Results 11 to 20 of about 17,395 (155)
Trace element partitioning between pyrochlore, microlite, fersmite and silicate melts
Geochemical Transactions, 2020 We present experimentally determined trace element partition coefficients (D) between pyrochlore-group minerals (Ca2(Nb,Ta)2O6(O,F)), Ca fersmite (CaNb2O6), and silicate melts.
Stephan Klemme, Jasper Berndt
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Structural Stability of Pyrochlore Manganate In2Mn2O7 Under High Pressure
Frontiers in Physics, 2021 The pyrochlore manganate In2Mn2O7 is a very promising ferromagnetic semiconductor material, which has a good application prospect in spin transport due to its very low electron effective mass, high Curie temperature, and structural stability.
Hui Li +4 more
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Synthesis and physical properties of pyrochlore cobalt oxides Bi1.56-xCaxSb1.48Co0.96O7-δ [PDF]
Cerâmica, 2023 A new solid solution Bi1.56-xCaxSb1.48Co0.96O7-δ (0≤x≤0.3) with a pyrochlore-like structure (A2B2O7) was synthesized in air by chemical solid-state reaction. The solution crystallized in the cubic system with the Fd-3m space group.
M. Sellami +6 more
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Microstructure and electrical properties of microwave sintered Nb-doped NBT ceramics [PDF]
Processing and Application of Ceramics, 2021 Nb5+-doped sodium bismuth titanate (NBT) ceramics ((Na0.5Bi0.5)1-x/2Ti1-xNbxO3 where x = 0, 0.005, 0.01 and 0.015) were obtained by microwave assisted solid state reaction route and microwave sintered at 1000 °C. Microwave processing technique was chosen
Sahu Rashmirekha, Kumar Pawan
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The second phase transition in the pyrochlore oxide Cd2Re2O7 [PDF]
, 2002 Evidence for another phase transition at 120 K in the metallic pyrochlore oxide Cd2Re2O7, following the structural transition at 200 K and followed by the superconducting transition at 1.0 K, is given through resistivity, magnetoresistance, specific heat,
Hanawa M. +4 more
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Heavily doped high-entropy A2B2O7 pyrochlore [PDF]
Processing and Application of Ceramics, 2023 A novel class of high-entropy pyrochlore compounds with multiple elements at the A and B site positions (A2B2O7) was successfully obtained. Powders with (La1/7Sm1/7Nd1/7Pr1/7Y1/7Gd1/7Yb1/7)2(Sn1/3Hf1/3Zr1/3)2O7 nominal composition were fabricated from ...
Matović Branko +6 more
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New beta-Pyrochlore Oxide Superconductor CsOs2O6 [PDF]
, 2004 The discovery of a new beta-pyrochlore oxide superconductor CsOs2O6 with Tc = 3.3 K is reported. It is the third superconductor in the family of beta-pyrochlore oxides, following KOs2O6 with Tc = 9.6 K and RbOs2O6 with Tc = 6.3 K.
Hanawa M. +7 more
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Phase formation on the surface of lead ferroniobate depending on the conditions of mechanochemical synthesis and sintering [PDF]
Science of Sintering, 2016 The perovskite structure is formed at lower temperatures with an increase in the time of preliminary activation. It is demonstrated that thermal treatment of mechanically activated for 25 minutes mixture composed of niobium oxide, lithium ...
Gusev Aleksey Alekseevich +3 more
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Molecules, 2020 Structural evolution in functional materials is a physicochemical phenomenon, which is important from a fundamental study point of view and for its applications in magnetism, catalysis, and nuclear waste immobilization.
Madhab Pokhrel +5 more
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XPS and NEXAFS Studies of Zn-Doped Bismuth Iron Tantalate Pyrochlore
Inorganics, 2023 The effect of Zn-doping on the phase composition and optical properties of the Bi2ZnxFe1-xTa2O9.5-Δ (x = 0.3, 0.5, 0.7) was studied. XRD data showed that the samples crystallize in the structural type of pyrochlore (sp. gr.Fd-3m). For all the samples, an
Sergey V. Nekipelov +7 more
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