Results 71 to 80 of about 17,348 (202)
Cluster-glass phase in pyrochlore XY antiferromagnets with quenched disorder
, 2018 We study the impact of quenched disorder (random exchange couplings or site dilution) on easy-plane pyrochlore antiferromagnets. In the clean system, order-by-disorder selects a magnetically ordered state from a classically degenerate manifold.
Andrade, Eric C. +3 more
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Pyrochlore-Supergroup Minerals Nomenclature: An Update [PDF]
Frontiers in Chemistry, 2021 The general formula of the pyrochlore-supergroup minerals is A2B2X6Y. The mineral names are composed of two prefixes and one root name (identical to the name of the group). The first prefix refers to the dominant anion (or cation or H2O or vacancy) of the dominant valence at the Y-site.
openaire +3 more sources
Surface 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
ChemistryComplex antimony pyrochlores Bi2.7M0.46Ni0.70Sb2O10+Δ (M = Zn, Mg) were synthesized from oxide precursors, using the solid-state reaction method.
Nadezhda A. Zhuk +8 more
doaj +1 more source
Pyrochlore Antiferromagnet: A Three-Dimensional Quantum Spin Liquid
, 1998 The quantum pyrochlore antiferromagnet is studied by perturbative expansions and exact diagonalization of small clusters. We find that the ground state is a spin-liquid state: The spin-spin correlation functions decay exponentially with distance and the ...
A. B. Harris +25 more
core +1 more source
Weyl magnons in breathing pyrochlore antiferromagnets [PDF]
Nature Communications, 2016 AbstractFrustrated quantum magnets not only provide exotic ground states and unusual magnetic structures, but also support unconventional excitations in many cases. Using a physically relevant spin model for a breathing pyrochlore lattice, we discuss the presence of topological linear band crossings of magnons in antiferromagnets.
Fei-Ye Li +5 more
openaire +4 more sources
Small Structures, Volume 7, Issue 2, February 2026.Using high‐throughput synthesis and characterization techniques to significantly improve activation and stabilization of LaNiO3 for the oxygen evolution reaction in acidic conditions by substitution of the Ni (B site cation) with three other cations, namely, Mo, W, and Mn, that expand the crystal lattice structure.
Nophar Tubul Levy +5 more
wiley +1 more source
Ground State Phase Diagram of Generic XY Pyrochlore Magnets with Quantum Fluctuations
, 2013 Motivated by recent experimental and theoretical progress on the Er2Ti2O7 pyrochlore XY antiferromagnet, we study the problem of quantum order-by-disorder in pyrochlore XY systems. We consider the most general nearest-neighbor pseudo spin-1/2 Hamiltonian
Gingras, Michel J. P. +2 more
core +1 more source
Degeneracy and Strong Fluctuation-Induced First-Order Phase Transition in the Dipolar Pyrochlore Antiferromagnet [PDF]
, 2005 We show that a continuous set of degenerate critical soft modes strongly enhances the first-order character of a fluctuation-induced first-order transition in the pyrochlore dipolar Heisenberg antiferromagnet. Such a degeneracy seems essential to explain
A. P. Young +6 more
core +2 more sources
Heat Capacity Measurements and Thermodynamic Assessment of the Y2O3–Ta2O5 System
Journal of the American Ceramic Society, Volume 109, Issue 2, February 2026.ABSTRACT Phase equilibria in the Y2O3–Ta2O5 system play an important role in the development of new materials for thermal barrier coating (TBC) applications, with higher thermal stability resulting in more efficient gas turbines with reduced exhaust gas emissions.
M. Löffler +4 more
wiley +1 more source