Abstract
A binary Ising alloy A p B 1− p with competing exchange interactions is considered for concentration p< p m , below which ferromagnetism does not appear. The magnetic susceptibility (χ) and magnetization ( m) of such alloys are obtained assuming either J AB or J BB or both antiferromagnetic in nature and using the cluster-variational-approach. The susceptibility of alloys with p close to p m has a sharp peak at a temperature ( T g ). With further dilution ( p< p m ) the peak's height decreases and its position shifts towards lower temperature. The non-linear susceptibility shows nearly divergent behaviour around T g . The induced moment passes through a broad maximum as the temperature is lowered. Such behaviour of χ and m is very similar to that found in spin-glass phases and has been observed in a number of disordered alloys.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
