Oscillatory Decay of Magnetization Induced by Domain-Wall Stray Fields

Journal Article · Mon Apr 10 00:00:00 EDT 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.3462· OSTI ID:20216131

Thomas, Luc ^[1]; Luening, Jan ^[1]; Scholl, Andreas ^[2]; Nolting, Frithjof ^[2]; Anders, Simone ^[2]; Stoehr, Joachim ^[1]; Parkin, Stuart S. P. ^[1]

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1. IBM Research Division, Almaden Research Center, San Jose, California 95120-6099 (United States)
2. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

The demagnetization of a hard ferromagnetic layer via the fringing fields of domain walls created by reversing the moment of a neighboring soft ferromagnetic layer is explored experimentally. An unusual oscillatory decay of the magnetic moment of the hard layer is observed using structures in which the demagnetization occurs after a few hundred cycles. This surprising observation is confirmed on a microscopic scale by detailed imaging of the magnetization of the hard layer using high resolution photoemission electron microscopy and by micromagnetic simulations. (c) 2000 The American Physical Society.

• OSTI ID: 20216131
• Journal Information: Physical Review Letters, Vol. 84, Issue 15; Other Information: PBD: 10 Apr 2000; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DEMAGNETIZATION
DOMAIN STRUCTURE
COBALT ALLOYS
PLATINUM ALLOYS
CHROMIUM ALLOYS
THIN FILMS
FERROMAGNETIC MATERIALS
PHOTOEMISSION
ELECTRON MICROSCOPY
MAGNETIC CIRCULAR DICHROISM
EXPERIMENTAL DATA