Results 111 to 120 of about 17,348 (202)

Tuning properties through disorder: structural, optical, and mechanical insights into novel medium-entropy rare-earth hafnate pyrochlores

Materials Research Express
Entropy-stabilized oxides find application in several areas due to their interesting properties which comes from the four core attributes—entropy-stabilization effect, severe lattice distortion effect, sluggish diffusion effect and cocktail effect.
Gaius Cherian Mathew, Shijo Thomas
doaj   +1 more source

Weyl semimetal from spontaneous inversion symmetry breaking in pyrochlore oxides

, 2015
We study the electronic properties of strongly spin-orbit coupled electrons on the elastic pyrochlore lattice. Akin to the Peierls transition in one-dimensional systems, the coupling of the lattice to the electronic degrees of freedom can stabilize a ...
Bzdušek, Tomáš, Rüegg, Andreas, Sigrist, Manfred   +2 more
core   +1 more source

Monte Carlo study of the discontinuous quantum phase transition in the transverse-field Ising model on the pyrochlore lattice

, 2018
The antiferromagnetic Ising model on the pyrochlore lattice exhibits a quantum phase transition in an applied transverse field from the low-field quantum spin-ice phase to the high-field polarized regime.
Emonts, Patrick, Wessel, Stefan
core   +1 more source

Magnetic susceptibility of diluted pyrochlore and SCGO antiferromagnets

, 1999
We investigate the magnetic susceptibility of the classical Heisenberg antiferromagnet with nearest-neighbour interactions on the geometrically frustrated pyrochlore lattice, for a pure system and in the presence of dilution with nonmagnetic ions.
A. B. Harris, A. J. Berlinsky, A. P. Ramirez, A. P. Ramirez, A. P. Ramirez, A. P. Ramirez, B. D. Gaulin, D. A. Garanin, D. L. Huber, E. F. Shender, E. F. Shender, J. N. Reimers, J. S. Gardner, J. Spalek, J. Villain, M. J. Harris, M. J. Harris, M. J. P. Gingras, M. P. Zinkin, P. Schiffer, P. Schiffer, P. Schiffer, P. W. Anderson, R. Ballou, R. Moessner, R. Moessner, R. Moessner, R. Moessner, S. R. Dunsiger, S. T. Bramwell, Y. Shimakawa   +30 more
core   +1 more source

Structural determination of new solid solutions [Y2-x Mx ][Sn2-x Mx ]O7-3x/2 (M = Mg or Zn) by Rietveld method [PDF]

Processing and Application of Ceramics, 2010
New [Y2-x Mx][Sn2-x Mx]O7-3x/2 (0 ≤x≤ 0.30 for M = Mg and 0 ≤x≤ 0.36 for M = Zn) solid solutions with the pyrochlore structure were synthesized via high-temperature solid-state reaction method.
Mohamed Douma, El Hossain Chtoun, Raquel Trujillano, Vicente Rives   +3 more
doaj  

Weak magnetic transitions in pyrochlore Bi2Ir2O7

, 2013
Muon spin relaxation measurements on Bi2Ir2O7 show that it undergoes a bulk magnetic transition at 1.84(3) K. This is accompanied by increases in the muon spin relaxation rate and the amplitude of the non-relaxing part of the signal. The magnetic field experienced by muons is estimated to be 0.7 mT at low-temperature, around two orders of magnitude ...
Baker, P.J., Möller, J.S., Pratt, F.L., Hayes, W., Blundell, S.J., Lancaster, T., Qi, T.F., Cao, G.   +7 more
openaire   +3 more sources

Dielectric dispersion in Bi3Zn2Sb3O14 ceramic: a pyrochlore type phase

Materials Research, 2003
The electric and dielectric properties of Bi3Zn2Sb3O14 ceramic were studied by impedance spectroscopy. The measurements were performed in the frequency range 5 to 13 MHz and at temperature ranges from 25 to 700 degreesC.
Lanfredi Silvania, Nobre Marcos A. de Lima   +1 more
doaj  

U-Pb dating of niobium minerals from the pyrochlore group (Ilmeny-Vishnevogorsky carbonatite-miaskite complex, South Urals)

Литосфера, 2020
The article covers the U-Pb dating of minerals belonging to the pyrochlore group from the rare-metal ore deposits of Ilmeny-Vishnevogorsky carbonatite-miaskite complex (South Urals). Individual pyrochlore crystals were dated through a new technique of in-
I. L. Nedosekova, V. A. Koroteev, B. V. Belyatsky, V. V. Sharygin, Е. N. Lepechinа, S. V. Pribavkin   +5 more
doaj  

Dry Reforming of Methane over Pyrochlore-Type La₂Ce₂O₇-Supported Ni Catalyst: Effect of Particle Size of Support

Molecules
The properties of supports (such as oxygen vacancies, oxygen species properties, etc.) significantly impact the anti-carbon ability due to their promotional effect on the activation of CO2 in dry reforming of methane (DRM).
Zeling Zhou, Chao Li, Junfeng Zhang, Qiliang Gao, Jiahao Wang, Qingde Zhang, Yizhuo Han   +6 more
doaj   +1 more source

FROM THE HISTORY OF OPENING AND DEVELOPMENT ORE RICHES OF THE CHERRY MOUNTAINS IN THE URALS [PDF]

Минералогия, 2017
The main stages of exploration of mineral deposits and the contribution of many researchers to the study of geology and mineralogy of the Vishnevy Mountains in the Urals are considered.
V.I. Popova, S.N. Nikandrov
doaj