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@article{2250903,
author = {Schmidt, Nataliia Y. and Abdulazhanov, Sukhrob and Michalička, Jan and Hintermayr, Julian and Man, Ondřej and Caha, Ondřej and Urbánek, Michal and Albrecht, Manfred},
article_number = {21},
doi = {http://dx.doi.org/10.1063/5.0124652},
keywords = {anisotropy; fept films},
language = {eng},
issn = {0021-8979},
journal = {Journal of Applied Physics},
title = {Effect of Gd addition on the structural and magnetic properties of L10-FePt alloy thin films},
url = {https://doi.org/10.1063/5.0124652},
volume = {132},
year = {2022}
}
TY - JOUR
ID - 2250903
AU - Schmidt, Nataliia Y. - Abdulazhanov, Sukhrob - Michalička, Jan - Hintermayr, Julian - Man, Ondřej - Caha, Ondřej - Urbánek, Michal - Albrecht, Manfred
PY - 2022
TI - Effect of Gd addition on the structural and magnetic properties of L10-FePt alloy thin films
JF - Journal of Applied Physics
VL - 132
IS - 21
SP - 1-9
EP - 1-9
PB - AIP Publishing
SN - 00218979
KW - anisotropy
KW - fept films
UR - https://doi.org/10.1063/5.0124652
N2 - The impact of Gd addition on the structural and magnetic properties of 𝐿10-FePt alloy thin films, which were sputter-deposited on MgO(001) substrates at 800∘C, was investigated. A rapid deterioration of 𝐿10 chemical ordering along with a strong amorphization effect is observed with addition of Gd. At more than 20 at. % Gd, additional crystalline phases occur. Due to the diminishing 𝐿10 chemical order, the perpendicular magnetic anisotropy (PMA) gets strongly reduced from about 3 down to 1 MJ/m3 with addition of 14 at. % Gd. For higher Gd concentrations, the easy axis of magnetization turns fully in-plane due to dominating magnetic shape anisotropy. Furthermore, the saturation magnetization gets reduced with Gd addition due to the antiferromagnetic coupling between the Fe and Gd magnetic moments. Also, the Curie temperature can be lowered. Interestingly, with addition of Gd, a change in film morphology takes place, changing from an isolated island structure to a more continuous film morphology, which is of particular interest for samples with low Gd concentration as these films exhibit still strong PMA but rather low coercive fields.
ER -
SCHMIDT, Nataliia Y., Sukhrob ABDULAZHANOV, Jan MICHALIČKA, Julian HINTERMAYR, Ondřej MAN, Ondřej CAHA, Michal URBÁNEK and Manfred ALBRECHT. Effect of Gd addition on the structural and magnetic properties of L10-FePt alloy thin films. \textit{Journal of Applied Physics}. AIP Publishing, 2022, vol.~132, No~21, p.~1-9. ISSN~0021-8979. Available from: https://dx.doi.org/10.1063/5.0124652.
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