Results 11 to 20 of about 16,793 (198)

Petrogenetic Implications for Ophiolite Ultramafic Bodies from Lokris and Beotia (Central Greece) Based on Chemistry of Their Cr-spinels

open access: yesGeosciences, 2017
Cr-spinels from ultramafic rocks from Lokris (Megaplatanos and Tragana), and Beotia (Ypato and Alyki) ophiolitic occurrences were studied. These rocks comprise principally harzburgite with minor dunite. Small amounts of clinopyroxene-rich harzburgite and
Panagiotis Pomonis, Andreas Magganas
doaj   +1 more source

Synthesis of (Cu,Mn,Co)3O4 Spinel: Effects of Citrate-to-Nitrate Ratio on Its Homogeneity and Electrical Properties

open access: yesEnergies, 2023
The (Cu,Mn,Co)3O4 (CMC) spinel layer is useful in inhibiting Cr vaporization that deteriorates the solid oxide fuel cell performance. The effectiveness of the spinel layer in suppressing volatile Cr species from the metallic interconnects is strongly ...
Joelle C. W. Mah   +4 more
doaj   +1 more source

Ab-initio computations of CaV2S4 and CaMn2S4 spinels for spintronics and energy storage system applications

open access: yesJournal of Materials Research and Technology, 2020
Having ferromagnetism capabilities and energy storage capacity, CaV2S4 and CaMn2S4 spinels are interesting materials owing to their potential applications in spintronics applications.
Asif Mahmood   +4 more
doaj   +1 more source

Use of dilatometer to screen refractory raw materials

open access: yesInternational Journal of Ceramic Engineering & Science, 2022
Sudden shortage of a particular raw material due to freight disruptions, competitive market, and COVID restrictions have frequently forced the refractory industry to rapidly develop alternative formulations using available low‐cost materials.
Somnath Mandal, Manoj K. Mahapatra
doaj   +1 more source

MINERALOGY AND GENESIS OF ULTRAMAFIC ROCKS FROM THE KURTUSHIBA OPHIOLITE BELT (WESTERN SAYAN) [PDF]

open access: yesМинералогия, 2022
The studies of minerals and melt inclusions in ultramafic rocks of the Kurtushiba ophiolite belt (Western Sayan) allowed us to establish the conditions of mineral-forming processes during their formation.
V.A. Simonov   +2 more
doaj   +1 more source

Probing magnetic order in EELS of chromite spinels using both multiple scattering (FEFF8.2) and DFT (WIEN2k) [PDF]

open access: yes, 2010
The electron energy loss near edge structure on the O K-edge from chromite spinels contains fine structure from the hybridisation of the O p-orbitals and the Cr d-orbitals.
A.J. Craven   +30 more
core   +1 more source

Thermochemistry of MgCr2O4, MgAl2O4, MgFe2O4 spinels in SO2-O2-SO3 atmosphere [PDF]

open access: yesProcessing and Application of Ceramics, 2016
The present paper investigates high-temperature sulphate corrosion of basic refractory ceramics containing magnesium spinels (MgAl2O4, MgFe2O4, MgCr2O4 and their solid solutions) widely used in metallurgy, chemical, ceramic and glass industry. This group
Anna Gerle   +2 more
doaj   +1 more source

Tailoring of Magnesium Substitution on Structure and Magnetic Properties of Lithium Ferrites

open access: yesФізика і хімія твердого тіла, 2021
In this study is reported influence of Mg2+ doping on structure and magnetic properties of nano-sized Li0.5Fe2.5-XMgXO4 (0.0, 0.2, 0.4, 0.6, 0.8) synthesized using sol-gel auto-combustion method.
Julia Mazurenko
doaj   +1 more source

the origin of Abgarm ultramafic complex (South of Kerman province) [PDF]

open access: yesپترولوژی, 2020
Abgarm ultramafic complex in the south of Kerman province is a part of Esfandagheh- Haji Abad ophiolite which is located in the northern edge of Zagros thrust. The complex contains harzburgites, lherzolites, dunites, and chromitites.
Raziyeh Alipour   +2 more
doaj   +1 more source

Jedi Spinel from Man Sin, Myanmar: Color, Inclusion, and Chemical Features

open access: yesCrystals, 2023
In the present study, we collected and investigated spinels from the Man Sin deposit in Myanmar using standard gemological testing, microscopic observation, EDXRF, and Raman spectrometry.
Yujie Gao   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy