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SUMMARY:Stripe pattern in magnetic thin films: observations\, modeling and
  simulations - Anne Bernard-Mantel (CNRS (Centre national de la recherche 
 scientifique))
DTSTART:20250821T100000Z
DTEND:20250821T104500Z
UID:TALK234754@talks.cam.ac.uk
DESCRIPTION:Magnetic domain observation and prediction have been the subje
 ct of continuous scientific interest for over a hundred years. The charact
 eristics of magnetization patterns are notoriously difficult to elucidate\
 , since they intricately depend on the balance of multiple interactions pr
 esent in magnetic systems. A particular challenge comes from the fact that
  magnetic systems fall into the category of systems with competing short-r
 ange and long-range interactions. We will introduce the subject of magneti
 c stripe patterns by showing various observations in thin magnetic films o
 f thicknesses varying from a single atomic layer to millimeter thick layer
 s\, and presenting the state of the art in magnetic stripe modeling. In th
 e second part we will introduce in details our recent results\, where a re
 duced 2D micromagnetic model was used to obtain asymptotically exact formu
 las for the stripe equilibrium width in ultrathin films and multilayers. F
 inally\, we will show how micromagnetic simulations can be used to numeric
 ally validate the regime of applicability of different models and obtain t
 he equilibrium stripe width in the regime where no analytical model applie
 s. As a perspective to our work\, we will discuss the transition from the 
 2D to the 3D case.
LOCATION:Seminar Room 1\, Newton Institute
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