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|Title:||Ferromagnetism in Mn doped half-heusler NiTiSn: Theory and experiment|
|Publisher:||AMER INST PHYSICS|
|Citation:||APPLIED PHYSICS LETTERS, 89(21), -|
|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|
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