Anisotropic superconducting properties of aligned MgB2 crystallites

Preprint

14 March 2001

preprint
Published by arXiv in arXiv

Abstract

Samples of aligned MgB2 crystallites have been prepared, allowing the identification of an upper critical field anisotropy Hc2^{ab}/Hc2^{c} ~ 1.7. This implies an anisotropy of the coherence length xi_{ab}/xi_{c} ~ 1.3 with xi _{o,ab} ~ 70 A, xi_{o,c} ~ 54 A, and a mass anisotropy ratio m_{ab}/m_{c} ~ 0.6. A significant influence of Fe contamination was identified, possibly related to the purity of the raw materials.

Keywords

ANISOTROPIC SUPERCONDUCTING
SUPERCONDUCTING PROPERTIES
ALIGNED MGB2 CRYSTALLITES
CRYSTALLITES SAMPLES
MGB2 CRYSTALLITES
ANISOTROPY
HC2

All Related Versions

Version 1, 2001-03-14, ArXiv
Version 2, 2001-03-16, ArXiv
Version 3, 2001-03-16, ArXiv
Version 4, 2001-05-16, ArXiv
Published version: Physical Review Letters, 86 (26), 5974.

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