Magnetic properties of amorphous mixed Ising spin systems in a transverse field

Abstract

The magnetic properties of amorphous mixed Ising ferrimagnetic (or ferromagnetic) systems with coordination numbers z=3 and z=4 consisting of spin 1/2 and spin 1 with a transverse field are investigated within the framework of an effective-field approximation. The phase diagrams and the total longitudinal and transverse magnetizations are obtained. We find a number of interesting phenomena in these quantities, due to the fluctuation of exchange interaction and the applied transverse field.