caa a22 4500 467927464 CHVBK 20180406152933.0 cr unu---uuuuu 170328e20060501xx s 000 0 eng 10.1134/S0020168506050141 doi (NATIONALLICENCE)springer-10.1134/S0020168506050141 Effect of heterovalent substitution on the electrical conductivity of (Yb1− x Mx)2Ti2O7 (M [Elektronische Daten] Ca, Ba; x = 0, 0.05, 0.1) [A. Shlyakhtina, I. Kolbanev, O. Karyagina, L. Shcherbakova] (Yb1−x Cax)2Ti2O7 and (Yb1−x Bax)2Ti2O7 (x = 0, 0.05, 0.1) have been synthesized using hydroxide coprecipitation and mechanical activation of oxide mixtures, and their electrical conductivity has been measured from 350 to 1000°C. The pyrochlore titanate (Yb0.9Ca0.1)2Ti2O7 synthesized at 1400°C from a mechanically activated oxide mixture has the highest conductivity, ∼0.1 S/cm at 1000°C, among the oxygen-ion-conducting pyrochlores studied so far. The (Yb0.95Ca0.05)2Ti2O7 and (Yb0.9Ca0.1)2Ti2O7 samples prepared by reacting coprecipitated powder mixtures at 1400°C have a lower conductivity, as do the (Yb1−x Bax)2Ti2O7 (x=0.05, 0.1) samples prepared using mechanical activation. Pleiades Publishing, Inc., 2006 Shlyakhtina A. Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina 4, 119991, Moscow, Russia aut Kolbanev I. Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina 4, 119991, Moscow, Russia aut Karyagina O. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, ul. Kosygina 4, 119991, Moscow, Russia aut Shcherbakova L. Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina 4, 119991, Moscow, Russia aut Inorganic Materials Nauka/Interperiodica 42/5(2006-05-01), 528-531 0020-1685 42:5<528 2006 42 10789 https://doi.org/10.1134/S0020168506050141 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0020168506050141 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shlyakhtina A. Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina 4, 119991, Moscow, Russia aut NATIONALLICENCE 700 1- Kolbanev I. Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina 4, 119991, Moscow, Russia aut NATIONALLICENCE 700 1- Karyagina O. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, ul. Kosygina 4, 119991, Moscow, Russia aut NATIONALLICENCE 700 1- Shcherbakova L. Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina 4, 119991, Moscow, Russia aut NATIONALLICENCE 773 0- Inorganic Materials Nauka/Interperiodica 42/5(2006-05-01), 528-531 0020-1685 42:5<528 2006 42 10789 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer