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Sequential magnetic switching in Fe/MgO(001) superlattices

Magnus, F.; Warnatz, T.; Palsson, G. K.; Devishvili, A.; Ukleev, V.; Palisaitis, J.; Persson, P. O.A. and Hjörvarsson, B. (2018) In Physical Review B 97(17).
Abstract

Polarized neutron reflectometry is used to determine the sequence of magnetic switching in interlayer exchange coupled Fe/MgO(001) superlattices in an applied magnetic field. For 19.6 Å thick MgO layers we obtain a 90 periodic magnetic alignment between adjacent Fe layers at remanence. In an increasing applied field the top layer switches first followed by its second-nearest neighbor. For 16.4 Å MgO layers, a 180 periodic alignment is obtained at remanence and with increasing applied field the layer switching starts from the two outermost layers and proceeds inwards. This sequential tuneable switching opens up the possibility of designing three-dimensional magnetic structures with a predefined discrete switching sequence.

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author
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B
volume
97
issue
17
publisher
American Physical Society
external identifiers
  • scopus:85047725376
ISSN
2469-9950
DOI
language
English
LU publication?
no
id
387b7d90-6a1c-4104-bb1d-22ffbfb14f0e
date added to LUP
2018-06-13 13:41:55
date last changed
2018-06-13 13:41:55
@article{387b7d90-6a1c-4104-bb1d-22ffbfb14f0e,
  abstract     = {<p>Polarized neutron reflectometry is used to determine the sequence of magnetic switching in interlayer exchange coupled Fe/MgO(001) superlattices in an applied magnetic field. For 19.6 Å thick MgO layers we obtain a 90 periodic magnetic alignment between adjacent Fe layers at remanence. In an increasing applied field the top layer switches first followed by its second-nearest neighbor. For 16.4 Å MgO layers, a 180 periodic alignment is obtained at remanence and with increasing applied field the layer switching starts from the two outermost layers and proceeds inwards. This sequential tuneable switching opens up the possibility of designing three-dimensional magnetic structures with a predefined discrete switching sequence.</p>},
  articleno    = {174424},
  author       = {Magnus, F. and Warnatz, T. and Palsson, G. K. and Devishvili, A. and Ukleev, V. and Palisaitis, J. and Persson, P. O.A. and Hjörvarsson, B.},
  issn         = {2469-9950},
  language     = {eng},
  month        = {05},
  number       = {17},
  publisher    = {American Physical Society},
  series       = {Physical Review B},
  title        = {Sequential magnetic switching in Fe/MgO(001) superlattices},
  url          = {http://dx.doi.org/},
  volume       = {97},
  year         = {2018},
}