Nonstoichiometry, Defects and Transport Properties in MgB2

Preprint

24 May 2001

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0105478

Abstract

The local composition Mg:B of MgB2 powder was systematically changed through annealing. Correlations were observed between the Mg loss and the lattice parameters a/c and the microstrain of MgB2. Direct wavelength-dispersive-spectrum and XRD measurements on ceramic samples with different residual resistivity ratios suggested that the transport property of MgB2 might be affected by this Mg-deficiency, but oxygen-related defects may play a more important role.

Keywords

TRANSPORT PROPERTY
PROPERTIES IN MGB2
LOCAL COMPOSITION
NONSTOICHIOMETRY
COMPOSITION MG
ANNEALING

All Related Versions

Version 1, 2001-05-24, ArXiv
Published version: Physica C: Superconductivity and its Applications, 377 (1-2), 7.

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