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Structural Refinement and Optoelectrical Properties of Nd₂Ru₂O₇ and Gd₂Ru₂O₇ Pyrochlore Oxides for Photovoltaic Applications. [PDF]

Materials (Basel)
Kraidy AF, Yapi AS, El Marssi M, Penton Madrigal A, Gagou Y.   +4 more
europepmc   +1 more source

Structural and Chemical Insights on the Incorporation of Americium into Monoclinic Zirconia (m-ZrO₂)

Murphy GL, Gilson S, Popa K, Prieur D, Schenk S, Vălu S, Ramanantoanina H, Pruessmann T, Vitova T, Dardenne K, Rothe J, Colle J, Walter O, Huittinen N.   +13 more
europepmc   +1 more source

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Murataite–Pyrochlore Series: A Family of Complex Oxides with Nanoscale Pyrochlore Clusters

Angewandte Chemie - International Edition, 2010
identified murataite in a Synroc matrixwith imitators of HLRWs from PO Mayak, a radiochemicalfacility for production and reprocessing of nuclear fuel in theRussian Federation. Five volume percent of this phaseaccumulated about 40% of the total uranium present in thesample,andthisledtodetailedinvestigationsofthechemistryand properties of murataite, in ...
Sergey V Krivovichev, Sergey V Yudintsev, S V Stefanovsky   +2 more
exaly   +3 more sources

Pyrochlores for Advanced Oxygen Electrocatalysis

Accounts of Chemical Research, 2022
Fuel cells (FCs), water electrolyzers (WEs), unitized regenerative fuel cells (URFCs), and metal-air batteries (MABs) are among the emerging electrochemical technologies for energy storage, fuel (H2), oxidant (O2), and clean energy production. Their commercial applications are hindered by the low oxygen reduction reaction/oxygen evolution reaction (ORR/
Pralay Gayen, Sulay Saha, Vijay Ramani
openaire   +2 more sources

Geochemical alteration of pyrochlore group minerals; pyrochlore subgroup

American Mineralogist, 1995
Primary alteration of uranpyrochlore from granitic pegmatites is characterized by the substitutions ADYD-+ ACaYO,ANaYF-+ ACaYO,and ANaYOI-I--+ ACaYO.Alteration occurred at "" 450-650 °C and 2-4 kbar with fluid-phase compositions characterized by relatively low aNa+,high aeaH, and high pH.
Gregory R. Lumpkin, Rodney C. Ewing
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Luminescence of Pyrochlores

Journal of Solid State Chemistry, 1994
Abstract The luminescence of the pyrochlores Y2Ti2O7, Cd2Nb2O7, and Pb2Nb2O7 is reported and discussed. Relations with the luminescence of comparable compounds is made.
M. Hamoumi, M. Wiegel, G. Blasse
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Pyrochlores. X. Madelung energies of pyrochlores and defect fluorites

Canadian Journal of Chemistry, 1976
Electrostatic (Madelung) lattice energies have been calculated for a wide range of compounds A2B2X6Y with the pyrochlore-type structure. The cases of disorder and partial disorder on the non-metal sites have been examined, as well as the inverse case, where Y is a positive ion.
William W. Barker, Peter S. White, Osvald Knop   +2 more
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Pyrochlore-type tin niobate

Acta Crystallographica Section C Crystal Structure Communications, 2001
A single crystal of Sn(1.59)Nb(1.84)O(6.35) was grown at 1273 K from a mixture of sodium niobate and tin(II) chloride. The structure is of pyrochlore type A(2)B(2)O(7). The tin is partially oxidized to tin(IV) and competes with niobium for the occupation of site B.
L P, Cruz, J M, Savariault, J, Rocha
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The new pyrochlore Gd2GaSbO7

Journal of Physics and Chemistry of Solids, 1984
Preparation du compose a partir d'un melange Ga 2 O 3 , Sb 2 O 3 et Gd 2 O 3 dans les rapports molaires 1:1:2, par chauffage a l'air a differentes temperatures.
P. Garcia Casado, I. Rasines
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Crystal Chemistry of Pyrochlore

Journal of the American Ceramic Society, 1962
Analyses of natural minerals suggest the wide variety of both cationic and anionic substitutions possible in the pyrochlore structure. Limits on the possibilities of ionic substitution in pyrochlore have been determined by the preparation of a large number of compounds.
EUGENE ALESHIN, RUSTUM ROY
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