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Microwave-Assisted Synthesis of the New Solid-Solution (V1–xCrx)2GaC (0 ≤ x ≤ 1), a Pauli Paramagnet Almost Matching the Stoner Criterion for x = 0.80

Kubitza, Niels ; Xie, Ruiwen ; Tarasov, Ivan ; Shen, Chen ; Zhang, Hongbin ; Wiedwald, Ulf ; Birkel, Christina S. (2023)
Microwave-Assisted Synthesis of the New Solid-Solution (V1–xCrx)2GaC (0 ≤ x ≤ 1), a Pauli Paramagnet Almost Matching the Stoner Criterion for x = 0.80.
In: Chemistry of Materials, 35 (11)
doi: 10.1021/acs.chemmater.3c00591
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

MAX phases that exhibit long-range magnetic order in the bulk are still very hard to synthesize. Chromium and manganese are the cutoff elements when transitioning through the 3dmetals that still form stable full and doped MAX phases, respectively. An iron-based (on the M-site) bulk MAX phase does not exist. Therefore, other strategies to induce long-range magnetic ordering in bulk MAX phases are necessary to open the path to new functional materials. Here, we demonstrate the nonconventional synthesis of a hitherto unknown MAX phase solid-solution (V1–xCrx)2GaC by microwave heating. The full series with 0 < x < 1 (x = 0.20, 0.40, 0.50, 0.60, 0.80) forms almost single phase with minimal differences in their morphology. Their magnetic properties, however, differ rather significantly, with a maximum susceptibility around x = 0.80. Both the experimental and theoretical/ab initio magnetic analysis confirm that the solid-solution (V1–xCrx)2GaC is an itinerant Pauli paramagnet that almost fulfills the Stoner criterion for ferromagnetic order (for compositions with x around 0.80). This is a powerful insight into how chemical composition couples with electronic structure and the resulting bulk magnetic properties because it provides crucial guidelines to produce long-range ordered magnetic MAX phases.

Typ des Eintrags: Artikel
Erschienen: 2023
Autor(en): Kubitza, Niels ; Xie, Ruiwen ; Tarasov, Ivan ; Shen, Chen ; Zhang, Hongbin ; Wiedwald, Ulf ; Birkel, Christina S.
Art des Eintrags: Bibliographie
Titel: Microwave-Assisted Synthesis of the New Solid-Solution (V1–xCrx)2GaC (0 ≤ x ≤ 1), a Pauli Paramagnet Almost Matching the Stoner Criterion for x = 0.80
Sprache: Englisch
Publikationsjahr: 17 Mai 2023
Verlag: ACS Publications
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Chemistry of Materials
Jahrgang/Volume einer Zeitschrift: 35
(Heft-)Nummer: 11
DOI: 10.1021/acs.chemmater.3c00591
Kurzbeschreibung (Abstract):

MAX phases that exhibit long-range magnetic order in the bulk are still very hard to synthesize. Chromium and manganese are the cutoff elements when transitioning through the 3dmetals that still form stable full and doped MAX phases, respectively. An iron-based (on the M-site) bulk MAX phase does not exist. Therefore, other strategies to induce long-range magnetic ordering in bulk MAX phases are necessary to open the path to new functional materials. Here, we demonstrate the nonconventional synthesis of a hitherto unknown MAX phase solid-solution (V1–xCrx)2GaC by microwave heating. The full series with 0 < x < 1 (x = 0.20, 0.40, 0.50, 0.60, 0.80) forms almost single phase with minimal differences in their morphology. Their magnetic properties, however, differ rather significantly, with a maximum susceptibility around x = 0.80. Both the experimental and theoretical/ab initio magnetic analysis confirm that the solid-solution (V1–xCrx)2GaC is an itinerant Pauli paramagnet that almost fulfills the Stoner criterion for ferromagnetic order (for compositions with x around 0.80). This is a powerful insight into how chemical composition couples with electronic structure and the resulting bulk magnetic properties because it provides crucial guidelines to produce long-range ordered magnetic MAX phases.

Zusätzliche Informationen:

This work has been supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) within CRC/TRR 270, projects B03 and B02, A05 (Project-ID 405553726).

Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Theorie magnetischer Materialien
07 Fachbereich Chemie
07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Anorganische Chemie
Hinterlegungsdatum: 27 Jul 2023 13:09
Letzte Änderung: 31 Jul 2023 07:58
PPN: 510029760
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