Ce1-xY(Nd)(x)O2-delta nanopowders: potential materials for intermediate temperature solid oxide fuel cells
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Аутори
Dohcevic-Mitrovic, Z. D.Grujić-Brojčin, Mirjana
Šćepanović, Maja
Popović, Zoran V.
Bošković, Snežana B.
Matović, Branko
Zinkevich, M.
Aldinger, Fritz
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Nanopowdered solid solution Ce1-xY(Nd)(x)O2-delta samples ( 0.1 LT = x LT = 0.25) were made by self-propagating room temperature (SPRT) synthesis. The first-order Raman spectra of Ce1-xY(Nd)(x)O2-delta samples measured at room temperature exhibit three broad features: the main Raman active F-2g mode at about 450 cm(-1) and two broad features at about 550 (545) and 600 cm-1. The mode at similar to 600 cm(-1) was assigned to the intrinsic oxygen vacancies due to the nonstoichiometry of ceria nanopowders. The mode at about 550 (545) cm(-1) was attributed to the oxygen vacancies introduced into the ceria lattice whenever Ce4+ ions are replaced with trivalent cations (Y3+, Nd3+). The intensity of this mode increases with doping in both series of samples, indicating a change of O2- vacancy concentration. The mode frequency shifts in opposite direction in Y- and Nd-doped samples with doping level, suggesting that different types of defect space can occur in Y- and Nd-doped ceria nanopowders.
Извор:
Journal of Physics: Condensed Matter, 2006, 18, 33, S2061-S2068Напомена:
- International School and Workshop on Nanoscience and Nanotechnology, Nov 14-16, 2005, Monte Porzio Catone, Italy
DOI: 10.1088/0953-8984/18/33/S22
ISSN: 0953-8984
WoS: 000239558800024
Scopus: 2-s2.0-33746931257
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VinčaTY - JOUR AU - Dohcevic-Mitrovic, Z. D. AU - Grujić-Brojčin, Mirjana AU - Šćepanović, Maja AU - Popović, Zoran V. AU - Bošković, Snežana B. AU - Matović, Branko AU - Zinkevich, M. AU - Aldinger, Fritz PY - 2006 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6619 AB - Nanopowdered solid solution Ce1-xY(Nd)(x)O2-delta samples ( 0.1 LT = x LT = 0.25) were made by self-propagating room temperature (SPRT) synthesis. The first-order Raman spectra of Ce1-xY(Nd)(x)O2-delta samples measured at room temperature exhibit three broad features: the main Raman active F-2g mode at about 450 cm(-1) and two broad features at about 550 (545) and 600 cm-1. The mode at similar to 600 cm(-1) was assigned to the intrinsic oxygen vacancies due to the nonstoichiometry of ceria nanopowders. The mode at about 550 (545) cm(-1) was attributed to the oxygen vacancies introduced into the ceria lattice whenever Ce4+ ions are replaced with trivalent cations (Y3+, Nd3+). The intensity of this mode increases with doping in both series of samples, indicating a change of O2- vacancy concentration. The mode frequency shifts in opposite direction in Y- and Nd-doped samples with doping level, suggesting that different types of defect space can occur in Y- and Nd-doped ceria nanopowders. T2 - Journal of Physics: Condensed Matter T1 - Ce1-xY(Nd)(x)O2-delta nanopowders: potential materials for intermediate temperature solid oxide fuel cells VL - 18 IS - 33 SP - S2061 EP - S2068 DO - 10.1088/0953-8984/18/33/S22 ER -
@article{ author = "Dohcevic-Mitrovic, Z. D. and Grujić-Brojčin, Mirjana and Šćepanović, Maja and Popović, Zoran V. and Bošković, Snežana B. and Matović, Branko and Zinkevich, M. and Aldinger, Fritz", year = "2006", abstract = "Nanopowdered solid solution Ce1-xY(Nd)(x)O2-delta samples ( 0.1 LT = x LT = 0.25) were made by self-propagating room temperature (SPRT) synthesis. The first-order Raman spectra of Ce1-xY(Nd)(x)O2-delta samples measured at room temperature exhibit three broad features: the main Raman active F-2g mode at about 450 cm(-1) and two broad features at about 550 (545) and 600 cm-1. The mode at similar to 600 cm(-1) was assigned to the intrinsic oxygen vacancies due to the nonstoichiometry of ceria nanopowders. The mode at about 550 (545) cm(-1) was attributed to the oxygen vacancies introduced into the ceria lattice whenever Ce4+ ions are replaced with trivalent cations (Y3+, Nd3+). The intensity of this mode increases with doping in both series of samples, indicating a change of O2- vacancy concentration. The mode frequency shifts in opposite direction in Y- and Nd-doped samples with doping level, suggesting that different types of defect space can occur in Y- and Nd-doped ceria nanopowders.", journal = "Journal of Physics: Condensed Matter", title = "Ce1-xY(Nd)(x)O2-delta nanopowders: potential materials for intermediate temperature solid oxide fuel cells", volume = "18", number = "33", pages = "S2061-S2068", doi = "10.1088/0953-8984/18/33/S22" }
Dohcevic-Mitrovic, Z. D., Grujić-Brojčin, M., Šćepanović, M., Popović, Z. V., Bošković, S. B., Matović, B., Zinkevich, M.,& Aldinger, F.. (2006). Ce1-xY(Nd)(x)O2-delta nanopowders: potential materials for intermediate temperature solid oxide fuel cells. in Journal of Physics: Condensed Matter, 18(33), S2061-S2068. https://doi.org/10.1088/0953-8984/18/33/S22
Dohcevic-Mitrovic ZD, Grujić-Brojčin M, Šćepanović M, Popović ZV, Bošković SB, Matović B, Zinkevich M, Aldinger F. Ce1-xY(Nd)(x)O2-delta nanopowders: potential materials for intermediate temperature solid oxide fuel cells. in Journal of Physics: Condensed Matter. 2006;18(33):S2061-S2068. doi:10.1088/0953-8984/18/33/S22 .
Dohcevic-Mitrovic, Z. D., Grujić-Brojčin, Mirjana, Šćepanović, Maja, Popović, Zoran V., Bošković, Snežana B., Matović, Branko, Zinkevich, M., Aldinger, Fritz, "Ce1-xY(Nd)(x)O2-delta nanopowders: potential materials for intermediate temperature solid oxide fuel cells" in Journal of Physics: Condensed Matter, 18, no. 33 (2006):S2061-S2068, https://doi.org/10.1088/0953-8984/18/33/S22 . .