10.1007/s10854-010-0159-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-010-0159-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Hongqiang Institute of Electro Ceramics & Devices, School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People's Republic of China aut NATIONALLICENCE 700 1- Zuo Ruzhong Institute of Electro Ceramics & Devices, School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People's Republic of China aut NATIONALLICENCE 700 1- Wang Li Institute of Electro Ceramics & Devices, School of Materials Science and Engineering, Hefei University of Technology, 230009, Hefei, People's Republic of China aut NATIONALLICENCE 700 1- Fang Jian State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 700 1- Wang Xiaohui State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 700 1- Li Longtu State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/5(2011-05-01), 458-462 0957-4522 22:5<458 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer