Low-temperature antiferromagnetism in quaternary Mn2FeSi0.5Al0.5 alloys
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F24%3A10253892" target="_blank" >RIV/61989100:27240/24:10253892 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/24:10491837 RIV/61989592:15640/24:73624587 RIV/61989100:27360/24:10253892
Result on the web
<a href="https://pubs.aip.org/aip/adv/article/14/1/015218/2993137" target="_blank" >https://pubs.aip.org/aip/adv/article/14/1/015218/2993137</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/9.0000716" target="_blank" >10.1063/9.0000716</a>
Alternative languages
Result language
angličtina
Original language name
Low-temperature antiferromagnetism in quaternary Mn2FeSi0.5Al0.5 alloys
Original language description
In this work, the quaternary Mn2FeSi0.5Al0.5 alloys are prepared for the first time in the form of cylinder-shaped ingots by traditional induction melting technique followed by homogenization annealing at 773 K for 100 h. The microstructural and magnetic properties of as-cast and annealed Mn2FeSi0.5Al0.5 samples are analyzed in detail and compared to the Mn2FeSi and Mn2FeAl ternary alloys. The Mn2FeSi0.5Al0.5 ingots are two-phase both before and after annealing, and their diffractograms correspond to the primitive cubic β-Mn structure. Obtained lattice constant of 0.6274 nm is only slightly lower than that of Mn2FeAl alloy (0.6339 nm) and different from Mn2FeSi (0.5672 nm). The existence of both phases enriched in Si at the expense of Al and Mn was confirmed by differential thermal analysis showing two endothermic and exothermic peaks at temperatures of 1363 K and 1407 K. The magnetic properties of both quaternary samples studied in wide temperature range from 5 K to 573 K indicate paramagnetic behavior at room and elevated temperatures. The annealed system has the values of Curie temperature and effective paramagnetic moment comparable to the ternary Mn2FeAl alloy. The transition to antiferromagnetic state occurring at Néel temperatures of 34 K (as-cast sample) and 37 K (annealed sample) is caused by strong geometric frustration of β-Mn structure. The magnetic transitions observed in both samples between Néel and room temperature are discussed in terms of the existence of Griffiths phase.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/GA21-05339S" target="_blank" >GA21-05339S: Structural and Physical Aspects of Inverse Heusler Alloys Mn2FeZ, Z = Si, Al, Sn</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
AIP Advances
ISSN
2158-3226
e-ISSN
2158-3226
Volume of the periodical
14
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
"015218(1)"-"015218(5)"
UT code for WoS article
001144149100004
EID of the result in the Scopus database
2-s2.0-85182735216