Results 11 to 20 of about 119,992 (349)

Sol-gel as a method to tailor the magnetic properties of Co1+yAl2-yO4 [PDF]

open access: yesScience of Sintering, 2013
The magnetic properties of mesoscopic materials are modified by size and surface effects. We present a sol-gel method used to tailor these effects, and illustrate it on Co1+yAl2-yO4 spinel.
Milivojević D.   +8 more
doaj   +1 more source

Data for photoluminescence spectra of natural Cr3+-doped MgAl2O4 spinel during order-disorder transition

open access: yesData in Brief, 2020
Photoluminescence (PL) spectra of natural Cr3+ doped MgAl2O4 spinel from Tanzania were taken during its order-disorder transition (ODT) process. Samples were changed their disordered degree by quenching treatment.
Chengsi Wang, Andy H. Shen, Yungui Liu
doaj   +1 more source

Mechanical Behavior of Transparent Spinel Fabricated by Spark Plasma Sintering

open access: yesCeramics, 2023
In this work, a transparent nanostructured ceramic magnesium aluminate spinel (MgAl2O4) was fabricated by Spark Plasma Sintering (SPS) from commercial spinel nano-powders at different temperatures (1300, 1350 and 1400 °C).
Khadidja Hoggas   +6 more
doaj   +1 more source

Cluster expansion of multicomponent ionic systems with controlled accuracy: Importance of long-range interactions in heterovalent ionic systems [PDF]

open access: yes, 2014
We have been examining factors determining the accuracy of cluster expansion (CE), which is used in combination with many density functional theory (DFT) calculations.
Seko, Atsuto, Tanaka, Isao
core   +2 more sources

Mössbauer characterisations and magnetic properties of iron cobaltites CoxFe3−xO4 (1 ≤ x ≤ 2.46) before and after spinodal decomposition [PDF]

open access: yes, 2013
Iron cobaltite powders CoxFe3_xO4 (1 ≤ x ≤ 2.46) were synthesized with compositions in between the cobalt errite CoFe2 O4 and Co2.46Fe0.54O4. The cationic distribution of pure spinel phases was determined by Mossbauer spectroscopy: as Co content ...
Barnabé, Antoine   +5 more
core   +4 more sources

Manganese ferrite thin films Part I: Preparation and structure [PDF]

open access: yes, 1972
The preparation of manganese ferrite thin films by the reactive evaporation of oxidic materials is reported. The process is not critical and provides homogeneous mirror-like films with spinel structure.
Berg, K.G. van den   +2 more
core   +2 more sources

Characterization Study of an Oxide Film Layer Produced under CO2/Steam Atmospheres on Two Different Maraging Steel Grades

open access: yesMetals, 2021
Currently, surface treatments lead to inducing a superficial layer of several nanometers up to micrometer, which in some cases can be protective.
Mauro Andres Cerra Florez   +7 more
doaj   +1 more source

Petrography and petrology of the Hawaii Scientific Drilling Project lavas: Inferences from olivine phenocryst abundances and compositions [PDF]

open access: yes, 1996
The Mauna Loa (ML) and Mauna Kea (MK) lavas recovered by the Hawaii Scientific Drilling Project (HSDP) include aphyric to highly olivine-phyric basalts.
Alves, Sophie   +2 more
core   +1 more source

Oxidation Behavior of Maraging 300 Alloy Exposed to Nitrogen/Water Vapor Atmosphere at 500 °C

open access: yesMetals, 2021
Aging heat treatments in maraging steels are fundamental to achieve the excellent mechanical properties required in several industries, i.e., nuclear, automotive, etc. In this research, samples of maraging 300 alloy were aged using a novel procedure that
Mauro Andres Cerra Florez   +7 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]

open access: yes, 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

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