Chemical doping effect on the crystal structure and superconductivity of MgB2

Access & Terms of Use
metadata only access
Abstract
Substituent alloys of Mg1−xMxB2 with M=Ti, Zr, Mo, Mn, Fe, Ca, Al, Ag, Cu, Y, and Ho and 0x10% have been synthesized by the solid-state reaction. The solid solubility for most of these dopants at Mg site is found to be very low except for M=Al. In most of these alloys, the Vegard relationship holds as the doping level is low. The lattice constants for the fictitious compounds such as AgB2, CuB2, FeB2 have been extrapolated. The superconductivity transition temperature, Tc, shows a systematic changes with the doping level in some of these substituent alloys. Relevant mechanisms of superconductivity suppression have been discussed.
Persistent link to this record
DOI
Additional Link
Author(s)
Cheng, Cui
Zhao, Yong
Zhu, X
Nowotny, Janusz
Sorrell, Charles
Finlayson, T
Zhang, H
Supervisor(s)
Creator(s)
Editor(s)
Translator(s)
Curator(s)
Designer(s)
Arranger(s)
Composer(s)
Recordist(s)
Conference Proceedings Editor(s)
Other Contributor(s)
Corporate/Industry Contributor(s)
Publication Year
2003
Resource Type
Journal Article
Degree Type
UNSW Faculty