Crystal and Magnetic Structure of MnSb2O4.

Fjellvåg, Helmer; Kjekshus, Arne; Leskelä, Tuula; Leskelä, Markku; Hoyer, Eberhard

doi:10.3891/acta.chem.scand.39a-0389

Cited by 27 publications

(34 citation statements)

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“…A rather wide [Ni 3 Sn 2 LT þ Ni 3 Sn 2 HT] two-phase region was observed on the Ni-rich side of the Ni 3 Sn 2 LT-phase, whereas on the Sn-rich side narrow [Ni 3 Sn 2 LT þ Ni 3 Sn 2 HT] and [Ni 3 Sn 2 LT 0 þ Ni 3 Sn 2 HT] two-phase regions were found. Considering significant supercooling observed during thermal analysis all these results suggest a first order transition and confirm the results of Fjellvag and Kjekshus [41].…”

Section: Ni 3 Sn 2 -Phasessupporting

confidence: 90%

“…Uncertainties concerning the Ni 3 Sn phase transition comprising the two eutectoid reactions have already been discussed. The transformation between the Ni 3 Sn 2 phases is believed to be of first order [41,46]. Details, however, have not been reported in literature.…”

Section: Literature Reviewmentioning

confidence: 90%

“…This is in good agreement with data from Leineweber et al, who reported the maximum temperatures of 477 C [44] and 517 C [46], respectively. The type of transition was reported to be of first order by Fjellvag and Kjekshus [41], but their evaluation does not include the incommensurate LT 0 -and LT 00 -phase. The present XRD experiments on samples quenched from various temperatures also suggest a first order transition.…”

Section: Ni 3 Sn 2 -Phasesmentioning

confidence: 96%

“…Although there exists a group/subgroup relation between the space groups P6 3 /mmc (Ni 3 Sn 2 HT-phase) and Pnma (Ni 3 Sn 2 LT-phase), Fjellvag and Kjekshus [41] reported this transition to be of first order. Their evaluation was based on room temperature and high temperature XRD experiments in which no continuous transition was observed.…”

Section: Literature Reviewmentioning

confidence: 98%

“…The Ni 3 Sn 2 LT-phase has an orthorhombic structure (Pnma, own structure type) according to Brand [37] and Fjellvag and Kjekshus [41]. Very recently Leineweber et al [44e47] reinvestigated this part of the phase diagram in detail.…”

Section: Literature Reviewmentioning

confidence: 98%

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A new investigation of the system Ni–Sn

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Section: Ni 3 Sn 2 -Phasessupporting

confidence: 90%

Section: Literature Reviewmentioning

confidence: 90%

Section: Ni 3 Sn 2 -Phasesmentioning

confidence: 96%

Section: Literature Reviewmentioning

confidence: 98%

Section: Literature Reviewmentioning

confidence: 98%

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Earth‐Abundant Transition Metal‐Based Mullite‐Type Oxide Catalysts for Heterogeneous Oxidation Reactions

Thampy

Ashburn

Cho

et al. 2021

Adv Energy and Sustain Res

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Driving innovations in the field of catalysis and electrocatalysis for a sustainable future necessitates the development of highly active, thermally stable, and low‐cost heterogeneous catalysts. Earth‐abundant transition metal‐based oxide catalysts are highly sought after to replace expensive platinum group metals. Identifying new catalyst formulations and design principles to tune materials’ bulk electronic structures and surface energetics for enhanced catalytic activity accelerates the search. Herein, the inherent attributes of mullite‐type oxides in catalyzing various oxidation reactions—crystal structure, electronic structure, stability, and catalytic activity—are reviewed. A comprehensive understanding of the nature of active sites, oxidation mechanisms, strategies to enhance the catalytic performance and regeneration of active sites, emerging opportunities in electrocatalysis and sensors, and challenges in computational methodologies is discussed. Finally, a perspective on expanding mullite‐type oxides’ viability for commercial applications in environmental and sustainable energy production through the integration of advanced synthetic approaches, operando spectroscopic techniques, and high‐throughput computational tools is outlined.

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