Experimental and Theoretical Investigation of Polycrystalline Hexagonal Mn2FeSn compound

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F25%3A10258462" target="_blank" >RIV/61989100:27240/25:10258462 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/25:10508072 RIV/61989100:27360/25:10258462 RIV/61989100:27740/25:10258462

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2590123025034085" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2590123025034085</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.rineng.2025.107353" target="_blank" >10.1016/j.rineng.2025.107353</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental and Theoretical Investigation of Polycrystalline Hexagonal Mn2FeSn compound

Popis výsledku v původním jazyce

The recently discovered hexagonal structure of the Mn₂FeSn alloy significantly influences its physical properties, making them markedly different from those of the cubic Mn₂FeSi and Mn₂FeAl systems. This study focuses on both theoretical and experimental investigations of bulk Mn₂FeSn, examining the relationship between its structure, open-volume defects, and mechanical and magnetic properties. Induction-melted Mn₂FeSn ingots, homogenized at 773 K for 100 hours under an argon atmosphere and slowly cooled to room temperature, were selected for analysis. The stoichiometry of the prepared alloys was independently verified using surface-sensitive energy-dispersive X-ray spectroscopy and bulk-sensitive neutron activation analysis. All samples, in both as-cast and annealed states, exhibited a three-phase composition dominated by a Ni₃Sn-type hexagonal structure. Various experimental techniques – including positron annihilation spectroscopy, hardness and instrumented indentation testing, and low-temperature magnetic measurements – were employed to characterize the physical properties of the samples. These results were further supported by density functional theory (DFT) calculations. The annealed Mn₂FeSn sample revealed a Mn vacancy concentration of approximately 70 ppm, a Young’s modulus of about 100 GPa, and a pronounced exchange bias effect, with a maximum value of -340 kA/m at 5 K.

Název v anglickém jazyce

Experimental and Theoretical Investigation of Polycrystalline Hexagonal Mn2FeSn compound

Popis výsledku anglicky

The recently discovered hexagonal structure of the Mn₂FeSn alloy significantly influences its physical properties, making them markedly different from those of the cubic Mn₂FeSi and Mn₂FeAl systems. This study focuses on both theoretical and experimental investigations of bulk Mn₂FeSn, examining the relationship between its structure, open-volume defects, and mechanical and magnetic properties. Induction-melted Mn₂FeSn ingots, homogenized at 773 K for 100 hours under an argon atmosphere and slowly cooled to room temperature, were selected for analysis. The stoichiometry of the prepared alloys was independently verified using surface-sensitive energy-dispersive X-ray spectroscopy and bulk-sensitive neutron activation analysis. All samples, in both as-cast and annealed states, exhibited a three-phase composition dominated by a Ni₃Sn-type hexagonal structure. Various experimental techniques – including positron annihilation spectroscopy, hardness and instrumented indentation testing, and low-temperature magnetic measurements – were employed to characterize the physical properties of the samples. These results were further supported by density functional theory (DFT) calculations. The annealed Mn₂FeSn sample revealed a Mn vacancy concentration of approximately 70 ppm, a Young’s modulus of about 100 GPa, and a pronounced exchange bias effect, with a maximum value of -340 kA/m at 5 K.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

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

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Results in Engineering

ISSN

2590-1230

e-ISSN

2590-1230

Svazek periodika

28

Číslo periodika v rámci svazku

December 2025

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

"107353(1)"-"107353(10)"

Kód UT WoS článku

001586804600012

EID výsledku v databázi Scopus

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