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Spin wave excitations in Fe films grown on GaAs(113)A substrates
KTH, School of Information and Communication Technology (ICT), Material Physics, Material Physics, MF.
2008 (English)In: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, E-ISSN 1873-4766, Vol. 320, no 21, 2835-2838 p.Article in journal (Refereed) Published
Abstract [en]

The spin wave excitation and its size effect has been studied in Al- capped Fe. lms grown on lowsymmetry GaAs( 113) A substrates. The temperature dependence of saturation magnetization follows an effective Bloch's law as long as magnetization remains larger than about 70% of its saturation value. A signi. cant increase of the spin wave parameter B is found in Al- capped ultrathin Fe. lms grown on GaAs( 113) A compared to bulk Fe, Fe. lms on GaAs( 0 01) and other systems. This is explained as a result of the reduction in uniaxial magnetic anisotropy observed in this orientation for the same thickness range. However, this observed uniaxial magnetic anisotropy is found to be a likely reason for stabilizing the ferromagnetism.

Place, publisher, year, edition, pages
2008. Vol. 320, no 21, 2835-2838 p.
Keyword [en]
spin wave, Mermin-Wagner theorem, ultrathin Fe film, GaAs(113)A, molecular-beam epitaxy
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Identifiers
URN: urn:nbn:se:kth:diva-101864DOI: 10.1016/j.jmmm.2008.06.030ISI: 000258395400051Scopus ID: 2-s2.0-54249169968OAI: oai:DiVA.org:kth-101864DiVA: diva2:553391
Note

QC 20120919

Available from: 2012-09-19 Created: 2012-09-05 Last updated: 2017-12-07Bibliographically approved

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