Preparation, sintering and electrical properties of nano-grained multidoped ceria
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Bošković, Snežana B.Zec, Slavica
Branković, Goran O.
Brankovic, Z.
Devečerski, Aleksandar
Matović, Branko
Aldinger, Fritz
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Multiply doped ceria nanopowders were synthesized by applying MGNP (modified glycine/nitrate procedure). The overall concentration of dopants was kept constant (x = 0.2) whereby Gd ion as the main dopant was gradually substituted by Sm and by Sm + Y. The compositions of solid solutions were calculated by applying defect model introducing anion vacancy radius. Characterization of powders involved BET, TEM, XRD and chemical analyses. Densification was performed at 1500 degrees C, in an oxygen atmosphere for 1 h. The results showed that with increasing number of dopants, specific surface area of powders increased, followed by decrease of crystallite and grain sizes. Densification degree was also found to rise with increasing number of dopants. According to impedance measurements it was found that ionic conductivity was the highest 1.14 x 10(-3) S cm(-1) at 450 degrees C in sample doped with Gd, Sm and Y simultaneously. (C) 2009 Elsevier Ltd and Techna Group S.r.l. All fights reserved.
Keywords:
Nanometric powders / Multiple doping / Densification / Electrical conductivitySource:
Ceramics International, 2010, 36, 1, 121-127Funding / projects:
- Nanostrukturni čvrsti rastvori za primenu u elektronici i alternativnim izvorima energije (RS-MESTD-MPN2006-2010-142003)
DOI: 10.1016/j.ceramint.2009.07.015
ISSN: 0272-8842
WoS: 000273120100018
Scopus: 2-s2.0-70449533000
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VinčaTY - JOUR AU - Bošković, Snežana B. AU - Zec, Slavica AU - Branković, Goran O. AU - Brankovic, Z. AU - Devečerski, Aleksandar AU - Matović, Branko AU - Aldinger, Fritz PY - 2010 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3855 AB - Multiply doped ceria nanopowders were synthesized by applying MGNP (modified glycine/nitrate procedure). The overall concentration of dopants was kept constant (x = 0.2) whereby Gd ion as the main dopant was gradually substituted by Sm and by Sm + Y. The compositions of solid solutions were calculated by applying defect model introducing anion vacancy radius. Characterization of powders involved BET, TEM, XRD and chemical analyses. Densification was performed at 1500 degrees C, in an oxygen atmosphere for 1 h. The results showed that with increasing number of dopants, specific surface area of powders increased, followed by decrease of crystallite and grain sizes. Densification degree was also found to rise with increasing number of dopants. According to impedance measurements it was found that ionic conductivity was the highest 1.14 x 10(-3) S cm(-1) at 450 degrees C in sample doped with Gd, Sm and Y simultaneously. (C) 2009 Elsevier Ltd and Techna Group S.r.l. All fights reserved. T2 - Ceramics International T1 - Preparation, sintering and electrical properties of nano-grained multidoped ceria VL - 36 IS - 1 SP - 121 EP - 127 DO - 10.1016/j.ceramint.2009.07.015 ER -
@article{ author = "Bošković, Snežana B. and Zec, Slavica and Branković, Goran O. and Brankovic, Z. and Devečerski, Aleksandar and Matović, Branko and Aldinger, Fritz", year = "2010", abstract = "Multiply doped ceria nanopowders were synthesized by applying MGNP (modified glycine/nitrate procedure). The overall concentration of dopants was kept constant (x = 0.2) whereby Gd ion as the main dopant was gradually substituted by Sm and by Sm + Y. The compositions of solid solutions were calculated by applying defect model introducing anion vacancy radius. Characterization of powders involved BET, TEM, XRD and chemical analyses. Densification was performed at 1500 degrees C, in an oxygen atmosphere for 1 h. The results showed that with increasing number of dopants, specific surface area of powders increased, followed by decrease of crystallite and grain sizes. Densification degree was also found to rise with increasing number of dopants. According to impedance measurements it was found that ionic conductivity was the highest 1.14 x 10(-3) S cm(-1) at 450 degrees C in sample doped with Gd, Sm and Y simultaneously. (C) 2009 Elsevier Ltd and Techna Group S.r.l. All fights reserved.", journal = "Ceramics International", title = "Preparation, sintering and electrical properties of nano-grained multidoped ceria", volume = "36", number = "1", pages = "121-127", doi = "10.1016/j.ceramint.2009.07.015" }
Bošković, S. B., Zec, S., Branković, G. O., Brankovic, Z., Devečerski, A., Matović, B.,& Aldinger, F.. (2010). Preparation, sintering and electrical properties of nano-grained multidoped ceria. in Ceramics International, 36(1), 121-127. https://doi.org/10.1016/j.ceramint.2009.07.015
Bošković SB, Zec S, Branković GO, Brankovic Z, Devečerski A, Matović B, Aldinger F. Preparation, sintering and electrical properties of nano-grained multidoped ceria. in Ceramics International. 2010;36(1):121-127. doi:10.1016/j.ceramint.2009.07.015 .
Bošković, Snežana B., Zec, Slavica, Branković, Goran O., Brankovic, Z., Devečerski, Aleksandar, Matović, Branko, Aldinger, Fritz, "Preparation, sintering and electrical properties of nano-grained multidoped ceria" in Ceramics International, 36, no. 1 (2010):121-127, https://doi.org/10.1016/j.ceramint.2009.07.015 . .