Phenomenological analysis of the s-d exchange interaction in dilute Cu-Mn alloy at helium temperature

M.A. AL-Jalali*

Physics department, Faculty of Science, Taif University, Kingdom of Saudi Arabia  

Adv. Mater. Lett., 2014, 5 (1), pp 14-16

DOI: 10.5185/amlett.2013.5486

Publication Date (Web): Dec 28, 2013

E-mail: maljali@yahoo.com

Abstract


The S-d exchange interactions in dilute Cu-Mn alloys was studied on concentration (C) varying between 10.5 and 2081.8 ppm of Mn in Cu within the (0.03K–4.2K) temperature range. Using electrical resistivity data on those alloys, the s-d exchange integral (Jsd), which is negative, has calculated to show a clear dependence on (Ln C). This dependence, confirming thus the dominance of Kondo effect below 1000 ppm impurity concentration, but above this concentration, we expected an interference between Kondo effect and spin glass regime, which mean that spin glass regime has to prevail more than Kondo effect.

Keywords

S-D interaction, electrical resistivity, Jsd, kondo effect, spin glass.

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