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  Study of magnetization reversal in layered heterostructures by vector magnetometry

Markou, A., Mourkas, A., Koume, A., Panagiotopoulos, I., Stoleriu, L., & Stancu, A. (2018). Study of magnetization reversal in layered heterostructures by vector magnetometry. Journal of Magnetism and Magnetic Materials, 445, 95-102. doi:10.1016/j.jmmm.2017.08.084.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-002E-266F-0 Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-002E-2965-A
Genre: Zeitschriftenartikel

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 Urheber:
Markou, A.1, Autor           
Mourkas, A.2, Autor
Koume, A.2, Autor
Panagiotopoulos, I.2, Autor
Stoleriu, L.2, Autor
Stancu, A.2, Autor
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              

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 Zusammenfassung: Multilayered films consisting of layer stacks with different anisotropies are studied by vector magnetometry i.e. simultaneous measurement of the components Mx, My along and perpendicular to the applied field respectively. The quantity root M-x(2) + M-y(2) is used as measure of the homogeneity of the reversal. For the [Co(6 angstrom)/Pt(15 angstrom)](4)/(Pt(s))/[Co(10 angstrom)/Pt(15 angstrom)](4) with s = 0-45 angstrom series consisting of a perpendicular anisotropy bottom four- bilayer- stack coupled to a planar anisotropy top four- bilayer- stack a peak of the My component is clearly observed at the Mx coercivity. This is a sign of homogeneous reversal but it can be shown that similar effects can arise by decoupling of two layers with different ( in- plane/ perpendicular) anisotropies which is the case for s > 15 angstrom. In order to study the latter effect, a [Co(6 angstrom)/Pt(15 angstrom)](4)/W(15 angstrom)/Co(24 angstrom) sample is used as a reference as it consists of a perpendicular anisotropy bottom four- bilayer- stack coupled to a vanishing anisotropy top Co layer through a W layer ( which creates a magnetically inactive interface permitting only dipolar coupling). In contrast for [Co(5 angstrom)/Pt (10 angstrom)](6)/Pt(s)/[Ni(15 angstrom)/Pt(5 angstrom)](6) series consisting of two different coercivity stacks which both have perpendicular anisotropy the decoupling does not manifest by appearance of peaks in the M-y component. (C) 2017 Published by Elsevier B. V.

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Sprache(n): eng - English
 Datum: 2018-01-012018-01-01
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000413148700014
DOI: 10.1016/j.jmmm.2017.08.084
 Art des Abschluß: -

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Titel: Journal of Magnetism and Magnetic Materials
  Andere : Journal of Magnetism and Magnetic Materials: MMM
  Kurztitel : J. Magn. Magn. Mater.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Amsterdam : NH, Elsevier
Seiten: - Band / Heft: 445 Artikelnummer: - Start- / Endseite: 95 - 102 Identifikator: ISSN: 0304-8853
CoNE: https://pure.mpg.de/cone/journals/resource/954925512464