Ener, Semih ; Kroder, Johannes ; Skokov, Konstantin P. ; Gutfleisch, Oliver (2016)
The search for room temperature tetragonal phases of Fe-Mn-Ga: A reactive crucible melting approach.
In: Journal of Alloys and Compounds, 683
doi: 10.1016/j.jallcom.2016.05.069
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
For the experimental search of new permanent magnet materials a bulk high-throughput method is needed. One possible method for bulk high-throughput screening is the simple and effective reactive crucible melting technique. In this work, we successfully applied reactive crucible melting to the Ni-Mn-Ga and Fe-Mn-Ga ternary Heusler systems. Energy dispersive X-ray spectroscopy was used for elemental analysis of phases formed in the crucibles which allowed us to construct parts of the room-temperature phase diagrams of Ni-Mn-Ga and Fe-Mn-Ga systems. By means of magneto-optical Kerr microscopy the phases with stripe domains - an essential feature of an uniaxial magnetic anisotropy- were identified and synthesized by conventional metallurgy. The structural/microstructural properties of the synthesized individual sample were investigated in addition to the magnetic properties. The most interesting hard magnetic material in Fe-Mn-Ga family is Mn38.5Fe32.5Ga29 with the remanent magnetization of 20 Am2kg−1 and a coercivity of 0.33 T at room temperature.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2016 |
| Autor(en): | Ener, Semih ; Kroder, Johannes ; Skokov, Konstantin P. ; Gutfleisch, Oliver |
| Art des Eintrags: | Bibliographie |
| Titel: | The search for room temperature tetragonal phases of Fe-Mn-Ga: A reactive crucible melting approach |
| Sprache: | Englisch |
| Publikationsjahr: | 25 Oktober 2016 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Alloys and Compounds |
| Jahrgang/Volume einer Zeitschrift: | 683 |
| DOI: | 10.1016/j.jallcom.2016.05.069 |
| Kurzbeschreibung (Abstract): | For the experimental search of new permanent magnet materials a bulk high-throughput method is needed. One possible method for bulk high-throughput screening is the simple and effective reactive crucible melting technique. In this work, we successfully applied reactive crucible melting to the Ni-Mn-Ga and Fe-Mn-Ga ternary Heusler systems. Energy dispersive X-ray spectroscopy was used for elemental analysis of phases formed in the crucibles which allowed us to construct parts of the room-temperature phase diagrams of Ni-Mn-Ga and Fe-Mn-Ga systems. By means of magneto-optical Kerr microscopy the phases with stripe domains - an essential feature of an uniaxial magnetic anisotropy- were identified and synthesized by conventional metallurgy. The structural/microstructural properties of the synthesized individual sample were investigated in addition to the magnetic properties. The most interesting hard magnetic material in Fe-Mn-Ga family is Mn38.5Fe32.5Ga29 with the remanent magnetization of 20 Am2kg−1 and a coercivity of 0.33 T at room temperature. |
| Freie Schlagworte: | Reactive crucible melting, Fe-Mn-Ga, Heusler alloys, Hard magnetic phases |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Funktionale Materialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 08 Jul 2016 11:13 |
| Letzte Änderung: | 08 Jul 2016 11:16 |
| PPN: | |
| Sponsoren: | The authors thank the LOEWE project RESPONSE funded by the Ministry of Higher Education, Research and the Arts (HMWK) of the Hessen state. |
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