Impedance spectra of field-aligned CrO2 needle-shape powders

C. M. Fu*, Y. C. Chao, S. H. Hung, C. P. Lin, J. Tang

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


The frequency behaviour of the electrical properties of field-aligned CrO2 needle-shape powders has been investigated by the impedance spectroscopy method. The low frequencies R(f) increase with increasing θ, the angles between the applied current direction and the easy axis of the aligned samples. The specific frequency, of which a maximum -X(f) occurred, is varied towards the lower ones as θ increased. Analysis, based on classical electromagnetism as well as equivalent circuit method, has been performed to disclose the mechanism underlying for AC conductivity.

Original languageEnglish
Pages (from-to)283-286
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Issue number1-3
Publication statusPublished - 2004 Nov
Externally publishedYes
EventInternational Symposium on Advanced Magnetic Technologies - Taipei, Taiwan
Duration: 2003 Nov 132003 Nov 16


  • Half-metal
  • Impedance spectroscopy
  • Magneto-resistance

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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