Results 121 to 130 of about 4,273 (189)

Search for solid conductors of Na(+) and K(+) ions: Five new conductors [PDF]

open access: yes
Five conductors of three structure types were discovered which, as solids, can transport Na(+) or K(+) ions with conductivities of approximately .00001/(omega cm) at 300 K.
Fielder, W. L.   +3 more
core   +1 more source

XPS and NEXAFS Characterization of Mg/Zn and Mn Codoped Bismuth Tantalate Pyrochlores

open access: yesInorganics
Two series of the bismuth tantalate pyrochlore samples, codoped with Mg,Mn and Zn,Mn, were synthesized via solid-phase reaction. It was established that the Bi2Mg(Zn)xMn1−xTa2O9.5−Δ (x = 0.3; 0.5; 0.7) samples contain the main phase of cubic pyrochlore ...
Nadezhda A. Zhuk   +6 more
doaj   +1 more source

NEXAFS and XPS Studies of Co Doped Bismuth Magnesium Tantalate Pyrochlores

open access: yesChemistry
Co doped bismuth magnesium tantalate with a pyrochlore structure (sp. gr. Fd-3m) was synthesized for the first time using the standard ceramic method. Single phase Bi2Mg1−xCoxTa2O9 samples were found to be formed when x < 0.7 in the X-ray phase analysis.
Nadezhda A. Zhuk   +4 more
doaj   +1 more source

Metal-insulator transitions in pyrochlore oxides

open access: yesReports on Progress in Physics
Abstract Pyrochlore oxides with chemical formula of A 2 B 2
Yoshinori Tokura   +2 more
openaire   +3 more sources

Tuning Frustrated Pyrochlores

open access: yes, 2019
Structural studies have been conducted on a series of β-pyrochlore materials using primarily X-ray and powder neutron diffraction techniques. Mössbauer Spectroscopy and\ud SQUID (Superconducting Quantum Interference Device) magnetometer measurements\ud have also been performed to determine the oxidation states of Fe and the magnetic\ud behaviour of ...
openaire  

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