Preparation and electrical properties of dense micro-cermets made of nickel ferrite and metallic copper [PDF]
, 2009 Dense micro-cermets made of nickel ferrites and copper micrometric particles were obtained from partial reduction under hydrogenated atmosphere at 350 C of mixed copper nickel ferrites, and sintering in nitrogen at 980 C.
Baco-Carles, Valérie +4 more
core +3 more sources
Mechanisms of electrical polarization of disordered systems based on Al-substituted LiFe-oxospinel
Фізика і хімія твердого тіла, 2021 The temperature-frequency dependences of the dielectric permittivity and conductivity of Li2O-Fe2O3-Al2O3 ceramics in the temperature range of 298-648 K were obtained by impedance spectroscopy.
A.V. Vakalyuk +3 more
doaj +1 more source
The formation of boundary clinopyroxenes and associated glass veins in type B1 CAIs [PDF]
, 2009 We used focused ion beam thin section preparation and scanning transmission electron microscopy (FIB/STEM) to examine the interfacial region between spinel and host melilite for spinel grains in type B1 inclusions from the Allende and Leoville ...
Abreu +83 more
core +1 more source
Synthesis of Spinel-Hydroxyapatite Composite Utilizing Bovine Bone and Beverage Can
Crystals, 2022 Spinel-based hydroxyapatite composite (SHC) has been synthesized utilizing bovine bones as the source of the hydroxyapatite (HAp) and beverage cans as the aluminum (Al) source.
Agus Pramono +3 more
doaj +1 more source
Structure and electrical properties of single-phase cobalt manganese oxide spinels Mn3xCoxO4 sintered classically and by spark plasma sintering(SPS) [PDF]
, 2009 Cobalt manganese oxide spinels Mn3 xCoxO4 (with 0.98pxp3) were prepared by the thermal decomposition in air of oxalate precursors. The influence of the thermal treatments on the structure of these materials is emphasized.
Bordeneuve, Hélène +4 more
core +2 more sources
Novel Nanosized Spinel MnCoFeO4 for Low-Temperature Hydrocarbon Oxidation
Nanomaterials, 2022 The present paper reports on MnCoFeO4 spinels with peculiar composition and their catalytic behavior in the reactions of complete oxidation of hydrocarbons. The samples were synthesized by solution combustion method with sucrose and citric acid as fuels.
Vencislav Tumbalev +6 more
doaj +1 more source
First-principles study of possible shallow donors in ZnAl2O4 spinel [PDF]
, 2013 ZnAl2O4 (gahnite) is a ceramic which is considered a possible transparent conducting oxide (TCO) due to its wide band gap and transparency for UV. Defects play an important role in controlling the conductivity of a TCO material along with the dopant ...
Cottenier, Stefaan +5 more
core +1 more source
Cordierite-spinel-quartz assemblages: A potential geobarometer [PDF]
Bulletin of the Geological Society of Finland, 1986 The composition of (Mg-Zn-Fe+2)-aluminate-spinel coexisting with cordierite and quartz is potentially a sensitive geobarometer in rock types such as cordierite ‒ anthophyllite rocks which are not well suited to most other geobarometers.
F. Seifert, J.C. Schumacher
doaj +1 more source
Ultramafic xenoliths from the Bearpaw Mountains, Montana, USA: evidence for multiple metasomatic events in the lithospheric mantle beneath the Wyoming craton [PDF]
, 2004 Ultramafic xenoliths in Eocene minettes of the Bearpaw Mountains volcanic field (Montana, USA), derived from the lower lithosphere of the Wyoming craton, can be divided based on textural criteria into tectonite and cumulate groups. The tectonites consist
Abidin, M.S.Z. +11 more
core +2 more sources
Electronic structure and physical properties of the spinel-type phase of BeP2N4 from all-electron density functional calculations [PDF]
, 2011 Using density-functional-theory-based ab initio methods, the electronic structure and physical properties of the newly synthesized nitride BeP2N4 with a phenakite-type structure and the predicted high-pressure spinel phase of BeP2N4 are studied in detail.
B. Delley +7 more
core +1 more source