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Hyperfine Interactions

, 240:76 | Cite as

Fe3C nanoparticle formation in Fe implanted HOPG and CVD diamond

  • Krishanlal Bharuth-RamEmail author
  • Hilary Masenda
  • Carsten Ronning
  • Hans Hofsäss
Article
  • 20 Downloads
Part of the following topical collections:
  1. Proceedings of the International Conference on Hyperfine Interactions and their Applications (HYPERFINE 2019), Goa, India, 10-15 February 2019

Abstract

We have conducted conversion electron Mössbauer spectroscopy (CEMS) studies of Fe-carbides produced in Fe implanted highly oriented pyrolytic graphite (HOPG) and CVD diamond substrates. The samples were implanted at room temperature with 57Fe ions with 40 keV and 60 keV, respectively, and corresponding fluences of 1.0·1016/cm2 and 5·1015/cm2. The formation of magnetic structures in the spectra was monitored with CEMS measurement after annealing the samples at temperatures up to 700 °C. After the high temperature annealing, the main components in the spectra were sextets whose line shapes displayed strong, asymmetric distortions, consistent with those due the formation of nanoclusters. The hyperfine magnetic fields Bhf = 21.6 T, 20.0 T and 18 (1) T were in good agreement with those observed previously for Fe3C nanoclusters 10–20 nm in size.

Keywords

Mössbauer spectroscopy; HOPG CVD diamond Fe3C nanoparticles 

Notes

Acknowledgements

The authors acknowledge the support of the National Research Foundation (South Africa) and of the Alexander von Humboldt (AvH) Foundation within the framework its of “Institutspartnerschaft”.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.School of Chemistry and PhysicsUniversity of KwaZulu-NatalDurbanSouth Africa
  2. 2.Physics DepartmentDurban University of TechnologyDurbanSouth Africa
  3. 3.School of PhysicsUniversity of the WitwatersrandJohannesburgSouth Africa
  4. 4.Institute for Solid State PhysicsFriedrich-Schiller University of JenaJenaGermany
  5. 5.Second Physics InstituteUniversity of GöttingenGöttingenGermany

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