Thielsch, J. ; Stopfel, H. ; Wolff, U. ; Neu, V. ; Woodcock, T. G. ; Güth, K. ; Schultz, L. ; Gutfleisch, O. (2012)
In situ magnetic force microscope studies of magnetization reversal of interaction domains in hot deformed Nd-Fe-B magnets.
In: Journal of Applied Physics, 111 (10)
doi: 10.1063/1.4712635
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A hot-deformed Nd-Fe-B sample has been chosen for the investigation of interaction domains by means of magnetic force microscopy. During the imaging process, a magnetic field of up to 6 T was applied in situ along the easy axis of magnetization. The thermally demagnetized state presents a regular pattern of interaction domains with an average width of about 1 μm but with a much larger length scale. Starting from the thermally demagnetized state, magnetization along the initial magnetization curve occurs via sequential switching of neighboring grain columns at the peripheries of the interaction domains. Demagnetization of a saturated sample takes place through the nucleation and expansion of a patchy domain pattern with a much larger extension and a substructure in the lateral range of the underlying grain size. Reversal processes under an applied magnetic field also take place at the borders of the domains.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2012 |
| Autor(en): | Thielsch, J. ; Stopfel, H. ; Wolff, U. ; Neu, V. ; Woodcock, T. G. ; Güth, K. ; Schultz, L. ; Gutfleisch, O. |
| Art des Eintrags: | Bibliographie |
| Titel: | In situ magnetic force microscope studies of magnetization reversal of interaction domains in hot deformed Nd-Fe-B magnets |
| Sprache: | Englisch |
| Publikationsjahr: | 2012 |
| Verlag: | American Institute of Physics |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Applied Physics |
| Jahrgang/Volume einer Zeitschrift: | 111 |
| (Heft-)Nummer: | 10 |
| DOI: | 10.1063/1.4712635 |
| Kurzbeschreibung (Abstract): | A hot-deformed Nd-Fe-B sample has been chosen for the investigation of interaction domains by means of magnetic force microscopy. During the imaging process, a magnetic field of up to 6 T was applied in situ along the easy axis of magnetization. The thermally demagnetized state presents a regular pattern of interaction domains with an average width of about 1 μm but with a much larger length scale. Starting from the thermally demagnetized state, magnetization along the initial magnetization curve occurs via sequential switching of neighboring grain columns at the peripheries of the interaction domains. Demagnetization of a saturated sample takes place through the nucleation and expansion of a patchy domain pattern with a much larger extension and a substructure in the lateral range of the underlying grain size. Reversal processes under an applied magnetic field also take place at the borders of the domains. |
| Freie Schlagworte: | boron alloys, cobalt alloys, demagnetisation, gallium alloys, grain size, hot pressing, iron alloys, magnetic domains, magnetic force microscopy, magnetic switching, magnetisation reversal, nanofabrication, nanomagnetics, nanostructured materials, neodymium alloys, nucleation, thermal expansion |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Funktionale Materialien |
| Hinterlegungsdatum: | 22 Apr 2013 08:21 |
| Letzte Änderung: | 26 Sep 2018 12:51 |
| PPN: | |
| Sponsoren: | The authors are grateful to the Hans L. Merkle-Stiftung (Stifterverband für die deutsche Wissenschaft) for financial support. |
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