Journal of Radio Electronics. eISSN 1684-1719. 2024. ¹4
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DOI: https://doi.org/10.30898/1684-1719.2024.4.9
HIGH-TEMPERATURE TREATMENT OF FUNCTIONAL HEUSLER
ALLOY Ni46Mn41In13 THIN FOILS FOR MICROSYSTEM DEVICES
D.D. Kuznetsov1, E.I. Kuznetsova2, D.V. Danilov3, I.I. Musabirov4,
A.V. Prokunin1, V.V. Koledov1, V.G. Shavrov1
1 Kotelnikov IRE RAS, 125009, Russia, Moscow
2 M.N. Mikheev Institute of Metal Physics of Ural Branch RAS
620108, Russia, Ekaterinburg
3 IRC for Nanotechnology of the Science Park of St. Petersburg State University
199034, Russia, St. Petersburg
4 Institute for Metals Superplasticity Problems RAS
450001, Russia, Ufa
The paper was received March 20, 2024.
Abstract. In this study, the high-temperature transformation in a thin foil of non-stoichiometric Heusler alloy based on Ni-Mn-In is investigated using in-situ TEM. The highly ordered cubic L21 phase undergoes decomposition upon heating, forming a phase with a composition close to Ni75Mn25, which is identified as disordered FCC-Ni3Mn and secondary phases, mainly manganese oxides and sulfides. All phases formed upon heating to a temperature of 1173 K are preserved during the in-situ cooling experiment to a temperature of 123 K.
Key words: phase transformation, phase stability, size effects.
Financing: 1. The work was carried out with partial support from the state assignment of the IRE Kotelnikova RAS; 2. The work was carried out with partial support from the state assignment of the M.N. Mikheev Institute of Physics of Metals, Ural Branch of the Russian Academy of Sciences, code "Pressure" G.r. ¹ 122021000032-5; 3. The preparation of foils and electron microscopic studies were carried out with the support of St. Petersburg State University, project code AAAA-A19-119091190094-6; 4. Alloy ingots were melted as part of the state assignment of the IPSM RAS.
Corresponding author: Kuznetsov Dmitry Dmitrievich, Kuznetsov.dmitry89@gmail.com
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For citation:
Kuznetsov D.D., Kuznetsova E.I., Danilov D.V., Musabirov I.I., Prokunin A.V., Koledov V.V., Shavrov V.G. High-temperature treatment of functional Heusler alloy Ni46Mn41In13 thin foils for microsystem devices and electronics. // Journal of Radio Electronics. – 2024. – ¹. 4. https://doi.org/10.30898/1684-1719.2024.4.9