Characterization of superparamagnetic MgxZn1-x Fe2O4 powders
| creativework.keywords | Ferrite, Magnetic particles, Superparamagnetism | |
| creativework.publisher | Versita | en |
| dc.contributor.author | Kassabova-Zhetcheva V.D. | |
| dc.contributor.author | Pavlova L.P. | |
| dc.contributor.author | Samuneva B.I. | |
| dc.contributor.author | Cherkezova-Zheleva Z.P. | |
| dc.contributor.author | Mitov I.G. | |
| dc.contributor.author | Mikhov M.T. | |
| dc.date.accessioned | 2024-07-10T14:27:03Z | |
| dc.date.accessioned | 2024-07-10T14:47:01Z | |
| dc.date.available | 2024-07-10T14:27:03Z | |
| dc.date.available | 2024-07-10T14:47:01Z | |
| dc.date.issued | 2007-03-01 | |
| dc.description.abstract | Structural and magnetic properties of MgxZn1-x Fe2O4 powders have been studied with respect to the application for thermal cancer therapy (magnetic hyperthermia). MgxZn1-xFe2O4 (x = 0.1-0.5) powders with particle sizes between 5 and 8 nm were produced by citrate method. The X-ray diffraction patterns of the samples correspond to a spinel phase. The lattice constant and the volume of the elementary cell increase when x changes from 0.1 to 0.5. The FTIR-spectra ascertain the spinel phase formation. The Mossbauer studies reveal the presence of extremely small particles, which undergo superparamagnetic relaxation at room temperature. The core-shell model has been applied to explain quadruple doublets. The quadruple splitting at ``shells`` is bigger than those at ``cores`` whereas the isomer shifts remain close. Magnetic studies confirm the presence of extremely small particles that behave as superparamagnetic ones. © Versita Warsaw and Springer-Verlag Berlin Heidelberg 2006. | |
| dc.identifier.doi | 10.2478/s11532-006-0069-2 | |
| dc.identifier.issn | 1644-3624 | |
| dc.identifier.issn | 1895-1066 | |
| dc.identifier.scopus | SCOPUS_ID:33846650666 | en |
| dc.identifier.uri | https://rlib.uctm.edu/handle/123456789/123 | |
| dc.language.iso | en | |
| dc.source.uri | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33846650666&origin=inward | |
| dc.title | Characterization of superparamagnetic MgxZn1-x Fe2O4 powders | |
| dc.type | Article | |
| oaire.citation.issue | 1 | |
| oaire.citation.volume | 5 |