Magnetic Structure and Strain State in Fe/V Superlattices Studied by 57Fe+ Emission and Conversion Electron Mössbauer Spectroscopy

Torben E. Mølholt, Sveinn Ólafsson, Haraldur P. Gunnlaugsson, Bingcui Qi*, Karl Johnston, Roberto Mantovan, Hilary Masenda, Krish Bharuth-Ram, Hafliði P. Gíslason, Guido Langouche, Deena Naidoo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The magnetic properties of the Fe/V superlattices were studied by conventional Conversion Electron Mössbauer Spectroscopy (CEMS) and online (Formula presented.) Fe (Formula presented.) emission Mössbauer Spectroscopy (eMS) at room temperature (RT) at ISOLDE/CERN. The unique depth-enhanced sensitivity and ultradiluted regime of the probe atoms adopted in this eMS facility enabled the investigation of the magnetic structures and the strain state in the superlattice layers and at the interfaces. The magnetic spectra of the superlattices were found to depend on both the local lattice environment and the strain state of the Fe-lattices. The magnetic polarisation in the V-layers or at the interfaces was not detected at RT. Spectral broadening was evident in the single line component of the eMS due to Fe ions substituted at V-lattice sites in the V-layers of the superlattice, attributable to the lattice strain in the V-layers. Our study demonstrate that with the online eMS technique the effects of the strain state of the superlattice on the magnetic properties of the Fe-layer in the Fe/V multilayer structures can be detected.

Original languageEnglish
Article number961
Issue number7
Publication statusPublished - 10 Jul 2022

Bibliographical note

Funding Information:
The European Union Sixth Framework through RII3-EURONS; South African National Research Foundation; German BMBF (contract no. 05KK4TS1/9);Icelandic Research Fund.

Publisher Copyright:
© 2022 by the authors.

Other keywords

  • Fe/V superlattices
  • hyperfine parameters
  • magnetic properties
  • Mössbauer Spectroscopy
  • strain


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