Results 61 to 70 of about 4,273 (189)

High Efficiencies in Gd2Ru2O7 Pyrochlore Oxide Photoanode‐Based Dye‐Sensitized Solar Cells Using Natural Dyes From Anacardium, Baphia nitida, and Lannea kerstingii Barks

open access: yesProgress in Photovoltaics: Research and Applications, EarlyView.
High performance of Gd2Ru2O7‐based natural dye‐sensitized solar cell using three different dyes (Anacardium, B. nitida, and Lannea kerstingii barks) has been developed. Enhanced energy conversion efficiency values were obtained compared to classical TiO2 P25‐based DSSC. ABSTRACT Natural dye‐sensitized solar cells (DSSC‐N), inspired by the principles of
A. F. Kraidy   +7 more
wiley   +1 more source

Depleted pyrochlore antiferromagnets

open access: yesJournal of Physics: Conference Series, 2009
I consider the class of "depleted pyrochlore" lattices of corner-sharing triangles, made by removing spins from a pyrochlore lattice such that every tetrahedron loses exactly one. Previously known examples are the "hyperkagome" and "kagome staircase".
openaire   +2 more sources

Sublattice pairing in pyrochlore Heisenberg antiferromagnets

open access: yesPhysical Review B, 2023
We argue that classical pyrochlore Heisenberg antiferromagnets with small further-neighbor couplings can order in a state where pairs of sublattices form antiparallel spirals. The spiral ordering wave vectors of the two pairs are in general different from each other, and are constrained by which sublattices are being paired.
Cecilie Glittum, Olav F. Syljuåsen
openaire   +3 more sources

Novel Non‐Equimolar High‐Entropy Zirconates With Superior Thermophysical Properties

open access: yesRare Metals, EarlyView.
ABSTRACT Rare‐earth zirconates (RE2Zr2O7) are promising candidates for topcoat materials in thermal barrier coatings (TBCs). However, their practical application in TBCs is limited by poor fracture toughness and low thermal expansion coefficient (TEC).
Taoyi Lu   +7 more
wiley   +1 more source

Direct Evidence of Topological Dirac Fermions in a Low Carrier Density Correlated 5d Oxide

open access: yesAdvanced Functional Materials, Volume 36, Issue 13, 12 February 2026.
The 5d oxide BiRe2O6 is discovered as a low‐carrier‐density topological semimetal hosting symmetry‐protected Dirac fermions stabilized by nonsymmorphic symmetries. Angle‐resolved photoemission spectroscopy, quantum oscillations, and magnetotransport measurements reveal gapless Dirac cones, quasi‐2D Fermi surfaces, high carrier mobility, and a field ...
Premakumar Yanda   +11 more
wiley   +1 more source

Structure existence areas for complex oxides of perovskite-like structural families

open access: yesJournal of Advanced Dielectrics
Constructed existence areas of different oxygen–octahedral structures of complex oxides are considered and compared. They are found on numerous facts of certain complex oxide compositions of three different structure types: successful and not-so ...
G. A. Geguzina, I. G. Popova
doaj   +1 more source

Anomalous Hall Effect in Geometrically Frustrated Magnets

open access: yesAdvances in Condensed Matter Physics, 2012
Geometrically frustrated conducting magnets display extraordinarily large anomalous Hall effects (AHEs) that could be used to realise materials required for the emerging field of spintronics.
D. Boldrin, A. S. Wills
doaj   +1 more source

The Structure, Property, and Ion Irradiation Effects of Pyrochlores: A Comprehensive Review

open access: yesCrystals, 2023
Since the beginning of the use of nuclear energy, humans have been faced with the problem of radionuclide disposal. At present, a large amount of waste is stored in pools or dry tanks at reactor sites. With the development of the nuclear power generation
Yuhao Wang   +8 more
doaj   +1 more source

A single crystal high-temperature pyrochlore antiferromagnet

open access: yes, 2014
We report the magnetic characterization of the frustrated transition metal pyrochlore NaCaCo$_2$F$_7$. This material has high spin Co$^{2+}$ in CoF$_6$ octahedra in a pyrochlore lattice, and disordered non-magnetic Na and Ca on the large-atom sites in ...
Cava, R. J., Krizan, J. W.
core   +1 more source

Assessing the Long‐Term Aqueous Durability and Structural Stability of Pyrochlore (Gd2Ti2O7) and Glass‐Pyrochlore (Fe‐Al‐BG‐Gd2Ti2O7) Composite Materials

open access: yesSurface and Interface Analysis, Volume 58, Issue 2, Page 71-88, February 2026.
ABSTRACT Understanding the corrosion behavior of glass–ceramic composite materials such as Fe‐Al‐BG‐Gd2Ti2O7 as potential nuclear wasteform candidates has attracted considerable attention due to their high loading of actinide elements and fission products compared to current borosilicate glass nuclear wasteforms.
Mehrnaz Mikhchian, Andrew P. Grosvenor
wiley   +1 more source

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