The Magnetic Structure of NiFe2O4 Nanoparticles
| Autor: | A. S. Kamzin, Meltem Asiltürk, Zerin Yesil, N. Dogan, Ayhan Bingölbali |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Physics and Astronomy (miscellaneous) Magnetic structure Magnetic moment media_common.quotation_subject Spinel Nanoparticle Frustration 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Ion Crystallography 0103 physical sciences Mössbauer spectroscopy engineering Crystallite 0210 nano-technology media_common |
| Zdroj: | Technical Physics Letters. 45:1008-1011 |
| ISSN: | 1090-6533 1063-7850 |
| DOI: | 10.1134/s1063785019100092 |
| Popis: | The Mossbauer studies of the magnetic structure of nickel ferrite (NiFe2O4) nanoparticles (NPs) are presented. It is shown that the redistribution of ions over nonequivalent crystallographic positions occurs upon a decrease in the size of NiFe2O4 crystallites to nanovalues, thus leading to the structural transformation of NiFe2O4 nanoparticles from inverse spinel to mixed spinel. It has been established that the magnetic moments of Fe ions in the volume of NiFe2O4 nanoparticles are ferromagnetically (collinearly) ordered, being noncollinear (or oblique) in the near-surface layer probably due to the frustration of moments in the near-surface layer of nanoparticles. |
| Databáze: | OpenAIRE |
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