Inverse-Heusler Mn2FeSi alloy prepared by powder metallurgy route

0564112 - ÚFM 2025 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Životský, O. - Skotnicová, K. - Čegan, T. - Juřica, J. - Gembalová, L. - Zažímal, František - Jirásková, Yvonna - Szurman, I.
Inverse-Heusler Mn2FeSi alloy prepared by powder metallurgy route.
METAL 2022. Ostrava: TANGER Ltd., 2022, s. 645-650. ISBN 978-80-88365-06-8. ISSN 2694-9296.
[METAL 2022 - International Conference on Metallurgy and Materials /31./. Brno (CZ), 18.05.2022-19.05.2022]
Institucionální podpora: RVO:68081723
Klíčová slova: Heusler alloy, powder, ball milling, microstructure, magnetism * powder * ball milling * microstructure * magnetism
Obor OECD: Materials engineering
https://www.confer.cz/metal/2022/4434-inverse-heusler-mn2fesi-alloy-prepared-by-powder-metallurgy-route

The Mn2FeSi inverse-Heusler alloy was prepared by solid-state reactions using ball milling for 168 h in n hexane. Two milling procedures varying in the ball-to-powder ratio, namely 4:1 and 10:1, were used to follow
their influence on alloy formation and its physical properties. In both cases no Heusler structure was obtained
directly and therefore the subsequent annealing at 1223 K for 1.5 h in pure Ar was applied. The energy dispersive X-ray analysis resulted in the chemical composition about 49.0-49.9 at% Mn, 25.3-25.6 at% Fe, and
24.8-25.4 at% Si, in a good agreement with nominal one. X-ray diffraction of both powders confirmed inverse Heusler XA structure of lattice parameters 0.5675 nm (4:1) and 0.5677 nm (10:1), only slightly higher as
theoretically obtained 0.560 nm. The presence of minor oxidation phases was also observed in the particle
structure of powders. Magnetic properties were analysed at low and room temperatures. Both alloys exhibit
paramagnetic behaviour at room temperature confirmed by transmission Mössbauer spectroscopy
measurements. Different magnetic behaviour of alloys is observed below 65 K.
Trvalý link: https://hdl.handle.net/11104/0352974