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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003719naa a2200517 4500
001oai:DiVA.org:su-103293
003SwePub
008140512s2014 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1032932 URI
0247 a https://doi.org/10.1016/j.ssi.2014.01.0392 DOI
040 a (SwePub)su
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Mazo, G. N.4 aut
2451 0a Influence of structural arrangement of R2O2 slabs of layered cuprates on high-temperature properties important for application in IT-SOFC
264 1b Elsevier BV,c 2014
338 a electronic2 rdacarrier
500 a AuthorCount:13;
520 a Layered cuprates Pr2 - xSrxCuO4-delta with T* (x = 0.3, 0.4) and T (x = 1.0, 13) structures were prepared in air at 1273-1373 K. Oxygen content (4 - delta) of the as-prepared phases decreases from 3.96 (x = 03) and 3.98 (x = 0.4) to 3.69 (x = 1.0) and 3.49 (x = 1.3), respectively, as determined by chemical titration. Dilatometry measurements revealed non-linear expansion with low- and high-temperature regions occurring due to thermogravimetrically detected oxygen loss. Different expansion behaviors in low- and high-temperature regions of T- and T*-phases are attributed to various distributions of oxygen vacancies in their crystal structures. Both x = 0.4 and 1.0 ceramic samples exhibit lower conductivity values at high temperatures in comparison with undoped Pr2CuO4. The temperature dependences of the electrical conductivity at variable oxygen partial pressure (Po-2 = 10(-4)-0.21 atm) reveal different mechanisms of the holes generation in x = 0.4 and 1.0 compounds. The tracer diffusion coefficient of oxygen (D-T) in Pr1.6Sr0.4CuO3.98 determined by isotopic exchange depth profile (IEDP) technique using secondary ion mass spectrometry (SIMS) is in the range 6.7 x 10(-10)-5.7 x 10(-8) cm(2)/s at 973-1223 K. Obtained values are in between those for La2CuO4 and Pr2CuO4 with pure rock-salt and fluorite slabs in the crystal structure, respectively. This shows the importance of rock-salt slabs for high oxygen conductivity in R2MO4 oxides.
650 7a NATURVETENSKAPx Kemi0 (SwePub)1042 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciences0 (SwePub)1042 hsv//eng
653 a Layered cuprates
653 a Thermal expansion
653 a Oxygen diffusion
653 a Cathode materials
653 a High-temperature conductivity
7001 a Kazakov, S. M.4 aut
7001 a Kolchina, L. M.4 aut
7001 a Istomin, S. Ya.4 aut
7001 a Antipov, E. V.4 aut
7001 a Lyskov, N. V.4 aut
7001 a Galin, M. Z.4 aut
7001 a Leonova, L. S.4 aut
7001 a Fedotov, Yu. S.4 aut
7001 a Bredikhin, S. I.4 aut
7001 a Liu, Yiu Stockholms universitet,Institutionen för material- och miljökemi (MMK)4 aut
7001 a Svensson, Gunnaru Stockholms universitet,Institutionen för material- och miljökemi (MMK)4 aut0 (Swepub:su)gunnar
7001 a Shen, Zhijianu Stockholms universitet,Institutionen för material- och miljökemi (MMK)4 aut0 (Swepub:su)shen
7102 a Stockholms universitetb Institutionen för material- och miljökemi (MMK)4 org
7730 t Solid State Ionicsd : Elsevier BVg 257, s. 67-74q 257<67-74x 0167-2738x 1872-7689
8564 u https://su.diva-portal.org/smash/get/diva2:717975/FULLTEXT01.pdfx primaryx Raw objecty fulltext:postprint
8564 u http://su.diva-portal.org/smash/get/diva2:717975/FULLTEXT01
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-103293
8564 8u https://doi.org/10.1016/j.ssi.2014.01.039

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