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Proximity-induced magnetism in Pt layered with rare-earth–transition-metal ferrimagnetic alloys.

Swindells, C. and Nicholson, B. and Inyang, O. and Choi, Y. and Hase, T. and Atkinson, D. (2020) 'Proximity-induced magnetism in Pt layered with rare-earth–transition-metal ferrimagnetic alloys.', Physical review research., 2 (3). 033280.


The proximity-induced moment (PIM) in heavy metal layers may play a significant role in heterostructured spintronic systems. In particular, the PIM of a heavy metal adjacent to a magnetic layer has been linked to interfacial spin transport behavior. Element-resolved x-ray magnetic measurements were used to investigate PIM in Pt layered with two different rare-earth (RE):3d transition-metal (TM) ferrimagnetic alloys in which the net moment was dominated by either the RE or the TM at room temperature. We observed significant PIM in Pt confined to a 2-nm interfacial region for Pt/Co77Gd23 and Pt/(Fe50Co50 )77Gd23 and, in both cases, the PIM was parallel to the TM sublattice rather than the RE or the net moment. Our results highlight the prominence of the d − d mediated interactions between the Pt and the constituents of the ferrimagnetic RE:TM alloys over the net macroscopic moment.

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Publisher statement:Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Date accepted:29 July 2020
Date deposited:21 August 2020
Date of first online publication:20 August 2020
Date first made open access:21 August 2020

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