Tailoring anisotropy and domain structure in amorphous TbCo thin films through combinatorial methods

Andreas Frisk, Fridrik Magnus, Sebastian George, Unnar B. Arnalds, Gabriella Andersson

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

We apply an in-plane external magnetic field during growth of amorphous TbCo thin films and examine the effects on the magnetic anisotropy and domain structure. A combinatorial approach is employed throughout the deposition and analysis to study a continuous range of compositions between 7-95 at.% Tb. Magnetometry measurements show that all samples have a strong out-of-plane anisotropy, much larger than any in-plane components, regardless of the presence of a growth field. However, magnetic force microscopy demonstrates that the growth field does indeed have a large effect on the magnetic domain structure, resulting in elongated domains aligned along the imprinting field direction. The results show that the anisotropy can be tuned in intricate ways in amorphous TbCo films giving rise to unusual domain structures. Furthermore the results reveal that a combinatorial approach is highly effective for mapping out these material properties.

Original languageEnglish
Article number035005
JournalJournal of Physics D: Applied Physics
Volume49
Issue number3
DOIs
Publication statusPublished - 9 Dec 2015

Bibliographical note

Funding Information:
This work was funded by the Swedish Research Council (VR), The Swedish Foundation for International Cooperation in Research and Higher Education (STINT), and UBA acknowledges funding from the Icelandic Research Fund grant nr. 141518-051. The authors thank the IBA group at the Tandem laboratory at Uppsala University for their help with RBS measurements and analysis.

Publisher Copyright:
© 2016 IOP Publishing Ltd.

Other keywords

  • amorphous magnetic materials
  • domain structure
  • magnetic anisotropy
  • magnetic properties of thin films

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