Journal ArticleDOI
New oxide pyrochlores: A2[B2−xAx]O7−y (A = Pb, Bi; B = Ru, Ir)
TLDR
A series of mixed metal oxides with pyrochlore structure has been discovered and can be described by the general formula A2[B2−xAx]O7−y where A = Pb or Bi, B = Ru or Ir, 0 < x ≲ 1 and 0 ≤ y ≤ 0.5 as mentioned in this paper.About:
This article is published in Materials Research Bulletin.The article was published on 1981-05-01. It has received 73 citations till now. The article focuses on the topics: Lattice constant & Pyrochlore.read more
Citations
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Oxide pyrochlores — A review
Journal ArticleDOI
Synthesis of a metallic mesoporous pyrochlore as a catalyst for lithium–O2 batteries
TL;DR: This work reports the synthesis of a novel metallic mesoporous oxide using surfactant templating that shows promising catalytic activity and results in a cathode with a high reversible capacity and a lower charge potential for oxygen evolution from Li2O2 than pure carbon.
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Solvothermal synthesis of perovskites and pyrochlores: crystallisation of functional oxides under mild conditions
TL;DR: The aim is to show how the synthesis of dense, mixed-metal oxide materials, usually prepared using the high temperatures associated with solid-chemistry, is perfectly feasible from solution in one step reactions, typically at temperatures as low as 200 °C, and that important families of oxide materials have now been reported to crystallise using such synthetic approaches.
Journal ArticleDOI
Oxide Catalysts for Rechargeable High‐Capacity Li–O2 Batteries
Si Hyoung Oh,Linda F. Nazar +1 more
TL;DR: In this paper, the amount of catalyst necessary for oxygen evolution performance was reduced to as little as 5 wt% by supporting the highly-divided pyrochlore oxide crystallites on carbon using in-situ deposition methods.
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Order–disorder transition in Nd2−yGdyZr2O7 pyrochlore solid solution: An X-ray diffraction and Raman spectroscopic study
TL;DR: In this paper, it has been observed from Rietveld analysis that with increase in concentration of Gd in Nd2−yGdyZr2O7, the value of the x parameter of the 48f oxygen changes from 0.332(1) to 0.343(1).
References
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Journal ArticleDOI
Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
TL;DR: The effective ionic radii of Shannon & Prewitt [Acta Cryst. (1969), B25, 925-945] are revised to include more unusual oxidation states and coordinations as mentioned in this paper.
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The Preparation of Some Ternary Oxides of the Platinum Metals1,2
John J. Randall,Roland Ward +1 more
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Structural characteristics of pyrochlore formation
TL;DR: By calculating the value of unknown oxygen positional parameter x for a large number of A3+2B4+2O7 pyrochlores, it was determined that increasing the radius of the A cation in a series of constant B increased the value x as discussed by the authors.
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Pb2M2O7−x (M = Ru, Ir, Re) — Preparation and properties of oxygen deficient pyrochlores
TL;DR: In this paper, the preparation and properties of three oxygen deficient pyrochlores are reported and the stability of this defect-pyrochlore structure relative to the perovskite structure is discussed.