caa a22 4500 44582641X CHVBK 20180317145300.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10854-010-0090-2 doi (NATIONALLICENCE)springer-10.1007/s10854-010-0090-2 Effect of excess Pb on formation of perovskite-type 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 powders synthesized through a sol-gel process [Elektronische Daten] [Y. Zhang, W. Ye, Z. Yang, C. Lu, L. Xia] Perovskite-type 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 (PMNT) powders were fabricated by using a sol-gel process. Excess Pb(CH3COO)2·3H2O (0, 2, 5, 10 or 15mol%) was added to starting materials to compensate PbO loss from volatilization during heat treatment. X-ray diffraction (XRD) was employed to investigate the effect of excess Pb on the perovksite phase formation of the PMNT powders. It was found that the optimal level of the excess Pb content is 5mol%. When the raw materials contained 5mol% excess Pb, the PMNT powders of purest perovskite form was obtained at the calcination temperature of 850°C. In the PMNT powders, most part of the intermediate phase was Pb-rich pyrochlore Pb2Nb2O7 which was transformed into perovskite phase after calcination at 650°C, while the residual pyrochlore phase was Pb-deficient Pb3Nb4O13 which required calcination at a higher temperature (650-850°C) to transform into perovskite phase. Compared with the conventional solid-state reaction methods and the solution-based methods reported previously, the present sol-gel route is better at synthesizing PMNT powders of perovskite phase at a low temperature. 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 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 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 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 22/1(2011-01-01), 91-95 0957-4522 22:1<91 2011 22 10854 https://doi.org/10.1007/s10854-010-0090-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-010-0090-2 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- 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- 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- 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 22/1(2011-01-01), 91-95 0957-4522 22:1<91 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer