Magnetoelectric (NiFe2O4) 0.3−(Sr0.5Ba0.5Nb2O6)0.7 composites with addition of LiNbO 3 as sintering additive were prepared by a classical mixed-oxide method. XRD patterns of ceramics sintered between 1000 and 1200 • C show the desired Sr 0.5 Ba 0.5 Nb 2 O 6 and NiFe 2 O 4 phases. SEM investigations confirm the 0-3 connectivity of the composite cera...
International audience
In this study possible routes from dissolved M and C atoms to a M-C (M = Ti, Nb) cluster are studied. Using atomistic modelling to perform relaxation simulations and molecular dynamics (MD) simulations for the Fe-M-C ternary system, the formation of clusters is studied for M. Additionally the stability of M-C clusters is assessed. The clustering of...
This master thesis presents a theoretical investigation of the energy and stability of interfaces in iron-carbide compounds, specifically focusing on the α-Fe/Cr7C3 system. The study aims to fill the gap in knowledge regarding the surface energetics of these interfaces using Density Functional Theory (DFT). Six different α-Fe/Cr7C3 interfaceswere c...
Published in Journal of Physics: Conference Series
A comparison between using NaOH and NH4OH for synthesizing nano Ni0.1Ba0.9Fe2O4 via autocombustion method was done. During the preparation of the two samples, metal salts were dissolved in distilled water and then the two chemical bases were added separately till pH reaches 7.5. The samples were fired at 600°C for 2h. X-ray diffraction (XRD), Fouri...
status: published
Published in Waste management (New York, N.Y.)
A new method for recovering metals from ferritic stainless steel pickling sludge using municipal sludge as a reducing agent is proposed. The effects of temperature, municipal sludge blending ratio, and reaction atmosphere on the recovery characteristics were studied. The migration characteristics of heavy metals (HMs) at different temperatures were...
Joule heating is widely used during the different thermal treatments and material forming processes in metallurgy. Until recently, thermal treatments assisted by electric current were considered equivalent to conventional heating methods. However, the evolution of the microstructure in presence of electric current is still not well understood. The ...
International audience
The magnetic tunability of ferrites has been studied and applied on many electric components for working in various frequency bands. Filters or resonators loaded by ferrites can thus work for different frequency requirements by tunning external biasing field. However, filters or resonators built by traditional waveguides are large in size. And for ...
