Mechanism of magnetization reversal in bulk and nanoparticles of magnetite
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F25%3A00619175" target="_blank" >RIV/68081723:_____/25:00619175 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/prb/abstract/10.1103/PhysRevB.111.134439" target="_blank" >https://journals.aps.org/prb/abstract/10.1103/PhysRevB.111.134439</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.111.134439" target="_blank" >10.1103/PhysRevB.111.134439</a>
Alternative languages
Result language
angličtina
Original language name
Mechanism of magnetization reversal in bulk and nanoparticles of magnetite
Original language description
The process by which magnetic moments switch directions is crucial for understanding the performance of magnetic storage materials and in biomedical applications such as magnetic particle imaging and magnetic hyperthermia. Here, we utilize the geodesic nudged elastic band method to identify the atomic-level minimum energy path for a field-free reorientation of magnetic moments in bulk magnetite and single-domain cuboidal magnetite nanoparticles terminated by {100} surfaces. We show that this magnetization reversal involves three successive elementary rotations of magnetic moments in distinct {110} planes. For iron-rich terminated nanoparticles, this energy barrier depends on the degree of surface spin anisotropy. However, no such effect was observed for oxygen-rich terminations. The former effect is particularly pronounced in nanoparticles with large surface-to-volume ratio and diminishes as particle size increases.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/EH22_008%2F0004596" target="_blank" >EH22_008/0004596: Sensors and Detectors for Future Information Society</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
2469-9950
e-ISSN
2469-9969
Volume of the periodical
111
Issue of the periodical within the volume
13
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
134439
UT code for WoS article
001479147500001
EID of the result in the Scopus database
2-s2.0-105003879066