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Disorder-induced microscopic magnetic memory

Pierce, MS; Buechler, CR; Sorensen, LB; Turner, JJ; Kevan, SD; Jagla, EA; Deutsch, JM; Mai, T; Narayan, O and Davies, JE, et al. (2005) In Physical Review Letters 94(1).
Abstract
Using coherent x-ray speckle metrology, we have measured the influence of disorder on major loop return point memory (RPM) and complementary point memory (CPM) for a series of perpendicular anisotropy Co/Pt multilayer films. In the low disorder limit, the domain structures show no memory with field cycling-no RPM and no CPM. With increasing disorder, we observe the onset and the saturation of both the RPM and the CPM. These results provide the first direct ensemble-sensitive experimental study of the effects of varying disorder on microscopic magnetic memory and are compared against the predictions of existing theories.
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publication status
published
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Physical Review Letters
volume
94
issue
1
publisher
American Physical Society
external identifiers
  • wos:000226308000076
  • scopus:18144405398
ISSN
1079-7114
DOI
10.1103/PhysRevLett.94.017202
language
English
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yes
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573fbf11-3d1f-4197-a092-9e269c0c7b20 (old id 255093)
date added to LUP
2007-08-10 08:36:20
date last changed
2017-03-12 03:35:14
@article{573fbf11-3d1f-4197-a092-9e269c0c7b20,
  abstract     = {Using coherent x-ray speckle metrology, we have measured the influence of disorder on major loop return point memory (RPM) and complementary point memory (CPM) for a series of perpendicular anisotropy Co/Pt multilayer films. In the low disorder limit, the domain structures show no memory with field cycling-no RPM and no CPM. With increasing disorder, we observe the onset and the saturation of both the RPM and the CPM. These results provide the first direct ensemble-sensitive experimental study of the effects of varying disorder on microscopic magnetic memory and are compared against the predictions of existing theories.},
  author       = {Pierce, MS and Buechler, CR and Sorensen, LB and Turner, JJ and Kevan, SD and Jagla, EA and Deutsch, JM and Mai, T and Narayan, O and Davies, JE and Liu, K and Hunter Dunn, Jonathan and Chesnel, KM and Kortright, JB and Hellwig, O and Fullerton, EE},
  issn         = {1079-7114},
  language     = {eng},
  number       = {1},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Disorder-induced microscopic magnetic memory},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.94.017202},
  volume       = {94},
  year         = {2005},
}