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          Institute: MPI für Chemische Physik fester Stoffe     Collection: publications 2013     Display Documents



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ID: 668937.0, MPI für Chemische Physik fester Stoffe / publications 2013
Exchange-spring like magnetic behavior of the tetragonal Heusler compound Mn2FeGa as a candidate for spin-transfer torque
Authors:Gasi, T.; Nayak, A. K.; Winterlik, J.; Ksenofontov, V.; Adler, P.; Nicklas, M.; Felser, C.
Language:English
Date of Publication (YYYY-MM-DD):2013-05-20
Title of Journal:Applied Physics Letters
Volume:102
Issue / Number:20
Start Page:202402-1
End Page:202402-4
Sequence Number of Article:202402
Review Status:not specified
Audience:Not Specified
Abstract / Description:We report structural, magnetic, and Mossbauer studies of the Heusler compound Mn2FeGa. Theoretical calculations predict that a tetragonal phase in Mn2FeGa could be an interesting candidate for spin torque transfer applications due to the presence of perpendicular magnetic anisotropy. Experimentally, we found that Mn2FeGa crystallizes in a tetragonal structure after annealing at low temperatures (<= 400 degrees C), whereas, it becomes pseudocubic for higher annealing temperatures. The sample annealed at 400 degrees C shows a high Curie temperature of 650 K and a hard-magnetic behavior. We observed a nonsaturating and exchange-spring type of hysteresis loops, which indicates that the sample contains two different magnetic states. The Mossbauer measurements clearly support the structural and magnetic data. All these properties make the material a potential candidate for spintronic devices, especially in thin films with perpendicular magnetic anisotropy. (C) 2013 AIP Publishing LLC.
External Publication Status:published
Document Type:Article
Communicated by:Ina Werner
Affiliations:MPI für chemische Physik fester Stoffe
Identifiers:ISI:000320619300047 [ID No:1]
ISSN:0003-6951 [ID No:2]
DOI:10.1063/1.4807427
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