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  Isotropic, high coercive field in melt-spun tetragonal Heusler Mn3Ge

Kalache, A., Kreiner, G., Ouardi, S., Selle, S., Patzig, C., Hoeche, T., et al. (2016). Isotropic, high coercive field in melt-spun tetragonal Heusler Mn3Ge. APL Materials, 4(8): 086113, pp. 1-8. doi:10.1063/1.4961660.

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Kalache, Adel1, Autor           
Kreiner, G.2, Autor           
Ouardi, Siham3, Autor           
Selle, Susanne4, Autor
Patzig, Christian4, Autor
Hoeche, Thomas4, Autor
Felser, Claudia5, Autor           
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Guido Kreiner, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863433              
3Siham Ouardi, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863439              
4External Organizations, ou_persistent22              
5Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Zusammenfassung: Nanostructured Mn3Ge ribbons with a composition ranging from 77 to 74 at.% Mn were prepared using induction melting, melt-spinning, and subsequent heat treatment. The hard magnetic properties of the ribbons originate from the highly anisotropic tetragonal D0(22) structure of Mn3Ge. Depending on the composition and the amount of ferrimagnetic Mn5Ge2 as a secondary phase, a coercivity of up to mu H-0(C) = 2.62 T was obtained for the Mn3Ge ribbons. Microstructure investigations by transmission electron microscopy confirmed the formation of the secondary phase. All samples show isotropic coercive fields, i.e., independent of the direction of the applied magnetic field in contrast to already known epitaxial thin films. The Curie temperature was found to be higher than 800 K, which is the temperature of the phase transition from the tetragonal D0(22) structure to the hexagonal D0(19) structure. (C) 2016 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license.

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Sprache(n): eng - English
 Datum: 2016-08-232016-08-23
 Publikationsstatus: Erschienen
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 Identifikatoren: ISI: 000383910000014
DOI: 10.1063/1.4961660
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Titel: APL Materials
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: AIP Scitation
Seiten: - Band / Heft: 4 (8) Artikelnummer: 086113 Start- / Endseite: 1 - 8 Identifikator: CoNE: https://pure.mpg.de/cone/journals/resource/2166-532X