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Please use this identifier to cite or link to this item: https://elib.bsu.by/handle/123456789/7268
Title: Oxygen ionic and electronic conductivity of La-doped BIMEVOX
Other Titles: Кислород-ионная и электронная проводимость систем BIMEVOX, легированных лантанами.
Authors: Самохвал, Виктор Васильевич
Хартон, Владислав Вадимович
Issue Date: 1998
Publisher: Elsevier
Citation: Solid State Ionics 111 (1998) 227-236
Abstract: Doping by either lanthanum or nickel has been found to result in decreasing ionic conductivity and thermal expansion of the B i^ L a ^ .^ .C u ^ .N i.O , ,_ s (x = 0.10-0.20; у = 0-0.10; z = 0-0.20) ceramics. The infrared absorption spectroscopic data on Bi2_,La,Vl^v_.CuvN i.0 5 ,_ 8 have been shown to correlate with the conductivity and crystal structure of the oxides. The thermal expansion coefficients of the ceramics are (13.5-15.5) X 10~ft К at temperatures of 300-570 К and (14.8-18.6) X Ю-6 К 1 at 580-1050 K. Ion transference numbers of Bi2_ tLa>V0 y(,Cu„ 10O5 _,_R (x = 0.10-0.20) have been determined by Faradaic efficiency measurements at 720-800 К to vary in the range from 0.65 to 0.95. Doping by lanthanum results in increasing electronic conductivity. A new experimental arrangement to study Faradaic efficiency of oxygen ionic conductors has been suggested and verified.
URI: http://elib.bsu.by/handle/123456789/7268
Appears in Collections:Статьи химического факультета

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