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CeCo 5 thin films with perpendicular anisotropy grown by molecular beam epitaxy

Sharma, S. and Hildebrandt, E. and Major, M. and Komissinskiy, P. and Radulov, I. and Alff, L. (2018):
CeCo 5 thin films with perpendicular anisotropy grown by molecular beam epitaxy.
In: Journal of Magnetism and Magnetic Materials, pp. 80-85, 452, ISSN 03048853, DOI: 10.1016/j.jmmm.2017.12.042, [Online-Edition: https://doi.org/10.1016/j.jmmm.2017.12.042],
[Article]

Abstract

Buffer-free, highly textured (0 0 1) oriented CeCo5 thin films showing perpendicular magnetic anisotropy were synthesized on (0 0 1) Al2O3 substrates by molecular beam epitaxy. Ce exists in a mixture of Ce3+Ce3+ and Ce4+Ce4+ valence states as shown by X-ray photoelectron spectroscopy. The first anisotropy constant, K1, as measured by torque magnetometry was 0.82 MJ/m3View the MathML source(8.2×106erg/cm3). A maximum coercivity of 5.16 kOe with a negative temperature coefficient of −0.304%K−1 and a magnetization of 527.30 emu/cm3 was measured perpendicular to the film plane at 5 K. In addition, a large anisotropy of the magnetic moment of 15.5% was observed. These magnetic parameters make CeCo5 a potential candidate material for spintronic and magnetic recording applications.

Item Type: Article
Erschienen: 2018
Creators: Sharma, S. and Hildebrandt, E. and Major, M. and Komissinskiy, P. and Radulov, I. and Alff, L.
Title: CeCo 5 thin films with perpendicular anisotropy grown by molecular beam epitaxy
Language: English
Abstract:

Buffer-free, highly textured (0 0 1) oriented CeCo5 thin films showing perpendicular magnetic anisotropy were synthesized on (0 0 1) Al2O3 substrates by molecular beam epitaxy. Ce exists in a mixture of Ce3+Ce3+ and Ce4+Ce4+ valence states as shown by X-ray photoelectron spectroscopy. The first anisotropy constant, K1, as measured by torque magnetometry was 0.82 MJ/m3View the MathML source(8.2×106erg/cm3). A maximum coercivity of 5.16 kOe with a negative temperature coefficient of −0.304%K−1 and a magnetization of 527.30 emu/cm3 was measured perpendicular to the film plane at 5 K. In addition, a large anisotropy of the magnetic moment of 15.5% was observed. These magnetic parameters make CeCo5 a potential candidate material for spintronic and magnetic recording applications.

Journal or Publication Title: Journal of Magnetism and Magnetic Materials
Volume: 452
Uncontrolled Keywords: CeCo5, MBE, Thin film, Perpendicular anisotropy
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Advanced Thin Film Technology
11 Department of Materials and Earth Sciences > Material Science > Functional Materials
Date Deposited: 27 Dec 2017 09:05
DOI: 10.1016/j.jmmm.2017.12.042
Official URL: https://doi.org/10.1016/j.jmmm.2017.12.042
Funders: This work was supported by the Deutscher Akademischer Austauschdienst (DAAD) and the German federal state of Hessen through its excellence program LOEWE RESPONSE.
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