Microwave assisted hydrothermal synthesis of (Fe,Co)(3)O-4 nanoparticles in the presence of surfactants and effects of Co/Fe ratio on microstructure and magnetism
Authors
Ognjanović, Miloš
Dojčinović, Biljana

Fabian, Martin

Stanković, Dalibor

Mariano, Jose F. M. L.
Antić, Bratislav

Article (Accepted Version)
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Microstructure and magnetic properties of nanoparticles can be tailored by optimising the synthesis procedure and changing chemical composition. In this study, a two-step procedure, i.e., coprecipitation in the presence of PEG 300 followed by microwave assisted (MW) hydrothermal synthesis, was introduced to obtain Co(x)Pe(3-x)O(4) (x = 0, 0.1 and 0.2) nanoparticles. It was found that with the increase of Co content, particle/crystallite size increased, with significant change of coercivity (H-c). The mixed samples of CoxFe3O4 (x = 0.1 and 0.2) were magnetically harder in comparison with Fe3O4. The H-c of Fe3O4 was 91 Oe, while for Co0.10Fe2.90O4 and Co(0.20)Ee(2.80) O-4, H, was 256 Oe and 1070 Oe, respectively. Saturation magnetisation (M s ) of mixed samples also increased up to 6% compared to Fe3O4. A special effort was devoted to study the effects of introducing different surfactants (PEG 300, PEG 4000 or SDS) during the synthesis procedure in order to improve morphological and micr...ostructural properties of CoFe3O4 nanoparticles. The influence of surfactants on physical/chemical properties of nanoparticles is discussed.
Keywords:
Magnetite / Microwave synthesis / Cobalt ferrite / Structural characterisation / Magnetic propertiesSource:
Ceramics International, 2018, 44, 12, 13967-13972Publisher:
- Elsevier Sci Ltd, Oxford
Funding / projects:
- Ministry of Education, Science and Technological Development of the Republic of Serbia through the Eureka Project [E!9982]
Note:
- This is peer-reviewed version of the following article: Ognjanović, M.; Dojčinović, B.; Fabián, M.; Stanković, D. M.; Mariano, J. F. M. L.; Antić, B. Microwave Assisted Hydrothermal Synthesis of (Fe,Co)3O4 Nanoparticles in the Presence of Surfactants and Effects of Co/Fe Ratio on Microstructure and Magnetism. Ceramics International 2018, 44 (12), 13967–13972. https://doi.org/10.1016/j.ceramint.2018.04.246
- The published version: http://cer.ihtm.bg.ac.rs/handle/123456789/2441
DOI: 10.1016/j.ceramint.2018.04.246
ISSN: 0272-8842
WoS: 000437077000070
Scopus: 2-s2.0-85046789554
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IHTMTY - JOUR AU - Ognjanović, Miloš AU - Dojčinović, Biljana AU - Fabian, Martin AU - Stanković, Dalibor AU - Mariano, Jose F. M. L. AU - Antić, Bratislav PY - 2018 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/3337 AB - Microstructure and magnetic properties of nanoparticles can be tailored by optimising the synthesis procedure and changing chemical composition. In this study, a two-step procedure, i.e., coprecipitation in the presence of PEG 300 followed by microwave assisted (MW) hydrothermal synthesis, was introduced to obtain Co(x)Pe(3-x)O(4) (x = 0, 0.1 and 0.2) nanoparticles. It was found that with the increase of Co content, particle/crystallite size increased, with significant change of coercivity (H-c). The mixed samples of CoxFe3O4 (x = 0.1 and 0.2) were magnetically harder in comparison with Fe3O4. The H-c of Fe3O4 was 91 Oe, while for Co0.10Fe2.90O4 and Co(0.20)Ee(2.80) O-4, H, was 256 Oe and 1070 Oe, respectively. Saturation magnetisation (M s ) of mixed samples also increased up to 6% compared to Fe3O4. A special effort was devoted to study the effects of introducing different surfactants (PEG 300, PEG 4000 or SDS) during the synthesis procedure in order to improve morphological and microstructural properties of CoFe3O4 nanoparticles. The influence of surfactants on physical/chemical properties of nanoparticles is discussed. PB - Elsevier Sci Ltd, Oxford T2 - Ceramics International T1 - Microwave assisted hydrothermal synthesis of (Fe,Co)(3)O-4 nanoparticles in the presence of surfactants and effects of Co/Fe ratio on microstructure and magnetism VL - 44 IS - 12 SP - 13967 EP - 13972 DO - 10.1016/j.ceramint.2018.04.246 ER -
@article{ author = "Ognjanović, Miloš and Dojčinović, Biljana and Fabian, Martin and Stanković, Dalibor and Mariano, Jose F. M. L. and Antić, Bratislav", year = "2018", abstract = "Microstructure and magnetic properties of nanoparticles can be tailored by optimising the synthesis procedure and changing chemical composition. In this study, a two-step procedure, i.e., coprecipitation in the presence of PEG 300 followed by microwave assisted (MW) hydrothermal synthesis, was introduced to obtain Co(x)Pe(3-x)O(4) (x = 0, 0.1 and 0.2) nanoparticles. It was found that with the increase of Co content, particle/crystallite size increased, with significant change of coercivity (H-c). The mixed samples of CoxFe3O4 (x = 0.1 and 0.2) were magnetically harder in comparison with Fe3O4. The H-c of Fe3O4 was 91 Oe, while for Co0.10Fe2.90O4 and Co(0.20)Ee(2.80) O-4, H, was 256 Oe and 1070 Oe, respectively. Saturation magnetisation (M s ) of mixed samples also increased up to 6% compared to Fe3O4. A special effort was devoted to study the effects of introducing different surfactants (PEG 300, PEG 4000 or SDS) during the synthesis procedure in order to improve morphological and microstructural properties of CoFe3O4 nanoparticles. The influence of surfactants on physical/chemical properties of nanoparticles is discussed.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Ceramics International", title = "Microwave assisted hydrothermal synthesis of (Fe,Co)(3)O-4 nanoparticles in the presence of surfactants and effects of Co/Fe ratio on microstructure and magnetism", volume = "44", number = "12", pages = "13967-13972", doi = "10.1016/j.ceramint.2018.04.246" }
Ognjanović, M., Dojčinović, B., Fabian, M., Stanković, D., Mariano, J. F. M. L.,& Antić, B.. (2018). Microwave assisted hydrothermal synthesis of (Fe,Co)(3)O-4 nanoparticles in the presence of surfactants and effects of Co/Fe ratio on microstructure and magnetism. in Ceramics International Elsevier Sci Ltd, Oxford., 44(12), 13967-13972. https://doi.org/10.1016/j.ceramint.2018.04.246
Ognjanović M, Dojčinović B, Fabian M, Stanković D, Mariano JFML, Antić B. Microwave assisted hydrothermal synthesis of (Fe,Co)(3)O-4 nanoparticles in the presence of surfactants and effects of Co/Fe ratio on microstructure and magnetism. in Ceramics International. 2018;44(12):13967-13972. doi:10.1016/j.ceramint.2018.04.246 .
Ognjanović, Miloš, Dojčinović, Biljana, Fabian, Martin, Stanković, Dalibor, Mariano, Jose F. M. L., Antić, Bratislav, "Microwave assisted hydrothermal synthesis of (Fe,Co)(3)O-4 nanoparticles in the presence of surfactants and effects of Co/Fe ratio on microstructure and magnetism" in Ceramics International, 44, no. 12 (2018):13967-13972, https://doi.org/10.1016/j.ceramint.2018.04.246 . .