Effect of Gd addition on the structural and magnetic properties of L1(0)-FePt alloy thin films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F22%3APU147334" target="_blank" >RIV/00216305:26620/22:PU147334 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/22:00128349

Výsledek na webu

<a href="https://aip.scitation.org/doi/10.1063/5.0124652" target="_blank" >https://aip.scitation.org/doi/10.1063/5.0124652</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0124652" target="_blank" >10.1063/5.0124652</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Gd addition on the structural and magnetic properties of L1(0)-FePt alloy thin films

Popis výsledku v původním jazyce

The impact of Gd addition on the structural and magnetic properties of L1(0)-FePt alloy thin films, which were sputter-deposited on MgO (001) substrates at 800 degrees C, was investigated. A rapid deterioration of L1(0) 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 L1(0) chemical order, the perpendicular magnetic anisotropy (PMA) gets strongly reduced from about 3 down to 1 MJ/m(3) 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. Published under an exclusive license by AIP Publishing.

Název v anglickém jazyce

Effect of Gd addition on the structural and magnetic properties of L1(0)-FePt alloy thin films

Popis výsledku anglicky

The impact of Gd addition on the structural and magnetic properties of L1(0)-FePt alloy thin films, which were sputter-deposited on MgO (001) substrates at 800 degrees C, was investigated. A rapid deterioration of L1(0) 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 L1(0) chemical order, the perpendicular magnetic anisotropy (PMA) gets strongly reduced from about 3 down to 1 MJ/m(3) 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. Published under an exclusive license by AIP Publishing.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

<a href="/cs/project/LM2018110" target="_blank" >LM2018110: Výzkumná infrastruktura CzechNanoLab</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Applied Physics

ISSN

0021-8979

e-ISSN

1089-7550

Svazek periodika

132

Číslo periodika v rámci svazku

21

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

„“-„“

Kód UT WoS článku

000894312900001

EID výsledku v databázi Scopus

2-s2.0-85144105672