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  Exchange-spring like magnetic behavior of the tetragonal Heusler compound Mn2FeGa as a candidate for spin-transfer torque

Gasi, T., Nayak, A. K., Winterlik, J., Ksenofontov, V., Adler, P., Nicklas, M., et al. (2013). Exchange-spring like magnetic behavior of the tetragonal Heusler compound Mn2FeGa as a candidate for spin-transfer torque. Applied Physics Letters, 102(20): 202402, pp. 202402-1-202402-4. doi:10.1063/1.4807427.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1EC0-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1EC1-E
Genre: Journal Article

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Gasi, T., Author
Nayak, A. K.1, Author              
Winterlik, J., Author
Ksenofontov, V., Author
Adler, P.2, Author              
Nicklas, M.3, Author              
Felser, C.4, Author              
Affiliations:
1Ajaya Nayak, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863426              
2Peter Adler, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863435              
3Michael Nicklas, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863472              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: 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.

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Language(s): eng - English
 Dates: 2013-05-20
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 668937
ISI: 000320619300047
DOI: 10.1063/1.4807427
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Title: Applied Physics Letters
Source Genre: Journal
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Pages: - Volume / Issue: 102 (20) Sequence Number: 202402 Start / End Page: 202402-1 - 202402-4 Identifier: ISSN: 0003-6951