Results 81 to 90 of about 17,348 (202)
Journal of the American Ceramic Society, Volume 109, Issue 2, February 2026.Y2Ge2O7:Tm3+/Yb3+ phosphors synthesized via solid‐state method exhibit efficient blue and NIR upconversion luminescence under 980 nm excitation, enabled by cooperative energy transfer from Yb3+ to Tm3+. The system demonstrates excellent optical thermometry performance, achieving a maximum absolute sensitivity of 156.42 × 10−2 K−1 and relative ...
Basina Veera Naveen Kumar +2 more
wiley +1 more source
New Journal of Physics, 2022 Pyrochlores offer an ideal playground to investigate the magnetic ground state of frustrated magnetic systems. In this class of materials, competition between various magnetic interactions remains frustrated and prevents an ordered magnetic state at low ...
Karan Singh +3 more
doaj +1 more source
Topological thermal Hall effect of magnetic monopoles in the pyrochlore U(1) spin liquid
Physical Review Research, 2020 “Magnetic monopole” is an exotic quantum excitation in three-dimensional U(1) spin liquid, and its emergence is purely of quantum origin and has no classical analog.
Xiao-Tian Zhang +3 more
doaj +1 more source
Orbital ice: an exact Coulomb phase on the diamond lattice
, 2011 We demonstrate the existence of orbital Coulomb phase as the exact ground state of p-orbital exchange Hamiltonian on the diamond lattice. The Coulomb phase is an emergent state characterized by algebraic dipolar correlations and a gauge structure ...
Congjun Wu +2 more
core +1 more source
NEXAFS and XPS Studies of Co Doped Bismuth Magnesium Tantalate Pyrochlores
ChemistryCo 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
Pr$_2$Ir$_2$O$_7$: when Luttinger semimetal meets Melko-Hertog-Gingras spin ice state
, 2017 We study the band structure topology and engineering from the interplay between local moments and itinerant electrons in the context of pyrochlore iridates. For the metallic iridate Pr$_2$Ir$_2$O$_7$, the Ir $5d$ conduction electrons interact with the Pr
Chen, Gang, Yao, Xu Ping
core +1 more source
Lattice gas description of pyrochlore and checkerboard antiferromagnets in a strong magnetic field [PDF]
, 2007 Quantum Heisenberg antiferromagnets on pyrochlore and checkerboard lattices in a strong external magnetic field are mapped onto hard-core lattice gases with an extended exclusion region.
E. F. Shender +6 more
core +1 more source
Atomistic Insights into the Electrochemical Oxygen Evolution Activity of Hollandite IrO2 Surfaces
Advanced Science, Volume 13, Issue 6, 30 January 2026.Lattice distortions at tunnel‐structured hollandite IrO2 surfaces reshape Ir‐O bonding: they weaken the σ‐bond contribution in the Ir‐*OH bond while enhancing the π contribution of the Ir‐*O bond. This orbital reorganization in hollandite surfaces stabilizes *O, facilitates the *OH → O step, and lowers the oxygen‐evolution reaction overpotential ...
Sangseob Lee +3 more
wiley +1 more source
Boletín de la Sociedad Española de Cerámica y Vidrio, 2002 In the Pb-Mg-Nb-O system, excess Mg and excess Nb incorporation into the B-site of PMN pyrochlore were investigated along the compositons of Pb1.83Mg0.29+xNb1.71-xO6.39-1.5x where x=0.1, 0.2, 0.3, 0.4, 0.522 and Pb1.83Mg0.29-xNb1.71+xO6.39+1.5x where x=0.
Mergen, A.
doaj
High-entropy pyrochlores with low thermal conductivity for thermal barrier coating materials
Journal of Advanced Ceramics, 2019 High-entropy pyrochlore-type structures based on rare-earth zirconates are successfully produced by conventional solid-state reaction method. Six rare-earth oxides (La2O3, Nd2O3, Sm2O3, Eu2O3, Gd2O3, and Y2O3) and ZrO2 are used as the raw powders.
Fei Li +4 more
doaj +1 more source