Mn3Ge-based tetragonal Heusler alloy thin films with addition of Ni, Pt, and Pd

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F20%3APU137365" target="_blank" >RIV/00216305:26620/20:PU137365 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/20:00116926

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1088/1361-648X/ab5e16/meta" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-648X/ab5e16/meta</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-648X/ab5e16" target="_blank" >10.1088/1361-648X/ab5e16</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mn3Ge-based tetragonal Heusler alloy thin films with addition of Ni, Pt, and Pd

Popis výsledku v původním jazyce

We have investigated substitution effects of Ni, Pt, and Pd on phase formation and magnetic properties of D0(22)-Mn3Ge thin films. We prepared (Mn1-xMx)(3)Ge thin films (M = Ni, Pt, Pd) at 650 degrees C by magnetron sputtering on MgO(0 0 1) substrates with x varying from 0.03 to 0.6. For improving the film quality, a Cr(0 0 1) seed layer was employed. The D0(22) structure formed only for the lowest concentrations of Ni and Pt. Nevertheless, the doped samples showed strong perpendicular magnetic anisotropy up to x = 0.1. For high Ni concentrations, we observed the formation of a soft ferromagnetic MnxNiy Ge phase with a Curie temperature of about 230 K, while in samples with high Pt content the antiferromagnet L1(0)-MnPt phase is formed along with GePt. In contrast, for Pd substitution, the D0(22) structure is preserved up to x = 0.2, exhibiting strong perpendicular magnetic anisotropy and low saturation magnetization. Interestingly, the coexistence of the D0(22)-Mn3Ge and a novel D0(22)-(Mn1-xPdx)(3)Ge phase was revealed, which might have been facilitated by the low lattice mismatch to the Cr(0 0 1) seed layer. With further increase of the Pd concentration, the D0(22) structure vanishes and mainly the GePd and GePd2 phases are present. Overall within the investigated sample series, the saturation magnetization strongly decreases with increasing dopant concentration, offering the possibility to adjust the saturation magnetization in the range between 20 and 100 emu cm(-3), while still preserving strong perpendicular magnetic anisotropy, which is important for spintronic applications.

Název v anglickém jazyce

Mn3Ge-based tetragonal Heusler alloy thin films with addition of Ni, Pt, and Pd

Popis výsledku anglicky

We have investigated substitution effects of Ni, Pt, and Pd on phase formation and magnetic properties of D0(22)-Mn3Ge thin films. We prepared (Mn1-xMx)(3)Ge thin films (M = Ni, Pt, Pd) at 650 degrees C by magnetron sputtering on MgO(0 0 1) substrates with x varying from 0.03 to 0.6. For improving the film quality, a Cr(0 0 1) seed layer was employed. The D0(22) structure formed only for the lowest concentrations of Ni and Pt. Nevertheless, the doped samples showed strong perpendicular magnetic anisotropy up to x = 0.1. For high Ni concentrations, we observed the formation of a soft ferromagnetic MnxNiy Ge phase with a Curie temperature of about 230 K, while in samples with high Pt content the antiferromagnet L1(0)-MnPt phase is formed along with GePt. In contrast, for Pd substitution, the D0(22) structure is preserved up to x = 0.2, exhibiting strong perpendicular magnetic anisotropy and low saturation magnetization. Interestingly, the coexistence of the D0(22)-Mn3Ge and a novel D0(22)-(Mn1-xPdx)(3)Ge phase was revealed, which might have been facilitated by the low lattice mismatch to the Cr(0 0 1) seed layer. With further increase of the Pd concentration, the D0(22) structure vanishes and mainly the GePd and GePd2 phases are present. Overall within the investigated sample series, the saturation magnetization strongly decreases with increasing dopant concentration, offering the possibility to adjust the saturation magnetization in the range between 20 and 100 emu cm(-3), while still preserving strong perpendicular magnetic anisotropy, which is important for spintronic applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of Physics Condensed Matter

ISSN

0953-8984

e-ISSN

1361-648X

Svazek periodika

32

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

„145801-1“-„145801-11“

Kód UT WoS článku

000507894100001

EID výsledku v databázi Scopus

2-s2.0-85082124171