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- Title
Structure, magnetic and magnetocaloric properties of the Mn<sub>5</sub>Ge<sub>3</sub> thin film grown on Si(111).
- Authors
Tarasov, A. S.; Komogortsev, S. V.; Lukyanenko, A. V.; Yakovlev, I. A.; Tarasov, I. A.; Sukhachev, A. L.; Rautskii, M. V.; Solovyov, L. A.; Andryushchenko, T. A.; Bondarev, I. A.; Varnakov, S. N.; Volkov, N. V.
- Abstract
Mn5Ge3 is a ferromagnetic hexagonal crystal promising for spintronics and magnetocalorics. A systematic study and analysis of the magnetic properties of the Mn5Ge3 thin film grown on Si(111) were performed. The magnetic anisotropy of the film is determined by the shape anisotropy and the easy magnetization axis aligned along the c axis of the crystal. The uniaxial anisotropy constant Ku fully corresponds to that for a bulk single crystal, which indicates that c axis coincides with film normal. Mn5Ge3 film demonstrates high saturation magnetization MS = 900 emu/cm3 (900 kA/m) at T = 100 K and magnetocaloric effect ΔS = 3.16 ± 0.22 J kg−1 K−1 at 300 K and B = 1.5 T. ΔS is comparable to that for multicomponent or Gd rare earth films. Furthermore, a different anisotropy of the magnetocaloric effect compared to bulk Mn5Ge3 was found, which may be related to the anisotropy of the film shape and, possibly, to the domain structure. The results obtained are promising for the design and development of magnetocaloric, spintronic, and spin-caloritronic devices on a silicon platform.
- Subjects
THIN films; MAGNETIC properties; MAGNETIC anisotropy; MAGNETOCALORIC effects; MAGNETIC films; MANGANESE alloys; HEUSLER alloys; MAGNETIC entropy
- Publication
Journal of Materials Science, 2024, Vol 59, Issue 21, p9423
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-024-09755-6