caa a22 4500 467926328 CHVBK 20180406152930.0 cr unu---uuuuu 170328e20061201xx s 000 0 eng 10.1134/S0020168506120156 doi (NATIONALLICENCE)springer-10.1134/S0020168506120156 Effect of nonstoichiometry on the structure and microwave dielectric properties of cobalt metaniobate [Elektronische Daten] [A. Belous, O. Ovchar, A. Kramarenko, D. Mishchuk, Bostjan Jancar, Jana Bezjak, Danilo Suvorov] The formation of cobalt metaniobate, CoNb2O6, with the columbite structure has been studied, and possible ways of optimizing solid-state synthesis conditions have been examined. Single-phase CoNb2−y O6−2.5y has been obtained in the composition range 0 ≤ y ≤ 0.05. The microstructure and microwave dielectric properties of Co1−x Nb2O6−x materials have been investigated. The results indicate that the electrical Q of the nonstoichiometric materials drops sharply for x > 0 because of the presence of Nb2O5 as an impurity phase. For x < 0, Q gradually decreases with increasing Co content, which is caused by the rise in lattice strain and presence of Co4Nb2O9 impurity. Pleiades Publishing, Inc., 2006 Belous A. Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, pr. Akademika Palladina 32/34, 03680, Kiev, Ukraine aut Ovchar O. Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, pr. Akademika Palladina 32/34, 03680, Kiev, Ukraine aut Kramarenko A. Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, pr. Akademika Palladina 32/34, 03680, Kiev, Ukraine aut Mishchuk D. Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, pr. Akademika Palladina 32/34, 03680, Kiev, Ukraine aut Jancar Bostjan Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia aut Bezjak Jana Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia aut Suvorov Danilo Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia aut Inorganic Materials Nauka/Interperiodica 42/12(2006-12-01), 1369-1373 0020-1685 42:12<1369 2006 42 10789 https://doi.org/10.1134/S0020168506120156 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0020168506120156 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Belous A. Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, pr. Akademika Palladina 32/34, 03680, Kiev, Ukraine aut NATIONALLICENCE 700 1- Ovchar O. Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, pr. Akademika Palladina 32/34, 03680, Kiev, Ukraine aut NATIONALLICENCE 700 1- Kramarenko A. Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, pr. Akademika Palladina 32/34, 03680, Kiev, Ukraine aut NATIONALLICENCE 700 1- Mishchuk D. Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, pr. Akademika Palladina 32/34, 03680, Kiev, Ukraine aut NATIONALLICENCE 700 1- Jancar Bostjan Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia aut NATIONALLICENCE 700 1- Bezjak Jana Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia aut NATIONALLICENCE 700 1- Suvorov Danilo Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia aut NATIONALLICENCE 773 0- Inorganic Materials Nauka/Interperiodica 42/12(2006-12-01), 1369-1373 0020-1685 42:12<1369 2006 42 10789 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 453857868 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer