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  Exchange bias up to room temperature in antiferromagnetic hexagonal Mn3Ge

Qian, J. F., Nayak, A. K., Kreiner, G., Schnelle, W., & Felser, C. (2014). Exchange bias up to room temperature in antiferromagnetic hexagonal Mn3Ge. Journal of Physics D: Applied Physics, 47(30): 305001, pp. 1-5. doi:10.1088/0022-3727/47/30/305001.

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 Urheber:
Qian, J. F.1, Autor           
Nayak, A. K.2, Autor           
Kreiner, G.3, Autor           
Schnelle, W.4, Autor           
Felser, C.5, Autor           
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Ajaya Nayak, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863426              
3Guido Kreiner, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863433              
4Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
5Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Zusammenfassung: Mn3.04Ge0.96 has a hexagonal crystal structure, which can be stabilized by high-temperature annealing, and shows antiferromagnetic order with a small ferromagnetic component of less than 0.1 mu(B) and a coercivity of 0.45 T. In the ordered phase, magnetization curves M(H) exhibit an exchange bias of 62 mT at T = 2K after field cooling, which is observable up to room temperature. The exchange anisotropy is suggested to originate from the exchange interaction between the host of triangular-antiferromagnetic Mn3Ge units and embedded ferrimagnetic-like clusters. Such clusters develop when excess Mn atoms occupy empty Ge sites in the original triangular-antiferromagnetic structure of Mn3Ge.

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Sprache(n): eng - English
 Datum: 20142014-07-01
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000338861800003
DOI: 10.1088/0022-3727/47/30/305001
 Art des Abschluß: -

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Titel: Journal of Physics D: Applied Physics
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Bristol : IOP Publishing
Seiten: - Band / Heft: 47 (30) Artikelnummer: 305001 Start- / Endseite: 1 - 5 Identifikator: ISSN: 0022-3727
CoNE: https://pure.mpg.de/cone/journals/resource/0022-3727