Results 111 to 120 of about 4,273 (189)

Effect of Fe-Doping on Thermal Expansion and Stability of Bismuth Magnesium Tantalate Pyrochlorere. [PDF]

Materials (Basel), 2022
Zhuk NA, Krzhizhanovskaya MG, Nekipelov SV, Sivkov VN, Sivkov DV.   +4 more
europepmc   +1 more source

Size Effects in Ruthenium-Based Thick-Film Resistors: Rutile vs. Pyrochlore-Based Resistors

Active and Passive Electronic Components, 1991
The size effect, namely the change of sheet resistance, Rs as a function of resistor length, has been investigated in layers whose conductive phase evolves from Pb-rich (Ru-deficient pyrochlores) to Pb2Ru2O6.5 and finally to RuO2 by increasing the firing
M. Prudenziati, F. Sirotti, M. Sacchi, B. Morten, A. Tombesi, T. Akomolafe   +5 more
doaj   +1 more source

Preparation and characterization of bismuth ruthenate pyrochlore via solid state reaction and sol-gel methods [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2010
Bismuth ruthenate pyrochlores, potential cathode materials for intermediate temperature solid oxide fuel cells(ITSOFCs), were prepared via solid-state and sol-gel method.
Mayuree Sansernnivet, Pimpa Limthongkul
doaj  

Weak magnetic transitions in pyrochlore Bi2Ir2O7

, 2013
Muon spin relaxation measurements on Bi2Ir2O7 show that it undergoes a bulk magnetic transition at 1.84(3) K. This is accompanied by increases in the muon spin relaxation rate and the amplitude of the non-relaxing part of the signal. The magnetic field experienced by muons is estimated to be 0.7 mT at low-temperature, around two orders of magnitude ...
Baker, P.J., Möller, J.S., Pratt, F.L., Hayes, W., Blundell, S.J., Lancaster, T., Qi, T.F., Cao, G.   +7 more
openaire   +3 more sources

Dipolar Spin Ice Regime Proximate to an All-In-All-Out Néel Ground State in the Dipolar-Octupolar Pyrochlore Ce_{2}Sn_{2}O_{7}

Physical Review X
The dipolar-octupolar (DO) pyrochlores, R_{2}M_{2}O_{7} (R=Ce,Sm,Nd), are key players in the search for realizable novel quantum spin liquid (QSL) states as a large parameter space within the DO pyrochlore phase diagram is theorized to host QSL states of
D. R. Yahne, B. Placke, R. Schäfer, O. Benton, R. Moessner, M. Powell, J. W. Kolis, C. M. Pasco, A. F. May, M. D. Frontzek, E. M. Smith, B. D. Gaulin, S. Calder, K. A. Ross   +13 more
doaj   +1 more source

Catalysts for ultrahigh current density oxygen cathodes for space fuel cell applications [PDF]

The objective of this research was to identify promising electrocatalyst/support systems for the oxygen cathode in alkaline fuel cells operating at relatively high temperatures, O2 pressures and current densities.
Aldred, W., Shingler, M., Tryk, D., Wang, C., Yeager, E.   +4 more
core   +1 more source

Role of A-sites in pyrochlore lanthanide ruthenate for electrocatalysis of oxygen evolution reaction

Journal of Materiomics
Developing highly stable and efficient catalysts for oxygen evolution reaction (OER) is extremely important to sustainable energy conversion and storage, but improved efficiency is largely hindered by sluggish reaction kinetics.
Hengyu Guo, Zhengping Zhang, Feng Wang
doaj   +1 more source

Visible-Light Photoactivity of Bi-pyrochlores with High Fe Contents

Acta Chimica Slovenica, 2014
Three Bi-pyrochlores with different Fe contents  (Bi2Ti2O7, Bi1.65Nb1.12Fe1.16O7 and  Bi1.9Te0.58Fe1.52O6.87)  were synthesized in the form of nanopowders with similar morphological characteristics.
Matjaž Valant, Metka Benčina, Mattia Fanetti   +2 more
doaj  

Spin-Dependent First-Principles Study on Optoelectronic Properties of Neodymium Zirconates Pyrochlores Nd₂Zr₂O₇ in Fd-3m and Pmma Phases. [PDF]

Molecules, 2022
Qayyum A, Azam S, Reshak AH, Akbar J, Abbas Z, Ullah H, Ramli MM.   +6 more
europepmc   +1 more source

Synthesis, Phase Formation, and Raman Spectroscopy of Ni and Zn(Mg) Codoped Bismuth Stibate Pyrochlore

Chemistry
Complex antimony pyrochlores Bi2.7M0.46Ni0.70Sb2O10+Δ (M = Zn, Mg) were synthesized from oxide precursors, using the solid-state reaction method.
Nadezhda A. Zhuk, Sergey V. Nekipelov, Olga V. Petrova, Boris A. Makeev, Sergey I. Isaenko, Maria G. Krzhizhanovskaya, Kristina N. Parshukova, Roman I. Korolev, Ruslana A. Simpeleva   +8 more
doaj   +1 more source