Magnetic and magneto-optical properties of Fe.sub.75-x./sub.Mn.sub.25./sub.Ga.sub.x./sub. Heusler-like compounds

Král, D.; Beran, L.; Zelený, M.; Zemen, J.; Antoš, R.; Hamrle, J.; Zázvorka, J.; Rameš, Michal; Onderková, Kristýna; Heczko, Oleg; Veis, M.

doi:https://dx.doi.org/10.3390/ma13030703

Number of the records: 1

Magnetic and magneto-optical properties of Fe.sub.75-x./sub.Mn.sub.25./sub.Ga.sub.x./sub. Heusler-like compounds

1.

SYSNO ASEP	0539071
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Magnetic and magneto-optical properties of Fe_75-xMn₂₅Ga_x Heusler-like compounds
Author(s)	Král, D. (CZ) Beran, L. (CZ) Zelený, M. (CZ) Zemen, J. (CZ) Antoš, R. (CZ) Hamrle, J. (CZ) Zázvorka, J. (CZ) Rameš, Michal (FZU-D)_{RID, ORCID} Onderková, Kristýna (FZU-D) Heczko, Oleg (FZU-D)_{RID, ORCID} Veis, M. (CZ)
Number of authors	11
Article number	703
Source Title	Materials. - : MDPI Roč. 13, č. 3 (2020), s. 1-12
Number of pages	12 s.
Language	eng - English
Country	CH - Switzerland
Keywords	Heusler compounds ; Fe-Mn-Ga ; martensitic transformation ; Curie point ; magneto-optics ; ab initio
Subject RIV	BM - Solid Matter Physics ; Magnetism
OECD category	Condensed matter physics (including formerly solid state physics, supercond.)
R&D Projects	GA16-00043S GA ČR - Czech Science Foundation (CSF)
	LM2018096 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Open access
Institutional support	FZU-D - RVO:68378271
UT WOS	000515503100210
EID SCOPUS	85079588648
DOI	10.3390/ma13030703
Annotation	Fe-Mn-Ga Heusler-like compounds were analyzed in a wide range of Fe/Ga ratios while keeping the Mn content constant and equal 25at%. Materials were prepared by arc-melting from pure elements and annealed. Experiments focused on magnetization from 4 to 1000 K and magnetic field up to 9 T. (Magneto-)optical measurements were employed to shed more light on the magnetic state and electronic structure of investigated materials. Magnetization indicated that in the vicinity of stoichiometry (Fe2MnGa) the compounds are ferro/ferrimagnetic, the Fe-deficient compound is a paramagnet and at high Fe concentration antiferromagnetism prevails. Theoretical calculations of corresponding ordered and disordered stoichiometric compounds were done and compared to the experiment. This comparison suggests that the Heusler crystal structure, L21, is absent. The density of states for ordered and disordered structures explained missing martensitic transformation in investigated materials.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2021
Electronic address	http://hdl.handle.net/11104/0316823

Number of the records: 1