Results 81 to 90 of about 17,445 (204)

Structural Determination, Oxygen Diffusion, and Storage Capacity of a High‐Entropy Fluorite‐Type Oxidation Catalyst

Small Structures, Volume 7, Issue 3, March 2026.
Inducing cationic high entropy on CeO2 modifies the structure, leading to increased oxygen diffusion and resistance to sintering. In turn, this leads to enhanced oxygen storage capacities without degradation, showing potential for oxidation catalysis.
Yuvraj Vaishnav, Mohamad Abou‐Daher, Cristina I.Q. Silva, Rohit K. Rai, Walid Al Maksoud, Marcell Toth, M. Viswanathan, Peng Ren, Fumitaka Takeiri, Shusaku Hayama, Samy Ould‐Chikh, Mohamed Nejib Hedhili, Maxim Avdeev, Wen Yin, Saburo Hosokawa, Genki Kobayashi, Isaac Abrahams, Aamir Farooq, Javier Ruiz‐Martinez, Yoji Kobayashi   +19 more
wiley   +1 more source

Phase competition in the double-exchange model on the frustrated pyrochlore lattice

, 2010
Competition between the ferromagnetic double-exchange interaction and the super-exchange antiferromagnetic interaction is theoretically studied in the presence of geometrical frustration.
Furukawa, Nobuo, Motome, Yukitoshi
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, E. F. Shender, Hirokazu Tsunetsugu, J. Villain, M. E. Zhitomirsky, M. Schick, R. J. Baxter   +6 more
core   +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, Yong Hao Gao, Chunxiao Liu, Gang Chen   +3 more
doaj   +1 more source

Borehole Logging Lithological Classification in Carbonatite‐Hosted Niobium Deposit Integrating Geophysical and Geochemical Data With Self‐Organizing Maps

Geophysical Prospecting, Volume 74, Issue 3, March 2026.
ABSTRACT Lithological classification from borehole data remains challenging in geologically complex alkaline–carbonatite systems, where compositional overlap and gradual transitions between lithotypes limit conventional interpretation methods. This study presents an integrated and automated workflow for drill‐core lithological classification using self‐
Fabrizzio R. Costa, Lívia Namie S. Nishimura, Reginaldo Antonio R. Filho, Bruno P. Milanezi, Dong Yaosong, Cleyton de C. Carneiro, Carina Ulsen   +6 more
wiley   +1 more source

Crystal Chemistry and Magnetic Properties of Manganese Zinc Alloy "YMn2Zn20" Comprising a Mn Pyrochlore Lattice

, 2012
The chemical composition, crystal structure, and magnetic properties of a manganese zinc alloy with an ideal composition of YMn2Zn20, which comprises a pyrochlore lattice made of Mn atoms, are reported.
Benbow, Gross, Jia, Jia, Jia, Jun-ichi Yamaura, Kondo, Kripyakevich, Lacroix, Müller, Nakamura, Nakamura, Nasch, Niemann, Okamoto, Okuda, Onimaru, Takeshi Shimizu, Thiede, Torikachvili, Wada, Yoshihiko Okamoto, Zenji Hiroi   +22 more
core   +1 more source

NEXAFS and XPS Studies of Co Doped Bismuth Magnesium Tantalate Pyrochlores

Chemistry
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, Boris A. Makeev, Aleksandra V. Koroleva, Sergey V. Nekipelov, Olga V. Petrova   +4 more
doaj   +1 more source

Ultra‐Rapid Blacklight Sintering for ZnO‐Based Varistors With Optimized Functional Properties

Journal of the American Ceramic Society, Volume 109, Issue 3, March 2026.
ABSTRACT The increasing demand for energy‐efficient optoelectronic systems has intensified interest in high‐performance ceramic varistors, which are critical components in surge protection applications. In this study, ZnO‐based varistors were fabricated using a novel blacklight sintering (BLS) technique, which employs high‐powered blue light, and were ...
Ahmad Sayyadi‐Shahraki, Michael Scherer, Lukas Porz, Mohammad Maleki Shahraki, Till Frömling   +4 more
wiley   +1 more source

Effect of excess Mg and Excess Nb incorporation into the B-site of pyrochlore in the Pb-Mg-Nb-O system

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  

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

Advanced 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, Jorge Cardenas‐Gamboa, Ding Pei, François Bertran, Leila Noohinejad, Snehashish Chatterjee, Changjiang Yi, Iñigo Robredo, Horst Borrmann, Maia G. Vergniory, Chandra Shekhar, Claudia Felser   +11 more
wiley   +1 more source