Coexistence of different magnetic phases in Dy/Y superlattices caused by growth induced nanostructures

Katharina Theis-Bröhl, K. A. Ritley, C. P. Flynn, J. E. Van Nostrand, D. G. Cahill, K. Harnacher, H. Kaiser, J. J. Rhyne

Research output: Contribution to journalArticlepeer-review


Epitaxial Dy/Y rare earth superlattices were prepared by molecular beam epitaxy on Ta(211) and Nb(211) buffer layers on α-Al2O3(1100) and characterized via in situ reflection high-energy electron diffraction (RHEED), in situ scanning tunneling microscopy (STM) and ex situ X-ray and neutron diffraction. The Y buffer and the Dy/Y superlattice are found to grow strongly faceted on the Ta or Nb(211) buffer, and form 'growth induced' nanostructures with two different superlattice types on both facet surfaces. Magnetic measurements show two coexisting magnetic phases that are obtained in the temperature range below the Néel temperature. We develop a model to interpret this behavior in connection with the results of structural and magnetic measurements.

Original languageEnglish (US)
Pages (from-to)27-37
Number of pages11
JournalJournal of Magnetism and Magnetic Materials
Issue number1-2
StatePublished - Feb 1997


  • Exchange interactions
  • Magnetic anisotropy
  • Magnetism in interface structures
  • Thin film growth

ASJC Scopus subject areas

  • Condensed Matter Physics


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