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UID:event-151556@localz.events
DTSTAMP:20261112T122211Z
LAST-MODIFIED:20261104T053659Z
DTSTART:20261116T180000Z
DTEND:20261116T190000Z
SUMMARY:JILA Science Seminar
DESCRIPTION:Title: Coherent X-ray Interactions with Artificial Spin Ices Sp
 eaker: J. Todd Hastings\, Professor of Electrical Engineering and Associat
 e Dean for Research and Graduate Studies at the University of Kentucky Eve
 nt: Artificial spin ices (ASI) are arrays of nanomagnets that serve as mod
 el systems for collective magnetic behavior as well as platforms for uncon
 ventional computing and control of X-ray beams. Here we show how coherent 
 X-ray scattering can probe the magnetic order and dynamics of ASIs and how
  ASIs can serve as optical metamaterials in the soft X-ray region. An exam
 ple is the Ni0.8Fe0.2 square ASI whose geometry can be tuned to place a ma
 gnetic phase transition near room temperature. This system orders into an 
 antiferromagnetic ground state and exhibits spontaneous nucleation and ann
 ihilation of super-domain walls. We show that this dynamic process can be 
 imaged using Bragg coherent diffraction imaging (BCDI) with coherent\, res
 onant soft X-ray illumination[1]. The square ASI…\n\nhttps://localz.even
 ts/e/jila-science-seminar-151556
LOCATION:JILA\, 1900 Colorado Avenue\, Boulder\, CO 80309\, Boulder
GEO:40.008252;-105.268422
URL:https://localz.events/e/jila-science-seminar-151556
STATUS:CONFIRMED
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