Diop, L. V. B. ; Kuz'min, M. D. ; Skokov, K. P. ; Karpenkov, D. Yu. ; Gutfleisch, O. (2016)
Magnetic anisotropy ofSm2Fe17single crystals.
In: Physical Review B, 94 (14)
doi: 10.1103/PhysRevB.94.144413
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The previously accepted notion that the spontaneous magnetization of Sm2Fe17 lies in the basal plane of the crystal is true only approximately, and then only around room temperature. At low temperatures the magnetization, whose orientation is not fixed by the symmetry, is found to deviate from the basal plane by as much as 10 degrees. The threefold symmetry axis is a hard direction; to magnetize the crystal in this direction, a magnetic field of about 9 T is required. The hard-axis magnetization arrives at saturation discontinuously, by way of a first-order phase transition. The behavior is a general one for trigonal ferromagnets where K-1 < 0 and the leading trigonal anisotropy constant is nonzero, K-2' not equal 0. Although of universal occurrence, the first-order transition is only visible at low temperatures, where it is accompanied by a magnetization anomaly of sufficient size.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2016 |
| Autor(en): | Diop, L. V. B. ; Kuz'min, M. D. ; Skokov, K. P. ; Karpenkov, D. Yu. ; Gutfleisch, O. |
| Art des Eintrags: | Bibliographie |
| Titel: | Magnetic anisotropy ofSm2Fe17single crystals |
| Sprache: | Englisch |
| Publikationsjahr: | 12 Oktober 2016 |
| Verlag: | American Physical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review B |
| Jahrgang/Volume einer Zeitschrift: | 94 |
| (Heft-)Nummer: | 14 |
| DOI: | 10.1103/PhysRevB.94.144413 |
| Kurzbeschreibung (Abstract): | The previously accepted notion that the spontaneous magnetization of Sm2Fe17 lies in the basal plane of the crystal is true only approximately, and then only around room temperature. At low temperatures the magnetization, whose orientation is not fixed by the symmetry, is found to deviate from the basal plane by as much as 10 degrees. The threefold symmetry axis is a hard direction; to magnetize the crystal in this direction, a magnetic field of about 9 T is required. The hard-axis magnetization arrives at saturation discontinuously, by way of a first-order phase transition. The behavior is a general one for trigonal ferromagnets where K-1 < 0 and the leading trigonal anisotropy constant is nonzero, K-2' not equal 0. Although of universal occurrence, the first-order transition is only visible at low temperatures, where it is accompanied by a magnetization anomaly of sufficient size. |
| 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: | 18 Nov 2016 10:07 |
| Letzte Änderung: | 18 Nov 2016 10:07 |
| PPN: | |
| Sponsoren: | The financial support by the German federal state of Hessen through its excellence programme LOEWE "RESPONSE" is acknowledged. |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum