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Thin film phase diagram of iron nitrides grown by molecular beam epitaxy

Gölden, D. ; Hildebrandt, E. ; Alff, L. (2017)
Thin film phase diagram of iron nitrides grown by molecular beam epitaxy.
In: Journal of Magnetism and Magnetic Materials, 422
doi: 10.1016/j.jmmm.2016.07.074
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

A low-temperature thin film phase diagram of the iron nitride system is established for the case of thin films grown by molecular beam epitaxy and nitrided by a nitrogen radical source. A fine-tuning of the nitridation conditions allows for growth of α′α′-Fe8Nx with increasing c/ac/a-ratio and magnetic anisotropy with increasing x until almost phase pure α′α′-Fe8N1 thin films are obtained. A further increase of nitrogen content below the phase decomposition temperature of α′α′-Fe8N (180 °C) leads to a mixture of several phases that is also affected by the choice of substrate material and symmetry. At higher temperatures (350 °C), phase pure γ′γ′-Fe4N is the most stable phase.

Typ des Eintrags: Artikel
Erschienen: 2017
Autor(en): Gölden, D. ; Hildebrandt, E. ; Alff, L.
Art des Eintrags: Bibliographie
Titel: Thin film phase diagram of iron nitrides grown by molecular beam epitaxy
Sprache: Englisch
Publikationsjahr: 15 Januar 2017
Verlag: Elsevier Science Publishing
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of Magnetism and Magnetic Materials
Jahrgang/Volume einer Zeitschrift: 422
DOI: 10.1016/j.jmmm.2016.07.074
URL / URN: https://doi.org/10.1016/j.jmmm.2016.07.074
Kurzbeschreibung (Abstract):

A low-temperature thin film phase diagram of the iron nitride system is established for the case of thin films grown by molecular beam epitaxy and nitrided by a nitrogen radical source. A fine-tuning of the nitridation conditions allows for growth of α′α′-Fe8Nx with increasing c/ac/a-ratio and magnetic anisotropy with increasing x until almost phase pure α′α′-Fe8N1 thin films are obtained. A further increase of nitrogen content below the phase decomposition temperature of α′α′-Fe8N (180 °C) leads to a mixture of several phases that is also affected by the choice of substrate material and symmetry. At higher temperatures (350 °C), phase pure γ′γ′-Fe4N is the most stable phase.

Freie Schlagworte: Iron Nitride, Molecular beam epitaxy, Thin films, Phase diagram, Nitrides, FeN
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten
Hinterlegungsdatum: 19 Mai 2017 09:06
Letzte Änderung: 31 Jan 2019 07:51
PPN:
Sponsoren: We thank the German federal state of Hessen through its excellence program LOEWE RESPONSE for financial support.
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