Flux Synthesis, Crystal Structures, and Magnetism of the Series La2n+2MnSen+2O2n+2 (n = 0–2)

Peschke, Simon; Johrendt, Dirk

doi:10.3390/inorganics5010009

Cited by 4 publications

(1 citation statement)

References 15 publications

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“…The n = 0 member, β-La 2 O 2 MnSe 2 (Figure b), is built from Mn–Se magnetic layers separated by [Ln 2 O 2 ] 2+ fragments (separation ∼8.8 Å) and orders antiferromagnetically below T N = 27 K . The analogous Mn layers in the n = 1 member of the series, La 4 O 4 MnSe 3 , are separated by ∼7 Å, but the Mn cations are separated into pseudo-1D chains (rather than the 2D layers of β-La 2 O 2 MnSe 2 ) . The decreased exchange interactions within the magnetic layers are likely to contribute to the reduced T N = 15 K. With increasing n (i.e., from n = 0 mC -La 2 O 2 MnSe 2 , n = 1 La 4 O 4 MnSe 3 , and n = 2 La 6 O 6 MnSe 4 ), the distance between the layers containing the magnetic chains increases.…”

Section: Quaternary Oxychalcogenidesmentioning

confidence: 99%

Structural Diversity of Rare-Earth Oxychalcogenides

et al. 2022

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Mixed-anion systems have garnered much attention in the past decade with attractive properties for diverse applications such as energy conversion, electronics, and catalysis. The discovery of new materials through mixed-cation and single-anion systems proved highly successful in the previous century, but solid-state chemists are now embracing an exciting design opportunity by incorporating multiple anions in compounds such as oxychalcogenides. Materials containing rare-earth ions are arguably a cornerstone of modern technology, and herein, we review recent advances in rare-earth oxychalcogenides. We discuss ternary rare-earth oxychalcogenides whose layered structures illustrate the characters and bonding preferences of oxide and chalcogenide anions. We then review quaternary compounds which combine anionic and cationic design strategies toward materials discovery and describe their structural diversity. Finally, we emphasize the progression from layered two-dimensional compounds to three-dimensional networks and the unique synthetic approaches which enable this advancement.

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Section: Quaternary Oxychalcogenidesmentioning

confidence: 99%

Structural Diversity of Rare-Earth Oxychalcogenides

et al. 2022

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Designing new polar materials

McCabe

2023

Comprehensive Inorganic Chemistry III

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Flux synthesis, crystal structures, and physical properties of new lanthanum vanadium oxyselenides

et al. 2017

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The new lanthanum vanadium oxyselenides LaVSeO, LaVSeO, LaVSeO, LaVSeO, and LaVSeO were synthesized in eutectic NaI/KI fluxes, and their crystal structures were determined using single-crystal and powder X-ray diffraction experiments. LaVSeO and LaVSeO adopt known structure types, whereas LaVSeO, LaVSeO, and LaVSeO crystallize in hitherto unknown structure types. The main building blocks of these compounds are chains of edge-sharing VSe, VSeO, and/or VSeO octahedra, linked together by edge-sharing OLa and/or OLaV tetrahedra forming fluorite-like ribbons. LaVSeO, LaVSeO, and LaVSeO contain only V(iii) ions, whereby LaVSeO and LaVSeO contain mixtures of either V(iii)/V(iv) or V(iii)/V(v) cations. Magnetic measurements indicate Curie-Weiss paramagnetism and magnetic ordering of the vanadium moments at low temperatures. More precisely, we observe antiferromagnetism for LaVSeO, metamagnetism for LaVSeO, ferromagnetism for LaVSeO and a complex magnetic structure for LaVSeO.

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Flux Synthesis, Crystal Structures, and Magnetism of the Series La2n+2MnSen+2O2n+2 (n = 0–2)

Abstract: Three members of the homologous series of manganese oxyselenides with the general formula La 2n+2 MnSe n+2 O 2n+2 (n = 0-2) have been synthesized in a NaI/KI flux and characterized by single-crystal X-ray diffraction, powder X-ray diffraction and magnetic measurements.

Cited by 4 publications

References 15 publications

Structural Diversity of Rare-Earth Oxychalcogenides

Structural Diversity of Rare-Earth Oxychalcogenides

Designing new polar materials

Flux synthesis, crystal structures, and physical properties of new lanthanum vanadium oxyselenides

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