Micromagnetic modelling of stripe domains in thin films with a columnar microstructure

Autor: V. O. Vas’kovskiy, E. Yu. Dengina, A. S. Bolyachkin, N. A. Kulesh
Rok vydání: 2021
Předmět:
3D TRANSITION METALS
Work (thermodynamics)
Materials science
COBALT ALLOYS
RARE EARTHS
COLUMNAR MICROSTRUCTURES
General Physics and Astronomy
02 engineering and technology
01 natural sciences
Condensed Matter::Materials Science
Matrix (mathematics)
Transition metal
PERPENDICULAR MAGNETIC ANISOTROPY
Condensed Matter::Superconductivity
THIN FILMS
0103 physical sciences
MAGNETIC THICK FILMS
Periodic boundary conditions
PERIODIC BOUNDARY CONDITIONS
Thin film
ASPECT RATIO
MICROMAGNETIC MODELING
REMANENT MAGNETIZATION
010302 applied physics
Condensed matter physics
BINARY ALLOYS
MICROMAGNETIC MODELLING
TRANSITION METALS
021001 nanoscience & nanotechnology
Microstructure
lcsh:QC1-999
Magnetic anisotropy
LANTHANUM ALLOYS
STRUCTURAL FEATURE
Remanence
MAGNETIC ANISOTROPY
MICROSTRUCTURE
0210 nano-technology
lcsh:Physics
Zdroj: AIP Advances, Vol 11, Iss 1, Pp 015319-015319-5 (2021)
AIP Adv.
AIP Advances
ISSN: 2158-3226
Popis: A micromagnetic model of thin films with columnar microstructure in the form of a matrix with reduced magnetic properties and embedded columns with high aspect ratio is presented. Such microstructure is typical for some films based on rare-earth and 3d transition metal alloys, in particular for La-Co films, that were chosen as an object for our modelling. Described structural features promote an effective perpendicular magnetic anisotropy that for thick enough films leads to formation of the stripe domain pattern. Our work addresses to the problem of finding equilibrium characteristics of stripe domains for the case of infinite columnar films. Herein it is shown how width of stripe domains, remanent magnetization and energies depend on number of replicas of periodic boundary conditions and the size of modelling volume. Equilibrium values of listed quantities can be found by extrapolating obtained dependencies. © 2021 Author(s). This work was supported by Russian Science Foundation, project No. 19-72-00141.
Databáze: OpenAIRE
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