Interlayer exchange coupling in Pt/Co/Ru and Pt/Co/Ir superlattices

Sabit Karayev, Peyton D. Murray, Durga Khadka, T. R. Thapaliya, Kai Liu, S. X. Huang

Research output: Contribution to journalArticle

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Abstract

Magnetic multilayer thin films with perpendicular magnetic anisotropy (PMA) and interfacial Dzyaloshinskii-Moriya interaction (iDMI) are of intense interest for realizing magnetic skyrmions and modifying topological spin textures. We systematically investigate interlayer exchange coupling (IEC) in Pt/Co/Ru(Ir) superlattices that have PMA and large iDMI. The IEC is greatly tunable by varying Ru(Ir) or Pt thickness and the antiferromagnetic IEC is as large as 1.3mJ/m2 that is on the same order of magnitude as the iDMI. We find unusual magnetic hysteresis loop crossing between field-ascending and -descending magnetization curves. Furthermore, we identify magnetic phase diagrams for antiferromagnetic IEC and hysteresis loop crossing with respect to Ru(Ir) and Pt thickness. Our experimental findings may open a way in the development of synthetic antiferromagnetic spintronics and/or the realization of antiferromagnetic skyrmions.

Original languageEnglish (US)
Article number041401
JournalPhysical Review Materials
Volume3
Issue number4
DOIs
StatePublished - Apr 8 2019

Fingerprint

Exchange coupling
Superlattices
superlattices
interlayers
Magnetic anisotropy
Hysteresis loops
hysteresis
Magnetic multilayers
Magnetic hysteresis
Magnetoelectronics
anisotropy
Multilayer films
interactions
Phase diagrams
Magnetization
textures
Textures
phase diagrams
Thin films
magnetization

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Interlayer exchange coupling in Pt/Co/Ru and Pt/Co/Ir superlattices. / Karayev, Sabit; Murray, Peyton D.; Khadka, Durga; Thapaliya, T. R.; Liu, Kai; Huang, S. X.

In: Physical Review Materials, Vol. 3, No. 4, 041401, 08.04.2019.

Research output: Contribution to journalArticle

Karayev, Sabit ; Murray, Peyton D. ; Khadka, Durga ; Thapaliya, T. R. ; Liu, Kai ; Huang, S. X. / Interlayer exchange coupling in Pt/Co/Ru and Pt/Co/Ir superlattices. In: Physical Review Materials. 2019 ; Vol. 3, No. 4.
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