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

Autor: Yongseong Choi, Del Atkinson, B. Nicholson, C. Swindells, O. Inyang, Thomas P. A. Hase
Rok vydání: 2020
Předmět:
Zdroj: Physical Review Research
ISSN: 2643-1564
Popis: 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.
Databáze: OpenAIRE