caa a22 4500 445827823 CHVBK 20180317145304.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10854-010-0134-7 doi (NATIONALLICENCE)springer-10.1007/s10854-010-0134-7 Effect of excess Pb on microstructures and electrical properties of 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 ceramics [Elektronische Daten] [Y. Zhang, Z. Yang, W. Ye, C. Lu, L. Xia] 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 (PMNT) ceramics were fabricated by using their powders synthesized through a sol-gel process. Excess Pb(CH3COO)2·3H2O (0, 2, 5, 10 or 15mol%) was added to the starting materials to study the effect of excess Pb on the microstructures, ferroelectric and dielectric properties of the PMNT ceramics. All the X-ray diffraction peaks can be indexed using perovskite-type PMNT for the ceramics prepared with excess Pb, while the PMNT ceramics with no excess Pb contain a little pyrochlore phase. The PMNT ceramics prepared with 2mol% excess Pb are dense and uniform and composed of grains ranging from 3 to 7μm. They exhibit the largest remnant polarization (P r=32.1μC/cm2) and the highest peak dielectric constant (ε max=12,725). When more than 2mol% excess Pb added, the electrical properties of the PMNT ceramics decreased with increasing excess Pb. Too much excess Pb (over 10mol%) resulted in abnormal grain growth (>20μm), large pores and residual PbO in amorphous state in PMNT ceramics, and they impaired the ferroelectric and dielectric properties of PMNT ceramics greatly. Springer Science+Business Media, LLC, 2010 Zhang Y. Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, 308 Ningxia Road, 266071, Qingdao, People's Republic of China aut Yang Z. Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, 308 Ningxia Road, 266071, Qingdao, People's Republic of China aut Ye W. Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, 308 Ningxia Road, 266071, Qingdao, People's Republic of China aut Lu C. Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, 308 Ningxia Road, 266071, Qingdao, People's Republic of China aut Xia L. Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, 308 Ningxia Road, 266071, Qingdao, People's Republic of China aut Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/3(2011-03-01), 309-314 0957-4522 22:3<309 2011 22 10854 https://doi.org/10.1007/s10854-010-0134-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-010-0134-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Y. Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, 308 Ningxia Road, 266071, Qingdao, People's Republic of China aut NATIONALLICENCE 700 1- Yang Z. Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, 308 Ningxia Road, 266071, Qingdao, People's Republic of China aut NATIONALLICENCE 700 1- Ye W. Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, 308 Ningxia Road, 266071, Qingdao, People's Republic of China aut NATIONALLICENCE 700 1- Lu C. Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, 308 Ningxia Road, 266071, Qingdao, People's Republic of China aut NATIONALLICENCE 700 1- Xia L. Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, 308 Ningxia Road, 266071, Qingdao, People's Republic of China aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/3(2011-03-01), 309-314 0957-4522 22:3<309 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer