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Control of Double‐Vortex Domain Configurations in a Shape‐Engineered Trilayer Nanomagnet System
Author(s) -
Huang Lei,
Schofield Marvin A.,
Zhu Yimei
Publication year - 2010
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200902488
Subject(s) - nanomagnet , electron holography , materials science , remanence , vortex , ferromagnetism , condensed matter physics , magnetic domain , chirality (physics) , domain (mathematical analysis) , nanotechnology , magnetic field , magnetization , physics , mechanics , mathematics , quantum mechanics , mathematical analysis , chiral symmetry breaking , quark , transmission electron microscopy , nambu–jona lasinio model
A shape‐engineered trilayer ferromagnetic/non‐magnetic/ferromagnetic nanostructure is lithographically fabricated to support four stable flux‐closure domain configurations at remanence. Quantitative phase measurements using electron holography reveal the detailed magnetization reversal process and demonstrate how four domain states with distinct vortex chirality combinations can be controllably achieved by systematic manipulation of the applied magnetic field (see image).