| Title: |
Amorphous iron-chromium oxide nanoparticles with long-term stability |
| Authors: |
Iacob, M.I.; Cazacu, M.; Turtă, C.I.; Turta, C.; Turté, K.I.; Turta, K.I.; Туртэ, К.И.; Doroftei, F.; Botko, M.; Cizmar, E.; Zelenakova, A.; Feher, A. |
| Source: |
Materials Research Bulletin 163-168 |
| Publication Year: |
2015 |
| Subject Terms: |
Amorphous; Iron-chromium oxide; magnetic properties; morphology; nanoparticles |
| Description: |
Iron-chromium nanoparticles NPs were obtained through the thermal decomposition of mu;3-oxo heterotrinuclear {FeCr2O} acetate in the presence of sunflower oil and dodecylamine DA as surfactants. The average diameter of the NPs was 3.5 nm, as estimated on the basis of transmission electron microscopy and atomic force microscopy images. Both techniques revealed the formation of roughly approximated spheres with some irregularities and agglomerations in larger spherical assemblies of 50-100 nm. In hexane, NPs with diameters in the 2.33-4.85 nm range are individually dispersed, as emphasized by dynamic light scattering measurements. The amorphous nature of the product was emphasized by X-ray powder diffraction. The study of the magnetic properties shows the presence of superparamagnetic state of iron-chromium oxide NPs and the diamagnetic contribution from DA layer forming a shell of NPs. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| ISSN: |
00255408 |
| Relation: |
https://ibn.idsi.md/vizualizare_articol/179103; urn:issn:00255408 |
| DOI: |
10.1016/j.materresbull.2015.01.055 |
| Availability: |
https://ibn.idsi.md/vizualizare_articol/179103; https://doi.org/10.1016/j.materresbull.2015.01.055 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.73A278CD |
| Database: |
BASE |