Electronic phase-separation in Mg1-xB2 probed by CESR

R. R. Urbano, P. G. Pagliuso, C. Rettori, S. W. Cheong

Research output: Contribution to journalConference articlepeer-review


Temperature dependent conduction electron spin resonance (CESR) was performed in the normal and vortex-state of Mg1-xB2. Fine powder of polycrystalline samples with x≅0 and 0.15 were studied at 9.48 GHz (Hr≃3380 Oe). Our results suggest the interesting effect associated with the presence of Mg deficiency in this compound: a phase separated Mg-vacancy rich (insulating) and Mg-vacancy poor (superconducting metal) regions for the x≃0.15 sample. The depinning temperature, T p, for x≅0.15 sample was obtained and confronted with previous results.

Original languageEnglish (US)
Pages (from-to)832-833
Number of pages2
JournalPhysica C: Superconductivity and its applications
Issue number1-4
StatePublished - Aug 2004
EventProceedings of the International Conference on Materials - Rio de Janeiro, Brazil
Duration: May 25 2003May 30 2003

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


  • Magnetic field distribution
  • Phase separation
  • Superconductivity


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