Synthesis and characterization of Al, Y, Co and Cr substituted ultrafine powder of NiFe2O4
Apstrakt
The ultrafine spinel NiFe1.9M0.1O4 powders (M=Al, Y, Cr, Fe) were synthesized by thermal decomposition of appropriate mixtures of complex compounds with acetylacetone - (2,4 pentadione) ligands ([M(AA)(x)]) at 500 degreesC. Samples were annealed in the temperature range 600-1000 degreesC and the crystallization process was followed by XRD. The largest crystallite size and the highest crystallization rate are observed for NiFe1.9Al0.1O4, while the opposite was found for NiFe1.9Y0.1O4. Strain value in NiFe1.9Y0.1O4 changes sign at temperatures between 700-800 degreesC, while for NiFe1.9M0.1O4 (M=Al, Cr) it has a positive sign and reaches the maximum value at 700 degreesC. The crystal structure of the Samples annealed at 1000 degreesC was refined using the Rietveld profile method. Cation substitution in Ni-ferrite changes its structural and microstructural parameters, and can also significantly influence other physical properties.
Ključne reči:
microstructure / Rietveld method / spinel / synthesis / ultrafine powderIzvor:
Materials Science Forum, 2004, 283-286Izdavač:
- Trans Tech Publications Ltd, Zurich-Uetikon
DOI: 10.4028/www.scientific.net/MSF.443-444.283
ISSN: 0255-5476
WoS: 000189421300059
Scopus: 2-s2.0-17544398502
Kolekcije
Institucija/grupa
Hemijski fakultet / Faculty of ChemistryTY - JOUR AU - Blanusa, J AU - Antić, Bratislav AU - Nikolić, Aleksandar S. AU - Rakic, S AU - Jovic, N AU - Sreckovic, M PY - 2004 UR - https://cherry.chem.bg.ac.rs/handle/123456789/573 AB - The ultrafine spinel NiFe1.9M0.1O4 powders (M=Al, Y, Cr, Fe) were synthesized by thermal decomposition of appropriate mixtures of complex compounds with acetylacetone - (2,4 pentadione) ligands ([M(AA)(x)]) at 500 degreesC. Samples were annealed in the temperature range 600-1000 degreesC and the crystallization process was followed by XRD. The largest crystallite size and the highest crystallization rate are observed for NiFe1.9Al0.1O4, while the opposite was found for NiFe1.9Y0.1O4. Strain value in NiFe1.9Y0.1O4 changes sign at temperatures between 700-800 degreesC, while for NiFe1.9M0.1O4 (M=Al, Cr) it has a positive sign and reaches the maximum value at 700 degreesC. The crystal structure of the Samples annealed at 1000 degreesC was refined using the Rietveld profile method. Cation substitution in Ni-ferrite changes its structural and microstructural parameters, and can also significantly influence other physical properties. PB - Trans Tech Publications Ltd, Zurich-Uetikon T2 - Materials Science Forum T1 - Synthesis and characterization of Al, Y, Co and Cr substituted ultrafine powder of NiFe2O4 SP - 283 EP - 286 DO - 10.4028/www.scientific.net/MSF.443-444.283 ER -
@article{ author = "Blanusa, J and Antić, Bratislav and Nikolić, Aleksandar S. and Rakic, S and Jovic, N and Sreckovic, M", year = "2004", abstract = "The ultrafine spinel NiFe1.9M0.1O4 powders (M=Al, Y, Cr, Fe) were synthesized by thermal decomposition of appropriate mixtures of complex compounds with acetylacetone - (2,4 pentadione) ligands ([M(AA)(x)]) at 500 degreesC. Samples were annealed in the temperature range 600-1000 degreesC and the crystallization process was followed by XRD. The largest crystallite size and the highest crystallization rate are observed for NiFe1.9Al0.1O4, while the opposite was found for NiFe1.9Y0.1O4. Strain value in NiFe1.9Y0.1O4 changes sign at temperatures between 700-800 degreesC, while for NiFe1.9M0.1O4 (M=Al, Cr) it has a positive sign and reaches the maximum value at 700 degreesC. The crystal structure of the Samples annealed at 1000 degreesC was refined using the Rietveld profile method. Cation substitution in Ni-ferrite changes its structural and microstructural parameters, and can also significantly influence other physical properties.", publisher = "Trans Tech Publications Ltd, Zurich-Uetikon", journal = "Materials Science Forum", title = "Synthesis and characterization of Al, Y, Co and Cr substituted ultrafine powder of NiFe2O4", pages = "283-286", doi = "10.4028/www.scientific.net/MSF.443-444.283" }
Blanusa, J., Antić, B., Nikolić, A. S., Rakic, S., Jovic, N.,& Sreckovic, M.. (2004). Synthesis and characterization of Al, Y, Co and Cr substituted ultrafine powder of NiFe2O4. in Materials Science Forum Trans Tech Publications Ltd, Zurich-Uetikon., 283-286. https://doi.org/10.4028/www.scientific.net/MSF.443-444.283
Blanusa J, Antić B, Nikolić AS, Rakic S, Jovic N, Sreckovic M. Synthesis and characterization of Al, Y, Co and Cr substituted ultrafine powder of NiFe2O4. in Materials Science Forum. 2004;:283-286. doi:10.4028/www.scientific.net/MSF.443-444.283 .
Blanusa, J, Antić, Bratislav, Nikolić, Aleksandar S., Rakic, S, Jovic, N, Sreckovic, M, "Synthesis and characterization of Al, Y, Co and Cr substituted ultrafine powder of NiFe2O4" in Materials Science Forum (2004):283-286, https://doi.org/10.4028/www.scientific.net/MSF.443-444.283 . .