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Determination of anisotropy constants via fitting of magnetic hysteresis to numerical calculation of Stoner–Wohlfarth model
- Source :
- AIP Advances, Vol 11, Iss 8, Pp 085111-085111-4 (2021)
- Publication Year :
- 2021
- Publisher :
- AIP Publishing LLC, 2021.
-
Abstract
- Anisotropy constants of magnetic materials are typically determined through angle-resolved Ferromagnetic Resonance (ar-FMR) and torque magnetometry, which can be time consuming measurements, thus limiting their utility. The Stoner–Wohlfarth model can be used to numerically fit measured magnetic hysteresis curves to more easily determine these anisotropy constants. To demonstrate this, 10 nm bct FexCoyMnz single-crystal films grown by molecular beam epitaxy on MgO(001) substrates were investigated. The hysteresis behavior measured by vibrating sample magnetometry was least-squares fit against numerically calculated hysteresis curves generated from the Stoner–Wohlfarth model to extract the anisotropy constants. The cubic anisotropy of different compositions of FeCoMn films was at ∼104 J/m3, which is on the same order of magnitude of bct Fe and Co thin films measured by ar-FMR and torque magnetometry techniques.
- Subjects :
- 010302 applied physics
Materials science
Condensed matter physics
Magnetometer
Physics
QC1-999
General Physics and Astronomy
02 engineering and technology
021001 nanoscience & nanotechnology
Magnetic hysteresis
01 natural sciences
Ferromagnetic resonance
law.invention
Hysteresis
Condensed Matter::Materials Science
law
Stoner–Wohlfarth model
Condensed Matter::Superconductivity
0103 physical sciences
Thin film
0210 nano-technology
Anisotropy
Order of magnitude
Subjects
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 11
- Issue :
- 8
- Database :
- OpenAIRE
- Journal :
- AIP Advances
- Accession number :
- edsair.doi.dedup.....03daf2829bc0bc14558cc904033b90f3