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Experimental investigation of the spin reorientation of Co/Au based magnetic nanodot arrays

Gridneva, Lidia LU ; Persson, A.; Nino, M. A.; Camarero, J.; de Miguel, J. J.; Miranda, R.; Hofer, C.; Teichert, C.; Bobek, T. and Locatelli, A., et al. (2008) In Physical Review B (Condensed Matter and Materials Physics) 77(10).
Abstract
(Co/Au) and (Au/ Co/ Au) nanomagnet arrays grown on nanostructured self-organized SiGe templates have been characterized by means of x-ray photoemission electron microscopy, x-ray magnetic circular dichroism, and by extended x-ray absorption spectroscopy using synchrotron radiation. In-plane magnetization is observed at room temperature for practically all Co thicknesses, a stable macroscopic perpendicular magnetic order only at low temperature. The spin reorientation transition in these dot arrays takes place for smaller Co thicknesses over a broader thickness range than in two-dimensional systems. This finding appears to be related with structural relaxation modifications, occurring within the local Co atom environment, which are not... (More)
(Co/Au) and (Au/ Co/ Au) nanomagnet arrays grown on nanostructured self-organized SiGe templates have been characterized by means of x-ray photoemission electron microscopy, x-ray magnetic circular dichroism, and by extended x-ray absorption spectroscopy using synchrotron radiation. In-plane magnetization is observed at room temperature for practically all Co thicknesses, a stable macroscopic perpendicular magnetic order only at low temperature. The spin reorientation transition in these dot arrays takes place for smaller Co thicknesses over a broader thickness range than in two-dimensional systems. This finding appears to be related with structural relaxation modifications, occurring within the local Co atom environment, which are not necessarily connected with the orbital moment variations. These variations appear in the form of a systematic increase, correlated with the existence of out-of-plane magnetization. (Less)
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keywords
THIN-FILMS, SELF-ORGANIZATION, MICROSCOPIC ORIGIN, CIRCULAR-DICHROISM, AU(111), SPECTROSCOPY, NANOSTRUCTURES, CO, SURFACES, ANISOTROPY
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Physical Review B (Condensed Matter and Materials Physics)
volume
77
issue
10
publisher
American Physical Society
external identifiers
  • wos:000254542700075
  • scopus:41549160797
ISSN
1098-0121
DOI
10.1103/PhysRevB.77.104425
language
English
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yes
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94177a4f-f1c5-4fcf-9424-052c18cc94d6 (old id 1416712)
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2009-06-16 12:00:37
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@article{94177a4f-f1c5-4fcf-9424-052c18cc94d6,
  abstract     = {(Co/Au) and (Au/ Co/ Au) nanomagnet arrays grown on nanostructured self-organized SiGe templates have been characterized by means of x-ray photoemission electron microscopy, x-ray magnetic circular dichroism, and by extended x-ray absorption spectroscopy using synchrotron radiation. In-plane magnetization is observed at room temperature for practically all Co thicknesses, a stable macroscopic perpendicular magnetic order only at low temperature. The spin reorientation transition in these dot arrays takes place for smaller Co thicknesses over a broader thickness range than in two-dimensional systems. This finding appears to be related with structural relaxation modifications, occurring within the local Co atom environment, which are not necessarily connected with the orbital moment variations. These variations appear in the form of a systematic increase, correlated with the existence of out-of-plane magnetization.},
  articleno    = {104425},
  author       = {Gridneva, Lidia and Persson, A. and Nino, M. A. and Camarero, J. and de Miguel, J. J. and Miranda, R. and Hofer, C. and Teichert, C. and Bobek, T. and Locatelli, A. and Heun, S. and Carlson, Stefan and Arvanitis, D.},
  issn         = {1098-0121},
  keyword      = {THIN-FILMS,SELF-ORGANIZATION,MICROSCOPIC ORIGIN,CIRCULAR-DICHROISM,AU(111),SPECTROSCOPY,NANOSTRUCTURES,CO,SURFACES,ANISOTROPY},
  language     = {eng},
  number       = {10},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Experimental investigation of the spin reorientation of Co/Au based magnetic nanodot arrays},
  url          = {http://dx.doi.org/10.1103/PhysRevB.77.104425},
  volume       = {77},
  year         = {2008},
}