caa a22 4500 388019654 CHVBK 20180307124920.0 cr unu---uuuuu 161130e199812 xx s 000 0 eng 10.1557/JMR.1998.0456 doi S0884291400046707 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0456 Synthesis and Na+ conduction properties of the ceramics of Na5YSi4O12-type phosphate-substituted solid solutions [Elektronische Daten] The Na+-superionic conducting ceramics with Na5YSi4O12-type structure were synthesized using the composition formula of Na3+3x−yY1-xPySi3-yO9, in which some portions of Na+ ions are considered to replace Y3+as Na(13+8x−4y/3) [Na(4x−1)/3Y(4-4x)/3] [P4y/3Si(12-4y)/3]O12 according to Na5YSi4O12-type composition formula. The average ionic radius of the 6-coordinated Y3+ sites [= (4x − 1)/ 3 ×rNa + (4 - 4x)/3 × rY] approximately covered the range of rGd and to rSm. The ionic conduction properties were strongly dependent upon the combination of composition parameters, x and y. In this report, the dependence of conduction properties on the composition is discussed on the basis of structural considerations. Copyright © Materials Research Society 1998 Yamashita Kimihiro Division of Inorganic Materials, Institute for Medical and Dental Engineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101, Japan Matsuda Motohide Department of Environmental Chemistry and Materials, Faculty of Environmental Science and Technology, Okayama University, 2-1-1 Tsushima-Naka, Okayama 700, Japan Umegaki Takao Department of Industrial Chemistry, Faculty of Engineering, Tokyo Metropolitan University,1-1 Minami-Osawa, Hachioji, Tokyo 192-03, Japan Journal of Materials Research Cambridge University Press 13/12(1998-12), 3361-3364 0884-2914 13:12<3361 1998 13 JMR https://doi.org/10.1557/JMR.1998.0456 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0456 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yamashita Kimihiro Division of Inorganic Materials, Institute for Medical and Dental Engineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101, Japan NATIONALLICENCE 700 1- Matsuda Motohide Department of Environmental Chemistry and Materials, Faculty of Environmental Science and Technology, Okayama University, 2-1-1 Tsushima-Naka, Okayama 700, Japan NATIONALLICENCE 700 1- Umegaki Takao Department of Industrial Chemistry, Faculty of Engineering, Tokyo Metropolitan University,1-1 Minami-Osawa, Hachioji, Tokyo 192-03, Japan NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/12(1998-12), 3361-3364 0884-2914 13:12<3361 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge