Results 51 to 60 of about 16,793 (198)

Cooperative orbital ordering and Peierls instability in the checkerboard lattice with doubly degenerate orbitals

, 2010
It has been suggested that the metal-insulator transitions in a number of spinel materials with partially-filled t_2g d-orbitals can be explained as orbitally-driven Peierls instabilities.
D. Baeriswyl, H. Li, R. T. Clay, S. Mazumdar, S. Sarkar, T. Saha-Dasgupta, W. A. Harrison   +6 more
core   +1 more source

Orbital-Order Driven Ferroelectricity and Dipolar Relaxation Dynamics in Multiferroic GaMo$_4$S$_8$ [PDF]

, 2018
We present the results of broadband dielectric spectroscopy of GaMo$_4$S$_8$, a lacunar spinel system that recently was shown to exhibit non-canonical, orbitally-driven ferroelectricity.
Geirhos, K., Krohns, S., Kézsmárki, I., Lunkenheimer, P., Nakamura, H., Tabata, Y., Waki, T.   +6 more
core   +2 more sources

Magnetic properties of (Co, Ni, Mn)₃O₄ spinels

Boletín de la Sociedad Española de Cerámica y Vidrio, 2004
Magnetic properties of new materials, based on the general formula CoxNiyMnzO4 (x+y+z= 3), have been investigated as a function of magnetic field and temperature.
Durán, P., Peña, O., Bahout, M., Ma, Yanwei, Moure, C.   +4 more
doaj  

RELICTS OF THE PRIMARY MAGMATIC ACCESSORY SPINELS IN THE ARCHEAN KOMATIITES OF THE EASTERN FENNOSCANDIA

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
The article presents the results of a complex study of the relicts of the primary magmatic spinels from the Archean (3.0-2.7 Ga) komatiitic series of the greenstone structures of the eastern Fennoscandian Shield. The accessory minerals of the massive and
Зоя Павловна Рыбникова, Zoya Rybnikova   +1 more
doaj   +1 more source

Magnetic susceptibility of the frustrated spinels ZnCr2O4, MgCr2O4 and CdCr2O4

, 2009
We analyzed the magnetic susceptibilities of several Cr spinels using two recent models for the geometrically frustrated pyrochlore lattice, the Quantum Tetrahedral Mean Field model and a Generalized Constant Coupling model.
Deisenhofer, J., Kant, Ch., Loidl, A., Tsurkan, V.   +3 more
core   +1 more source

A petrological, mineralogical and chemical analysis of the lunar mare basalt meteorites LaPaz Icefield 02205, 02224 and 02226 [PDF]

, 2006
LaPaz Icefield (LAP) 02205, 02226, and 02224 are paired stones of a crystalline basaltic lunar meteorite with a low-Ti (3.21–3.43% TiO2) low-Al (9.93–10.45% Al2O3), and low-K (0.11–0.12% K2O) composition.
Anand, Anand, Anand, Anders, Arai, Asimow, Basaltic Volcanism Study Project., Bischoff, Borg, Cahill, Day, Dunkin, Dymek, Fagan, Fernandes, Ghiorso, Hiesinger, Jolliff, Jolliff, Korotev, Neal, Neal, Neal, Neal, Nielsen, Papike, Papike, Papike, Papike, Rankenburg, Righter, Rubin, Ryder, Stöffler, Synder, Thompson, Vaniman, Warren, Zeigler   +38 more
core   +1 more source

Pressure- and Field-Tuning the Magnetostructural Phases of Mn3O4: Raman Scattering and X-Ray Diffraction Studies

, 2011
We present temperature-, magnetic-field-, and pressure-dependent Raman scattering studies of single crystal Mn3O4, combined with temperature- and field-dependent x-ray diffraction studies, revealing the novel magnetostructural phases in Mn3O4.
Abbamonte, P., Budakian, R., Chen, X. M., Cooper, S. L., Kim, M., Nelson, C. S., Wang, X.   +6 more
core   +1 more source

Correlations of Calcination Temperature with the Catalytic Properties of CuFe2O4 for the Synthesis of Green Fuels

Advanced Energy & Sustainability Research
Spinel oxides are promising multifunctional electrocatalysts based on earth‐abundant elements. While NiFe2O4 and CoFe2O4 have been widely studied for the oxygen evolution reaction (OER), CuFe2O4 has been less investigated.
Judith Zander, Florian Daumann, Rameshwori Loukrakpam, Christina Roth, Birgit Weber, Roland Marschall   +5 more
doaj   +1 more source

New approach of recycling vanadium‐bearing slags as a binder in high‐alumina refractory castables application

International Journal of Ceramic Engineering & Science
Handling the massive quantities of by‐products from metallurgical processes has become a major concern in recent decades. Efforts to develop sustainable alternatives for these secondary resources are ongoing to achieve the transition to climate ...
Mathilda Derensy, Thomas Zanin, Jan‐Felix Bleck, Thorsten Tonnesen, Jesus Gonzalez‐Julian   +4 more
doaj   +1 more source

Provenance of synorogenic deposits of the Upper Cretaceous–Lower Palaeogene Jarmuta–Proč Formation (Pieniny Klippen Belt, Western Carpathians)

Geologica Carpathica, 2019
The Pieniny Klippen Belt contains thickening and coarsening upwards synorogenic sedimentary successions witnessing the collision of the Oravic ribbon continent with the Central Carpathian orogenic wedge after the closure of the Vahic Ocean in the Late ...
Madzin Jozef, Plašienka Dušan, Méres Štefan   +2 more
doaj   +1 more source