caa a22 4500 463221931 CHVBK 20180405153215.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10853-006-1291-1 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1291-1 Fabrication and characterization of fine-grained barium strontium titanate ceramics by the heterogeneous precipitation method [Elektronische Daten] [Chaoliang Mao, Xianlin Dong, Tao Zeng, Genshui Wang] The heterogeneous precipitation method has been successfully used to prepare SrCO3 nanoparticle-coated BTO (BaCO3 or TiO2) powders by using PAA (polyacrylic acid) and NH4HCO3 as the dispersant and precipitator, respectively. Compared to the mixture obtained by the direct ball milling of the BaCO3, SrCO3 and TiO2 powders during the conventional solid-state process, this coated structure is effective for the low temperature synthesis of barium strontium titanate (BST) powders. Sintering study of the powder synthesized by this method showed the dense and fine-grained BST ceramics could be obtained at a low sintering temperature. The grain size effect on the sensitivity of the dielectric constant vs. frequencies was discussed for the first time. Compared to the coarse-grained material, the fine-grained sample exhibits the better sensitivity of dielectric constant vs. frequency at ferroelectric state. It was shown that as the grain size decreased, the transition became diffuse, transition temperature (T c) decreased and the dielectric constant increased. Springer Science+Business Media, LLC, 2007 Mao Chaoliang Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, P.R. China aut Dong Xianlin Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, P.R. China aut Zeng Tao Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, P.R. China aut Wang Genshui Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, P.R. China aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/16(2007-08-01), 6917-6922 0022-2461 42:16<6917 2007 42 10853 https://doi.org/10.1007/s10853-006-1291-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1291-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mao Chaoliang Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, P.R. China aut NATIONALLICENCE 700 1- Dong Xianlin Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, P.R. China aut NATIONALLICENCE 700 1- Zeng Tao Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, P.R. China aut NATIONALLICENCE 700 1- Wang Genshui Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, P.R. China aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/16(2007-08-01), 6917-6922 0022-2461 42:16<6917 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer