Structural and Magnetic Properties of Inverse-Heusler Mn2FeSi Alloy Powder Prepared by Ball Milling

0554684 - ÚFM 2023 RIV CH eng J - Článek v odborném periodiku
Životský, O. - Skotnicová, K. - Čegan, T. - Juřica, J. - Gembalová, L. - Zažímal, František - Szurman, I.
Structural and Magnetic Properties of Inverse-Heusler Mn2FeSi Alloy Powder Prepared by Ball Milling.
Materials. Roč. 15, č. 3 (2022), č. článku 697. E-ISSN 1996-1944
Institucionální podpora: RVO:68081723
Klíčová slova: transport * inverse-Heusler alloys * ball milling * powders * microstructure * Neel temperature * magnetic transitions
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 3.4, rok: 2022
Způsob publikování: Open access
https://www.mdpi.com/1996-1944/15/3/697

Ternary Mn2FeSi alloy was synthesized from pure elemental powders by mechanical alloying, using a high-energy planetary ball mill. The formation of an inverse-Heusler phase after 168 h of milling and subsequent annealing at 1173 K for 1.5 h was confirmed by X-ray diffraction. The diffractogram analysis yielded XA structure and the lattice parameter 0.5677 nm in a good agreement with the theoretically obtained value of 0.560 nm. The final powder was formed by particles of irregular shape and median diameter D50 of 3.8 mu m and their agglomerates. The chemical analysis resulted in the mean composition of 49.0 at.% Mn, 25.6 at.% Fe and 25.4 at.% Si. At room temperature, the prepared samples featured a heterogeneous magnetic structure consisting of dominant paramagnetic phase confirmed by Mossbauer spectrometry and a weak ferro-/ferrimagnetic contribution detected by magnetization curves. From the field-cooled and zero-field-cooled curves the Neel temperature of 67 K was determined.
Trvalý link: http://hdl.handle.net/11104/0330854