Nanogranular Co-Fe-Al-O sputtered thin films for magnetoelastic device applications in the GHz frequency range

J. C. Sohn, D. J. Byun, S. H. Lim

Research output: Contribution to journalConference article

30 Citations (Scopus)

Abstract

Co-Fe-Al-O nanogranular thin films for magnetoelastic device applications in the GHz frequency range are fabricated by RF-magnetron sputtering under an Ar+O2 atmosphere. A very large resistivity up to 400μΩcm, a saturation magnetization (4πMS) of 16kG and an anisotropy field of 45Oe are consistently obtained, resulting in excellent high-frequency magnetic properties, such as a high ferromagnetic resonance frequency of 2.3GHz combined with a large real part of permeability of 315. A saturation magnetostriction of 45ppm is achieved at a magnetic field as low as 20Oe.

Original languageEnglish
Pages (from-to)1500-1502
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume272-276
DOIs
Publication statusPublished - 2004 May 1
EventProceedings of the International Conference on Magnetism - Rome, Italy
Duration: 2003 Jul 272003 Aug 1

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Keywords

  • Co-Fe-Al-O nanogranular film
  • Ferromagnetic resonance frequency
  • Magnetoelastic device
  • Magnetostriction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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