transparent gif

 

Ej inloggad.

Göteborgs universitets publikationer

Variable variance Preisach model for multilayers with perpendicular magnetic anisotropy

Författare och institution:
A. F. Franco (-); C. Gonzalez-Fuentes (-); R. Morales (-); C. A. Ross (-); Randy K. Dumas (Institutionen för fysik (GU)); Johan Åkerman (Institutionen för fysik (GU)); C. Garcia (-)
Publicerad i:
Physical Review B, 94 ( 6 )
ISSN:
2469-9950
Publikationstyp:
Artikel, refereegranskad vetenskaplig
Publiceringsår:
2016
Språk:
engelska
Fulltextlänk:
Sammanfattning (abstract):
We present a variable variance Preisach model that fully accounts for the different magnetization processes of a multilayer structure with perpendicular magnetic anisotropy by adjusting the evolution of the interaction variance as the magnetization changes. We successfully compare in a quantitative manner the results obtained with this model to experimental hysteresis loops of several [CoFeB/Pd](n) multilayers. The effect of the number of repetitions and the thicknesses of the CoFeB and Pd layers on the magnetization reversal of the multilayer structure is studied, and it is found that many of the observed phenomena can be attributed to an increase of the magnetostatic interactions and subsequent decrease of the size of the magnetic domains. Increasing the CoFeB thickness leads to the disappearance of the perpendicular anisotropy, and such a minimum thickness of the Pd layer is necessary to achieve an out-of-plane magnetization.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
NATURVETENSKAP ->
Fysik
Nyckelord:
1st-order reversal curves, magnetostatic interactions, particulate, media, recording media, thin-films, hysteresis, diagrams, torque, polarizer, dynamics, Physics
Postens nummer:
241978
Posten skapad:
2016-09-19 15:34

Visa i Endnote-format

Göteborgs universitet • Tel. 031-786 0000
© Göteborgs universitet 2007