Effect of Mo content on the structural and physical properties of Cr100-xMox alloys
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Date
2014
Journal Title
Journal ISSN
Volume Title
Publisher
South African Institute of Physics
Abstract
Alloying Cr with Mo, which is isoelectric with it, shows an unexpected decrease in
the Néel temperature (TN) with an increase in Mo concentration. This is attributed to a
delocalization of the 3-d bands in Cr through the introduction of 4-d electrons of Mo. In the
present investigation the effect of Mo concentration on the structural, magnetic and electrical
properties of Cr is systematically studied. A series of Cr100-xMox
alloys, with x = 0, 3, 7, 15 and
25, was prepared and the actual concentrations established using electron microprobe analyses.
XRD studies confirm the bcc structure of these alloys as in pure Cr and indicate an increase in
lattice constant with an increase in Mo concentration. The crystallite sizes calculated from
these results for the Cr100-xMox
alloys ranges between 15 and 30 nm. The physical properties of
these alloys were investigated through magnetic susceptibility (χ), Seebeck coefficient (S),
electrical resistivity (ρ) and Hall coefficient (RH) as function of temperature (T) measurements.
TN values obtained from these measurements are comparable.
Description
Proceedings of South African Institute of Physics (SAIP), 2014. The 59th annual conference of the South African Institute of Physics.
Keywords
Alloys
Citation
Chavan, A.U et al. 2014. Effect of Mo content on the structural and physical properties of Cr100-xMox alloys . Proceedings of South African Institute of Physics, 2014. The 59th annual conference of the South African Institute of Physics