Magnetic modes in Ni nanowires

M. I. Chipara, R. Skomski, D. J. Sellmyer

Research output: Contribution to journalConference article

24 Scopus citations

Abstract

Spin-wave modes in Ni nanowires electrodeposited in alumina are investigated by model calculations and magnetic resonance experiments. Since the wires are very thin, the main magnetization variation at low temperatures is parallel to the wires. The corresponding modes - probed by the magnetic resonance and responsible for the spontaneous magnetization of the wires - are generally localized. A spin-wave analysis of the magnetization yields a low-temperature contribution linear in T and proportional to the Bloch-wall width. The large broadening of the resonance lines, above 0.1 T for fields parallel to the wires is explained by the real-structure distribution of sharp localized resonance modes.

Original languageEnglish (US)
Pages (from-to)246-250
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume249
Issue number1-2
DOIs
StatePublished - Aug 1 2002
EventInternational Workshop on Magnetic Wires - San Sebastian, Spain
Duration: Jun 20 2001Jun 22 2001

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Keywords

  • Ferromagnetic resonance
  • Magnetic anisotropy
  • Nanowires
  • Spin waves
  • Spontaneous magnetization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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