| Autor: |
Satoru Kobayashi, Tatiana Kiseleva, Deleg Sangaa, Narmandakh Jargalan, Enkhnaran Uyanga |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
AIP Advances, Vol 13, Iss 2, Pp 025155-025155-4 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2158-3226 |
| DOI: |
10.1063/9.0000594 |
| Popis: |
We report results of magnetic hysteresis scaling of minor loops for hollow Fe3O4 submicron particles with variable diameter of 400–720 nm. As in the case of bulk ferromagnetic materials, a power-law scaling with an exponent of ∼1.5 was found to universally hold true between hysteresis loss and remanence of minor loops, although the magnetization process is significantly different from a bulk ferromagnet where irreversible Bloch wall displacement plays a crucial role. The minor-loop coefficient decreases with inner/outer diameter ratio and is almost independent of temperature above T = 30 K. The behavior of the coefficient indicates that a mobility of a magnetic vortex under magnetic fields increases with increasing a inner/outer diameter ratio of a hollow sphere and is weakly temperature dependent. The results suggest that the coefficient can be a sensitive indicator of the particle geometry for vortex spherical particles. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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