caa a22 4500 445828145 CHVBK 20180317145305.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s10854-010-0140-9 doi (NATIONALLICENCE)springer-10.1007/s10854-010-0140-9 Effects of Nd-substitution on microstructures and dielectric characteristics of CaCu3Ti4O12 ceramics [Elektronische Daten] [Ying Wang, Lei Ni, Xiang Chen] Ca1−3x/2NdxCu3Ti4O12 (x=0, 0.1, 0.2) ceramics were prepared by a solid state reaction process, and single-phased structures were obtained for all the compositions. The dielectric characteristics of pure and Nd-substituted CaCu3Ti4O12 ceramics were investigated together with the microstructures. The mixed-valent structures of Cu+/Cu2+ and Ti3+/Ti4+ in the present ceramics were confirmed by X-ray photoelectron analysis. The dielectric relaxation in the low temperature range was examined in detail and the variation of dielectric constant and dielectric loss was attributed to the modification mixed-valent structures. Springer Science+Business Media, LLC, 2010 Wang Ying Laboratory of Dielectric Materials, Department of Materials Science and Engineering, Zhejiang University, 310027, Hangzhou, China aut Ni Lei Laboratory of Dielectric Materials, Department of Materials Science and Engineering, Zhejiang University, 310027, Hangzhou, China aut Chen Xiang Laboratory of Dielectric Materials, Department of Materials Science and Engineering, Zhejiang University, 310027, Hangzhou, China aut Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/4(2011-04-01), 345-350 0957-4522 22:4<345 2011 22 10854 https://doi.org/10.1007/s10854-010-0140-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-010-0140-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Ying Laboratory of Dielectric Materials, Department of Materials Science and Engineering, Zhejiang University, 310027, Hangzhou, China aut NATIONALLICENCE 700 1- Ni Lei Laboratory of Dielectric Materials, Department of Materials Science and Engineering, Zhejiang University, 310027, Hangzhou, China aut NATIONALLICENCE 700 1- Chen Xiang Laboratory of Dielectric Materials, Department of Materials Science and Engineering, Zhejiang University, 310027, Hangzhou, China aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/4(2011-04-01), 345-350 0957-4522 22:4<345 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer