Preparation, sintering and electrical properties of nano-grained multidoped ceria
Authorized Users Only
2010
Authors
Bošković, Snežana BZec, Slavica P
Branković, Goran
Branković, Zorica
Devečerski, Aleksandar B
Matović, Branko
Aldinger, F
Article (Published version)
Metadata
Show full item recordAbstract
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.
Keywords:
Nanometric powders / Multiple doping / Electrical conductivity / DensificationSource:
Ceramics International, 2010, 36, 1, 121-127Publisher:
- Elsevier Sci Ltd, Oxford
Funding / projects:
- Nanostrukturni čvrsti rastvori za primenu u elektronici i alternativnim izvorima energije (RS-MESTD-MPN2006-2010-142003)
- Humboldt FoundationAlexander von Humboldt Foundation
DOI: 10.1016/j.ceramint.2009.07.015
ISSN: 0272-8842
WoS: 000273120100018
Scopus: 2-s2.0-70449533000
Collections
Institution/Community
Institut za multidisciplinarna istraživanjaTY - JOUR AU - Bošković, Snežana B AU - Zec, Slavica P AU - Branković, Goran AU - Branković, Zorica AU - Devečerski, Aleksandar B AU - Matović, Branko AU - Aldinger, F PY - 2010 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/411 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. PB - Elsevier Sci Ltd, Oxford T2 - Ceramics International T1 - Preparation, sintering and electrical properties of nano-grained multidoped ceria EP - 127 IS - 1 SP - 121 VL - 36 DO - 10.1016/j.ceramint.2009.07.015 ER -
@article{ author = "Bošković, Snežana B and Zec, Slavica P and Branković, Goran and Branković, Zorica and Devečerski, Aleksandar B and Matović, Branko and Aldinger, F", 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.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Ceramics International", title = "Preparation, sintering and electrical properties of nano-grained multidoped ceria", pages = "127-121", number = "1", volume = "36", doi = "10.1016/j.ceramint.2009.07.015" }
Bošković, S. B., Zec, S. P., Branković, G., Branković, Z., Devečerski, A. B., Matović, B.,& Aldinger, F.. (2010). Preparation, sintering and electrical properties of nano-grained multidoped ceria. in Ceramics International Elsevier Sci Ltd, Oxford., 36(1), 121-127. https://doi.org/10.1016/j.ceramint.2009.07.015
Bošković SB, Zec SP, Branković G, Branković Z, Devečerski AB, 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 P, Branković, Goran, Branković, Zorica, Devečerski, Aleksandar B, Matović, Branko, Aldinger, F, "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 . .