| Title: | Complex magnetism of single-crystalline AlCoCrFeNi nanostructured high-entropy alloy |
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| Authors: | ID Koželj, Primož, Institut "Jožef Stefan" (Author)
ID Jelen, Andreja, Institut "Jožef Stefan" (Author)
ID Dražić, Goran (Author)
ID Vrtnik, Stanislav, Institut "Jožef Stefan" (Author)
ID Luzar, Jože, Institut "Jožef Stefan" (Author)
ID Wencka, Magdalena, Institut "Jožef Stefan" (Author)
ID Meden, Anton (Author)
ID Feuerbacher, Michael (Author)
ID Dolinšek, Janez, Institut "Jožef Stefan" (Author) |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S2589004223009719?via%3Dihub#abs0015
 PDF - Presentation file, download (4,46 MB)
MD5: 2715F1D75664671D3EA265418215BF95
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | We have investigated magnetism of the Al28Co20Cr11Fe15Ni26 single-crystalline high-entropy alloy. The material is nanostructured, composed of a B2 matrix with dispersed spherical-like A2 nanoparticles of average diameter 64 nm. The magnetism was studied from 2 to 400 K via direct-current magnetization, hysteresis curves, alternating-current magnetic susceptibility, and thermoremanent magnetization time decay, to determine the magnetic state that develops in this highly structurally and chemically inhomogeneous material. The results reveal that the Cr-free B2 matrix of composition Al28Co25Fe15Ni32 forms a disordered ferromagnetic (FM) state that undergoes an FM transition at 390 K. The Al- and Ni-free A2 nanoparticles of average composition Co19Cr56Fe25 adopt a core-shell structure, where the shells of about 2 nm thickness are CoFe enriched. While the shells are FM, the nanoparticle cores are asperomagnetic, classifying into the broad class of spin glasses. Asperomagnetism develops below 15 K and exhibits broken-ergodicity phenomena, typical of magnetically frustrated systems. |
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| Keywords: | complex magnetism, high-entropy alloys, nanostructured alloys |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 09.02.2023 |
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| Article acceptance date: | 12.05.2023 |
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| Publication date: | 18.05.2023 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2023 |
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| Number of pages: | str. 1-14 |
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| Numbering: | Vol. 26, iss. 6, [article no.] 106894 |
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| Source: | Nizozemska |
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| PID: | 20.500.12556/DiRROS-28894  |
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| UDC: | 537 |
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| ISSN on article: | 2589-0042 |
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| DOI: | 10.1016/j.isci.2023.106894 |
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| COBISS.SI-ID: | 153712387 |
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| Copyright: | ©2023 The Author(s). |
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| Note: | Nasl. z nasl. zaslona;
Soavtorji iz Slovenije: Andreja Jelen, Goran Dražić, Stanislav Vrtnik, Jože Luzar, Magdalena Wencka, Anton Meden, Janez Dolinšek;
Opis vira z dne 29. 5. 2023;
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| Publication date in DiRROS: | 13.04.2026 |
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| Views: | 125 |
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| Downloads: | 66 |
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