Structural and magnetic properties of exchange-spring FeTaN/FeSm/FeTaN multilayers

G. Gubbiotti, P. Vavassori, G. Carlotti, M. Madami, G. Barucca, P. Mengucci, J. Weston, G. Zangari

Research output: Contribution to journalConference articlepeer-review

Abstract

The structural and magnetic properties of FeTaN/FeSm/FeTaN multilayers, deposited by dc magnetron sputtering, have been investigated as function of the alloy layers thickness. Structural and morphological characterizations, accomplished by transmission electron microscopy, X-ray reflectivity and grazing-incidence X-ray diffraction, account for a well-defined layered structure of the multilayers with a limited interface roughness. The magnetization reversal process is examined experimentally using magneto-optical Kerr vector magnetometry by measuring the longitudinal and transverse hysteresis loops. It is found that, for soft layer thickness above 3.2 nm, the magnetization reversal occurs via the formation of a stable exchange-spring state in which the magnetic moments of the outermost soft layer gradually rotates away from the unswitched underlying hard layer.

Original languageEnglish (US)
Pages (from-to)285-290
Number of pages6
JournalSurface Science
Volume566-568
Issue number1-3 PART 1
DOIs
StatePublished - Sep 20 2004
EventProceedings of the 22nd European Conference on Surface Science - Prague, Czech Republic
Duration: Sep 7 2003Sep 12 2003

Keywords

  • Alloys
  • Magnetic interfaces
  • Magnetic phenomena (cyclotron resonance, phase transitions, etc.)
  • Surface structure, morphology, roughness, and topography

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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