Magnetic domains in Ni-Mn-Ga martensitic thin films

V. A. Chernenko, R. Lopez Anton, M. Kohl, M. Ohtsuka, I. Orue, J. M. Barandiaran

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

A series of martensitic Ni52Mn24Ga24 thin films deposited on alumina ceramic substrates has been prepared by using RF (radio-frequency) magnetron sputtering. The film thickness, d, varies from 0.1 to 5.0 μm. Magnetic domain patterns have been imaged by the MFM (magnetic force microscopy) technique. A maze domain structure is found for all studied films. MFM shows a large out-of-plane magnetization component and a rather uniform domain width for each film thickness. The domain width, δ, depends on the film thickness as in the whole studied range of film thickness. This dependence is the expected one for magnetic anisotropy and magnetostatic contributions in a perpendicular magnetic domain configuration. The proportionality coefficient is also consistent with the values of saturation magnetization and magnetic anisotropy determined in the samples.

Original languageEnglish
Pages (from-to)5215-5224
Number of pages10
JournalJournal of Physics Condensed Matter
Volume17
Issue number34
DOIs
Publication statusPublished - 2005 Aug 31

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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