Twinning in ferromagnetic Heusler Rh2MnSb epitaxial thin films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00640270" target="_blank" >RIV/68378271:_____/25:00640270 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/25:10509096

Výsledek na webu

<a href="https://doi.org/10.1016/j.jallcom.2025.184143" target="_blank" >https://doi.org/10.1016/j.jallcom.2025.184143</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2025.184143" target="_blank" >10.1016/j.jallcom.2025.184143</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Twinning in ferromagnetic Heusler Rh2MnSb epitaxial thin films

Popis výsledku v původním jazyce

Epitaxially grown full Heusler alloy Rh2MnSb thin films were prepared for the first time using DC magnetron sputtering. The films were deposited on MgO [001] substrates at deposition temperatures of 600◦C, 700◦C, and 800◦C. We report on the structural, morphological, optical, magneto-optical, and magnetic properties of these films, which had a nominal thickness of 200 nm. The film grown at 600◦C was nearly stoichiometric and exhibited the almost perfect L21 ordering typical of Heusler alloys. The single-phase Rh2MnSb film possessed a tetragonal structure with lattice parameters close to the bulk material. X-ray photoelectron spectroscopy revealed the metallic character of the contamination-free film. The tetragonal films displayed discernible regular twinning, where most twin domains oriented with their c-axis perpendicular to the surface, attributed to substrate constraint. Twin formation was investigated using atomic force microscopy, transmission electron microscopy, and X-ray diffraction. Magnetic measurements of the film prepared at 600◦C revealed a Curie temperature (TC) of approximately 220–275 K and a saturation magnetization of around 55 emu/g at 10 K, both values close to the bulk material’s. Magneto-optical Kerr effect measurements confirmed paramagnetic behavior at room temperature. These observed properties highlight the need for further studies of Rh2MnSb’s thin films, focusing on compositional and structural control.

Název v anglickém jazyce

Twinning in ferromagnetic Heusler Rh2MnSb epitaxial thin films

Popis výsledku anglicky

Epitaxially grown full Heusler alloy Rh2MnSb thin films were prepared for the first time using DC magnetron sputtering. The films were deposited on MgO [001] substrates at deposition temperatures of 600◦C, 700◦C, and 800◦C. We report on the structural, morphological, optical, magneto-optical, and magnetic properties of these films, which had a nominal thickness of 200 nm. The film grown at 600◦C was nearly stoichiometric and exhibited the almost perfect L21 ordering typical of Heusler alloys. The single-phase Rh2MnSb film possessed a tetragonal structure with lattice parameters close to the bulk material. X-ray photoelectron spectroscopy revealed the metallic character of the contamination-free film. The tetragonal films displayed discernible regular twinning, where most twin domains oriented with their c-axis perpendicular to the surface, attributed to substrate constraint. Twin formation was investigated using atomic force microscopy, transmission electron microscopy, and X-ray diffraction. Magnetic measurements of the film prepared at 600◦C revealed a Curie temperature (TC) of approximately 220–275 K and a saturation magnetization of around 55 emu/g at 10 K, both values close to the bulk material’s. Magneto-optical Kerr effect measurements confirmed paramagnetic behavior at room temperature. These observed properties highlight the need for further studies of Rh2MnSb’s thin films, focusing on compositional and structural control.

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

1873-4669

Svazek periodika

1042

Číslo periodika v rámci svazku

Oct

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

184143

Kód UT WoS článku

001589671700017

EID výsledku v databázi Scopus

2-s2.0-105017716062