Interlayer exchange coupling with Ir/(Ru, Mo, or W)/Ir composite spacers in perpendicular synthetic antiferromagnets

Authors
Park, Hee-GyumYun, Deok HyunJeong, Won MinLee, OukJaeMin, Byoung-Chul
Issue Date
2021-08
Publisher
KOREAN PHYSICAL SOC
Citation
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.79, no.4, pp.401 - 406
Abstract
We have experimentally studied the oscillatory interlayer exchange coupling (IEC) strength in synthetic antiferromagnets consisting of [Pt/Co](4)/Ir/(Ru, Mo or W)/Ir/[Co/Pt](4) with perpendicular magnetization. The Ir/(Ru, Mo or W)/Ir composite spacer enables us to obtain a substantial IEC in perpendicular synthetic antiferromagnets. The IEC with Ir/Ru/Ir spacers is as large as that with a single Ru or Ir spacer. The Ir/Mo (or W)/Ir gives rise to much larger IEC than a single Mo (or W) spacer because of the Ir insertion. Based on the results with varying the Ru (or Mo) thickness, we find that the two extremal spanning vectors of Ru (or Mo) mainly determine the oscillation periods of IEC. The Ir insertion layer affects not only the magnitude of IEC but also the peak position. With increasing the Ir thickness, the position of IEC peak moves toward a thicker spacer range. This intriguing thickness dependence of composite spacers offers a possibility to tune both the J(ex) and spacer thickness for the SAF-based spintronic applications.
Keywords
LAYER THICKNESS; OSCILLATIONS; PERIOD; CO/RU; Interlayer exchange coupling; Synthetic antiferromagnet; Perpendicular magnetic anisotropy; Magnetoresistive random access memory; Spintronics
ISSN
0374-4884
URI
https://pubs.kist.re.kr/handle/201004/116661
DOI
10.1007/s40042-021-00251-7
Appears in Collections:
KIST Article > 2021
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE