Sharma, Shalini ; Radulov, Iliya ; Marton, Major ; Alff, Lambert (2018)
Evolution of Magnetic Anisotropy With Sm Contents in Sm-Co Thin Films.
In: IEEE Transactions on Magnetics, (99)
doi: 10.1109/TMAG.2018.2837006
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
In this paper, the evolution of magnetic anisotropy as a function of Sm contents in buffer-free Sm-Co thin films grown by molecular beam epitaxy is investigated. From the soft magnetic Sm₂Co₁₇ phase, the anisotropy evolves to the hard magnetic SmCo₅ phase with a distinct perpendicular anisotropy and a maximum magnetic anisotropy energy of 1.67 MJ/m³ as measured by torque magnetometry at 300 K. For SmCo₅, a saturation magnetization of 845 emu/cm³, close to the bulk single crystal value is achieved, while a squareness ratio close to unity is measured in the hysteresis curve perpendicular to the film plane. Previously grown YCo₅ and CeCo₅ thin films with perpendicular anisotropy show a considerably reduced uniaxial anisotropy as well as a reduced squareness ratio as compared to SmCo₅. These results demonstrate that the magnetic parameters of rare earth-cobalt thin films can be adapted according to the requirements of applications such as magnetic recording.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Sharma, Shalini ; Radulov, Iliya ; Marton, Major ; Alff, Lambert |
| Art des Eintrags: | Bibliographie |
| Titel: | Evolution of Magnetic Anisotropy With Sm Contents in Sm-Co Thin Films |
| Sprache: | Englisch |
| Publikationsjahr: | 12 Juni 2018 |
| Verlag: | IEEE Publications |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | IEEE Transactions on Magnetics |
| (Heft-)Nummer: | 99 |
| DOI: | 10.1109/TMAG.2018.2837006 |
| URL / URN: | https://doi.org/10.1109/TMAG.2018.2837006 |
| Kurzbeschreibung (Abstract): | In this paper, the evolution of magnetic anisotropy as a function of Sm contents in buffer-free Sm-Co thin films grown by molecular beam epitaxy is investigated. From the soft magnetic Sm₂Co₁₇ phase, the anisotropy evolves to the hard magnetic SmCo₅ phase with a distinct perpendicular anisotropy and a maximum magnetic anisotropy energy of 1.67 MJ/m³ as measured by torque magnetometry at 300 K. For SmCo₅, a saturation magnetization of 845 emu/cm³, close to the bulk single crystal value is achieved, while a squareness ratio close to unity is measured in the hysteresis curve perpendicular to the film plane. Previously grown YCo₅ and CeCo₅ thin films with perpendicular anisotropy show a considerably reduced uniaxial anisotropy as well as a reduced squareness ratio as compared to SmCo₅. These results demonstrate that the magnetic parameters of rare earth-cobalt thin films can be adapted according to the requirements of applications such as magnetic recording. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Funktionale Materialien |
| Hinterlegungsdatum: | 26 Jun 2018 12:27 |
| Letzte Änderung: | 28 Mai 2019 12:13 |
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