Conference
The magnetic properties of CoFe2O4 and CoFe2O4/SiO2 prepared by thermal decomposition method
| العنوان: | The magnetic properties of CoFe2O4 and CoFe2O4/SiO2 prepared by thermal decomposition method |
|---|---|
| المؤلفون: | Anđelković, Ljubica, Šuljagić, Marija, Mraković, Ana, Pavlović, Vladimir, Tadić, Marin |
| المصدر: | P.S.I.C. 3 |
| سنة النشر: | 2024 |
| المجموعة: | CeR - Central Repository ICTM (Institute of Chemistry, Technology and Metallurgy, University of Belgrade) / CER - Centralni Repozitorijum IHTM-a (Institut za hemiju, tehnologiju i metalurgiju, Univerzitet u Beogradu) |
| الوصف: | The present study has dealt with the structural, morphological and magnetic properties of cobalt-ferrite (CoFe2O4) and cobalt-ferrite in amorphous silica matrix (CoFe2O4/SiO2) prepared by thermal decomposition of appropriate acetylacetonate complexes. The synthesized materials were characterized with the use of X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), electron dispersive spectrum (EDS) and transmission electron microscopy (TEM). The presence of a single-phase cubic spinel structure was confirmed for both investigated powders. The synthesized particles are highly agglomerated as a consequence of their nanometric sizes and ferrimagnetic nature. The microstructure of the composite indicated spongy porous clusters with less pronounced agglomeration than that of bare cobalt-ferrite. Closer inspection of the EDS map revealed that the CoFe2O4 nanoparticles were homogeneously dispersed over the silica matrix. The pure CoFe2O4 sample consisted of spherically shaped agglomerates with the primary particles being evidently in the sub-100 nm range and mostly polygonal in shape. Magnetic measurements were conducted using a SQUID magnetometer. The introduction of a silica matrix led to a slight decrease in coercivity at room temperature. The saturation magnetization value for CoFe2O4 was about 75 emu/g at ambient conditions. As expected, the silica matrix strongly influenced the magnetization of the material (⁓7.7 emu/g). The obtained results show the perspective for possible applications in various technological areas. ; Presented at Twenty-Fifth Jubilee Annual Conference On Material Science YUCOMAT 2024 & Thirteenth World Round Table Conference On Sintering XIII WRTCS 2024, Program and Book of Abstracts, September 1-7, 2024, Herceg Novi, Montenegro ; Abstract: [https://cer.ihtm.bg.ac.rs/handle/123456789/7833] |
| نوع الوثيقة: | conference object |
| اللغة: | English |
| Relation: | https://cer.ihtm.bg.ac.rs/handle/123456789/7833; https://cer.ihtm.bg.ac.rs/handle/123456789/7835; https://hdl.handle.net/21.15107/rcub_cer_7835; http://cer.ihtm.bg.ac.rs/bitstream/id/30937/LjA.pdf |
| الاتاحة: | https://cer.ihtm.bg.ac.rs/handle/123456789/7835 https://hdl.handle.net/21.15107/rcub_cer_7835 http://cer.ihtm.bg.ac.rs/bitstream/id/30937/LjA.pdf |
| Rights: | openAccess ; https://creativecommons.org/licenses/by/4.0/ ; BY ; Authors |
| رقم الانضمام: | edsbas.478E9E5B |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |