Galvanomagnetic properties of disordered Mn semi-Heusler phases with Anderson localisation

The Anderson localisation has been observed in Heusler-type solid solutions where Mn replaces Ti or V in NiTiSb or CoVSb compounds respectively, due t o the atomic and magnetic disorders. The magnetoresistance, Hall effect, th ermopower and electron spin resonance of these solutions are investigated. Strong anomalies appear for the concentration range where a carrier localis ation occurs; the mobility of carriers is strongly reduced, the magnetoresi stance scales with the resistivity and the susceptibility of solid solution s.