The effect of magneto-crystalline anisotropy on the properties of hard and soft magnetic ferrite nanoparticles
Recent advances in the field of magnetic materials emphasize that the development of new and useful magnetic nanoparticles (NPs) requires an accurate and fundamental understanding of their collective magnetic behavior. Studies show that the magnetic properties are strongly affected by the magnetic a...
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| Format: | Article |
| Language: | English |
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Beilstein-Institut
2019-07-01
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| Series: | Beilstein Journal of Nanotechnology |
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| Online Access: | https://doi.org/10.3762/bjnano.10.133 |
| _version_ | 1819079550545428480 |
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| author | Hajar Jalili Bagher Aslibeiki Ali Ghotbi Varzaneh Volodymyr A. Chernenko |
| author_facet | Hajar Jalili Bagher Aslibeiki Ali Ghotbi Varzaneh Volodymyr A. Chernenko |
| author_sort | Hajar Jalili |
| collection | DOAJ |
| description | Recent advances in the field of magnetic materials emphasize that the development of new and useful magnetic nanoparticles (NPs) requires an accurate and fundamental understanding of their collective magnetic behavior. Studies show that the magnetic properties are strongly affected by the magnetic anisotropy of NPs and by interparticle interactions that are the result of the collective magnetic behavior of NPs. Here we study these effects in more detail. For this purpose, we prepared CoxFe3−xO4 NPs, with x = 0–1 in steps of 0.2, from soft magnetic (Fe3O4) to hard magnetic (CoFe2O4) ferrite, with a significant variation of the magnetic anisotropy. The phase purity and the formation of crystalline NPs with a spinel structure were confirmed through Rietveld refinement. The effect of Co doping on structure, morphology and magnetic properties of CoxFe3−xO4 samples was investigated. In particular, we examined the interparticle interactions in the samples by δm graphs and Henkel plots that have not been reported before in literature. Finally, we studied the hyperthermia properties and observed that the heat efficiency of soft Fe3O4 is about 4 times larger than that of hard CoFe2O4 ferrite, which was attributed to the high coercive field of samples compared with the external field amplitude. |
| first_indexed | 2024-12-21T19:30:46Z |
| format | Article |
| id | doaj.art-4608be4a623946e2821e4a8629245a7a |
| institution | Directory Open Access Journal |
| issn | 2190-4286 |
| language | English |
| last_indexed | 2024-12-21T19:30:46Z |
| publishDate | 2019-07-01 |
| publisher | Beilstein-Institut |
| record_format | Article |
| series | Beilstein Journal of Nanotechnology |
| spelling | doaj.art-4608be4a623946e2821e4a8629245a7a2022-12-21T18:52:43ZengBeilstein-InstitutBeilstein Journal of Nanotechnology2190-42862019-07-011011348135910.3762/bjnano.10.1332190-4286-10-133The effect of magneto-crystalline anisotropy on the properties of hard and soft magnetic ferrite nanoparticlesHajar Jalili0Bagher Aslibeiki1Ali Ghotbi Varzaneh2Volodymyr A. Chernenko3Department of Physics, University of Tabriz, Tabriz 51666-16471, IranDepartment of Physics, University of Tabriz, Tabriz 51666-16471, IranDepartment of Physics, Isfahan University of Technology, Isfahan, 84156-83111, IranBCMaterials and University of Basque Country (UPV/EHU), Sarriena s/n, Leioa 48940, SpainRecent advances in the field of magnetic materials emphasize that the development of new and useful magnetic nanoparticles (NPs) requires an accurate and fundamental understanding of their collective magnetic behavior. Studies show that the magnetic properties are strongly affected by the magnetic anisotropy of NPs and by interparticle interactions that are the result of the collective magnetic behavior of NPs. Here we study these effects in more detail. For this purpose, we prepared CoxFe3−xO4 NPs, with x = 0–1 in steps of 0.2, from soft magnetic (Fe3O4) to hard magnetic (CoFe2O4) ferrite, with a significant variation of the magnetic anisotropy. The phase purity and the formation of crystalline NPs with a spinel structure were confirmed through Rietveld refinement. The effect of Co doping on structure, morphology and magnetic properties of CoxFe3−xO4 samples was investigated. In particular, we examined the interparticle interactions in the samples by δm graphs and Henkel plots that have not been reported before in literature. Finally, we studied the hyperthermia properties and observed that the heat efficiency of soft Fe3O4 is about 4 times larger than that of hard CoFe2O4 ferrite, which was attributed to the high coercive field of samples compared with the external field amplitude.https://doi.org/10.3762/bjnano.10.133anisotropycobaltferriteHenkel plotshyperthermia therapynanoparticlesRietveld refinement |
| spellingShingle | Hajar Jalili Bagher Aslibeiki Ali Ghotbi Varzaneh Volodymyr A. Chernenko The effect of magneto-crystalline anisotropy on the properties of hard and soft magnetic ferrite nanoparticles Beilstein Journal of Nanotechnology anisotropy cobalt ferrite Henkel plots hyperthermia therapy nanoparticles Rietveld refinement |
| title | The effect of magneto-crystalline anisotropy on the properties of hard and soft magnetic ferrite nanoparticles |
| title_full | The effect of magneto-crystalline anisotropy on the properties of hard and soft magnetic ferrite nanoparticles |
| title_fullStr | The effect of magneto-crystalline anisotropy on the properties of hard and soft magnetic ferrite nanoparticles |
| title_full_unstemmed | The effect of magneto-crystalline anisotropy on the properties of hard and soft magnetic ferrite nanoparticles |
| title_short | The effect of magneto-crystalline anisotropy on the properties of hard and soft magnetic ferrite nanoparticles |
| title_sort | effect of magneto crystalline anisotropy on the properties of hard and soft magnetic ferrite nanoparticles |
| topic | anisotropy cobalt ferrite Henkel plots hyperthermia therapy nanoparticles Rietveld refinement |
| url | https://doi.org/10.3762/bjnano.10.133 |
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