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 journalArticle

27 Citations (Scopus)

Abstract

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
Volume65
Issue number18
Publication statusPublished - 2002 May 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Magnetization and <sup>11</sup>B NMR study of Mg<sub>1-x</sub>Al<sub>x</sub>B<sub>2</sub> superconductors'. Together they form a unique fingerprint.

  • Cite this

    Pissas, M., Papavassiliou, G., Karayanni, M., Fardis, M., Maurin, I., Margiolaki, I., Prassides, K., Prassides, K., Christides, C., & Christides, C. (2002). Magnetization and 11B NMR study of Mg1-xAlxB2 superconductors. Physical Review B - Condensed Matter and Materials Physics, 65(18), 1845141-1845145. [184514].