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

Result code in 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>

Alternative codes found

RIV/00216224:14310/20:00116926

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

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

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2020

Confidentiality

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

Name of the periodical

Journal of Physics Condensed Matter

ISSN

0953-8984

e-ISSN

1361-648X

Volume of the periodical

32

Issue of the periodical within the volume

14

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

„145801-1“-„145801-11“

UT code for WoS article

000507894100001

EID of the result in the Scopus database

2-s2.0-85082124171