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Proximity effects on dimensionality and magnetic ordering in Pd/Fe/Pd trialyers
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Hase, Thomas P. A., Brewer, Matthew S., Arnalds, Unnar B., Ahlberg, Martina, Kapaklis, Vassilios, Björck, Matts, Bouchenoire, Laurence, Thompson, Paul, Haskel, Daniel, Choi, Yongseong, Lang, Jonathan, Sánchez-Hanke, Cecilia and Hjörvarsson, Björgvin (2014) Proximity effects on dimensionality and magnetic ordering in Pd/Fe/Pd trialyers. Physical Review B, Volume 90 (Number 10). Article number 104403 . doi:10.1103/PhysRevB.90.104403
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Official URL: http://dx.doi.org/10.1103/PhysRevB.90.104403
Abstract
The element-specific magnetization and ordering in trilayers consisting of 0.3–1.4 monolayer (ML) thick Fe layers embedded in Pd(001) has been determined using x-ray resonant magnetic scattering. The proximity to Fe induces a large moment in the Pd which extends ∼2nm from the interfaces. The magnetization as a function of temperature is found to differ significantly for the Fe and Pd sublattices: The Pd signal resembles the results obtained by magneto-optical techniques with an apparent three-dimensional (3D) to two-dimensional (2D) transition in spatial dimensionality for Fe thickness below ∼1ML. In stark contrast, the Fe data exhibits a 2D behavior. No ferromagnetic signal is obtained from Fe below the 2D percolation limit in Fe coverage (∼0.7ML), while Pd shows a ferromagnetic response for all samples. The results are attributed to the temperature dependence of the susceptibility of Pd and a profound local anisotropy of submonolayered Fe.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science > Physics | ||||||
| Journal or Publication Title: | Physical Review B | ||||||
| Publisher: | American Physical Society | ||||||
| ISSN: | 1098-0121 | ||||||
| Official Date: | 2 September 2014 | ||||||
| Dates: |
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| Volume: | Volume 90 | ||||||
| Number: | Number 10 | ||||||
| Article Number: | Article number 104403 | ||||||
| DOI: | 10.1103/PhysRevB.90.104403 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access |
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