Magnetization and 11B NMR study of Mg1-xAlxB2 superconductors

M. Pissas, G. Papavassiliou, M. Karayanni, M. Fardis, I. Maurin, I. Margiolaki, K. Prassides, K. Prassides, C. Christides, C. Christides

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


We demonstrate the magnetic-field distribution of the pure vortex state in lightly doped Mg1-xAlxB2 (x ≤0.025) powder samples, by using 11B nuclear magnetic resonance in magnetic fields of 23.5 and 47 kOe. The magnetic-field distribution at T=5 K is Al-doping dependent, revealing a considerable decrease of anisotropy in respect to pure MgB2. This result correlates nicely with magnetization measurements and is consistent with σ-band hole driven superconductivity for MgB2.

Original languageEnglish
Article number184514
Pages (from-to)1845141-1845145
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number18
Publication statusPublished - 2002 May 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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