| FRIÁK, Martin, Martina MAZALOVÁ, Ilja TUREK, Adéla ZEMANOVÁ, Jiří KAŠTIL, Jiří KAMARÁD, Martin MÍŠEK, Zdeněk ARNOLD, Oldřich SCHNEEWEISS, Monika VŠIANSKÁ, Martin ZELENÝ, Aleš KROUPA, Jana PAVLŮ a Mojmír ŠOB. An Ab Initio Study of Pressure-Induced Changes of Magnetism in Austenitic Stoichiometric Ni2MnSn. Materials. Basel: MDPI, 2021, roč. 14, č. 3, s. 1-16. ISSN 1996-1944. Dostupné z: https://dx.doi.org/10.3390/ma14030523. |
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@article{1733460,
author = {Friák, Martin and Mazalová, Martina and Turek, Ilja and Zemanová, Adéla and Kaštil, Jiří and Kamarád, Jiří and Míšek, Martin and Arnold, Zdeněk and Schneeweiss, Oldřich and Všianská, Monika and Zelený, Martin and Kroupa, Aleš and Pavlů, Jana and Šob, Mojmír},
article_location = {Basel},
article_number = {3},
doi = {http://dx.doi.org/10.3390/ma14030523},
keywords = {Ni-Mn-Sn; alloys; pressure; magnetism; ab initio; stability; point defects; swaps},
language = {eng},
issn = {1996-1944},
journal = {Materials},
title = {An Ab Initio Study of Pressure-Induced Changes of Magnetism in Austenitic Stoichiometric Ni2MnSn},
url = {https://doi.org/10.3390/ma14030523},
volume = {14},
year = {2021}
}
TY - JOUR
ID - 1733460
AU - Friák, Martin - Mazalová, Martina - Turek, Ilja - Zemanová, Adéla - Kaštil, Jiří - Kamarád, Jiří - Míšek, Martin - Arnold, Zdeněk - Schneeweiss, Oldřich - Všianská, Monika - Zelený, Martin - Kroupa, Aleš - Pavlů, Jana - Šob, Mojmír
PY - 2021
TI - An Ab Initio Study of Pressure-Induced Changes of Magnetism in Austenitic Stoichiometric Ni2MnSn
JF - Materials
VL - 14
IS - 3
SP - 1-16
EP - 1-16
PB - MDPI
SN - 19961944
KW - Ni-Mn-Sn
KW - alloys
KW - pressure
KW - magnetism
KW - ab initio
KW - stability
KW - point defects
KW - swaps
UR - https://doi.org/10.3390/ma14030523
L2 - https://doi.org/10.3390/ma14030523
N2 - We have performed a quantum-mechanical study of a series of stoichiometric Ni2MnSn structures focusing on pressure-induced changes in their magnetic properties. Motivated by the facts that (i) our calculations give the total magnetic moment of the defect-free stoichiometric Ni2MnSn higher than our experimental value by 12.8% and (ii) the magnetic state is predicted to be more sensitive to hydrostatic pressures than seen in our measurements, our study focused on the role of point defects, in particular Mn-Ni, Mn-Sn and Ni-Sn swaps in the stoichiometric Ni2MnSn. For most defect types we also compared states with both ferromagnetic (FM) and anti-ferromagnetic (AFM) coupling between (i) the swapped Mn atoms and (ii) those on the Mn sublattice. Our calculations show that the swapped Mn atoms can lead to magnetic moments nearly twice smaller than those in the defect-free Ni2MnSn. Further, the defect-containing states exhibit pressure-induced changes up to three times larger but also smaller than those in the defect-free Ni2MnSn. Importantly, we find both qualitative and quantitative differences in the pressure-induced changes of magnetic moments of individual atoms even for the same global magnetic state. Lastly, despite of the fact that the FM-coupled and AFM-coupled states have often very similar formation energies (the differences only amount to a few meV per atom), their structural and magnetic properties can be very different.
ER -
FRIÁK, Martin, Martina MAZALOVÁ, Ilja TUREK, Adéla ZEMANOVÁ, Jiří KAŠTIL, Jiří KAMARÁD, Martin MÍŠEK, Zdeněk ARNOLD, Oldřich SCHNEEWEISS, Monika VŠIANSKÁ, Martin ZELENÝ, Aleš KROUPA, Jana PAVLŮ a Mojmír ŠOB. An Ab Initio Study of Pressure-Induced Changes of Magnetism in Austenitic Stoichiometric Ni2MnSn. \textit{Materials}. Basel: MDPI, 2021, roč.~14, č.~3, s.~1-16. ISSN~1996-1944. Dostupné z: https://dx.doi.org/10.3390/ma14030523.
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