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Double magnetic proximity in Fe/Fe0.32V0.68 superlattices

Double magnetic proximity in Fe/Fe0.32V0.68 superlattices

Title: Double magnetic proximity in Fe/Fe0.32V0.68 superlattices
Author: Palonen, H.
Magnus, Fridrik   orcid.org/0000-0003-2606-8559
Hjörvarsson, Björgvin   orcid.org/0000-0003-1803-9467
Date: 2018-10-12
Language: English
Scope: 144419
University/Institute: Háskóli Íslands
University of Iceland
School: Verkfræði- og náttúruvísindasvið (HÍ)
School of Engineering and Natural Sciences (UI)
Department: Raunvísindastofnun (HÍ)
Science Institute (UI)
Series: Physical Review B;98(14)
ISSN: 2469-9950
DOI: 10.1103/PhysRevB.98.144419
Subject: Magnetic phase transitions; Proximity effect; Spintronics; Rafsegulfræði
URI: https://hdl.handle.net/20.500.11815/2020

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Palonen, H., Magnus, F., & Hjörvarsson, B. (2018). Double magnetic proximity in Fe/Fe0.32 V0.68 superlattices. Physical Review B, 98(14) doi:10.1103/PhysRevB.98.144419


The conventional magnetic proximity effect and double-proximity effects were studied in a set of fully coherent high-quality Fe/Fe0.32V0.68 superlattices. Applying a simple model to the saturation magnetization, it is seen that the magnetic proximity effect is gigantic in magnitude in the alloy—the magnetization is enhanced by 20–450 % and the ordering temperature is enhanced by a factor of 2. The magnitude of the effect can be explained by the large susceptibility of the alloy above its intrinsic ordering temperature. Additionally, a strong dependence of the ordering temperature of single monolayers of Fe on the interlayer distance is observed. The results give insight into new ways of using alloying and large magnetic susceptibility combined with magnetic proximity effects to enhance the functionality of materials that are of interest for spintronic devices.


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