Effect of Gd addition on the structural and magnetic properties
of L10-FePt alloy thin films

J 2022

Effect of Gd addition on the structural and magnetic properties of L10-FePt alloy thin films

SCHMIDT, Nataliia Y., Sukhrob ABDULAZHANOV, Jan MICHALIČKA, Julian HINTERMAYR, Ondřej MAN et. al.

Základní údaje

Originální název

Effect of Gd addition on the structural and magnetic properties of L10-FePt alloy thin films

Autoři

SCHMIDT, Nataliia Y., Sukhrob ABDULAZHANOV, Jan MICHALIČKA, Julian HINTERMAYR (garant), Ondřej MAN, Ondřej CAHA (203 Česká republika, domácí), Michal URBÁNEK a Manfred ALBRECHT

Vydání

Journal of Applied Physics, AIP Publishing, 2022, 0021-8979

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10300 1.3 Physical sciences

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.200

Kód RIV

RIV/00216224:14310/22:00128349

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1063/5.0124652

UT WoS

000894312900001

Klíčová slova anglicky

anisotropy; fept films

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 30. 1. 2023 09:19, Mgr. Marie Šípková, DiS.

Anotace

V originále

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.

Citovat

SCHMIDT, Nataliia Y., Sukhrob ABDULAZHANOV, Jan MICHALIČKA, Julian HINTERMAYR, Ondřej MAN, Ondřej CAHA, Michal URBÁNEK a Manfred ALBRECHT. Effect of Gd addition on the structural and magnetic properties of L10-FePt alloy thin films. Journal of Applied Physics. AIP Publishing, 2022, roč. 132, č. 21, s. 1-9. ISSN 0021-8979. Dostupné z: https://dx.doi.org/10.1063/5.0124652.

@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 a 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, roč.~132, č.~21, s.~1-9. ISSN~0021-8979. Dostupné z: https://dx.doi.org/10.1063/5.0124652.

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