Magnetism in disordered Pd2-xNixTiSn alloys

The influence has been studied of local chemical disorder on the magnetic p roperties of Pd2-xNixTiSn Heusler-type alloys by spin-polarised tight-bindi ng linearized muffin tin orbital (TB LMTO) method within the atomic sphere approximation, The self-consistent LMTO calculations suggested that the mag netic moment in Pd2-xNixTiSn alloys exist only for disordered systems for w hich palladium atoms are located on titanium positions. The value of the ma gnetic moment on the titanium atom depends strongly on the local environmen t and our calculations indicated that it changes as a function of disorder from 0 to 0.3 mu(B). (C) 2000 Elsevier Science B.V, All rights reserved.