Ferromagnetism in Mn doped half-heusler NiTiSn: Theory and experiment

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Ferromagnetism in Mn doped half-heusler NiTiSn: Theory and experiment

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Title: Ferromagnetism in Mn doped half-heusler NiTiSn: Theory and experiment
Author: SANYAL, B; ERIKSSON, O; SURESH, KG; DASGUPTA, I; NIGAM, AK; NORDBLAD, P
Abstract: In this letter, the authors show by ab initio density functional calculations and experiments that Mn doped semiconducting half-Heusler compound NiTiSn can exhibit room-temperature ferromagnetism. Curie temperatures were calculated by Monte Carlo simulations using calculated Heisenberg exchange parameters in an ab initio Green's function approach. The calculated temperature exceeds room temperature for a Mn doping concentration of 22%. Magnetic measurements confirm the presence of possible intrinsic ferromagnetism in these systems. This brings up the possibility of considering this system as a potential candidate for use in room-temperature spintronic devices. (c) 2006
URI: http://dx.doi.org/10.1063/1.2393166
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4342
http://hdl.handle.net/10054/4342
Date: 2006


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