M. MENASSEL Sihem

MCA

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Department

BASE COMMON ST Departement ST

Research Interests

physique des materiaux critallographie

Contact Info

University of M'Sila, Algeria

Email : sihem.menassel@univ-msila.dz

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Recent Publications

2024-11-17

Investigate of Al doped on Bi-2201 materials properties

The effect of Al substitution on copper sites in ceramic cuprates of the Bi2Sr2Ca0Cu1-xOyAlx system, where x = 0.0, 0.2, and 0.4, on the structural and superconducting properties has been examined. Undoped and Al-doped samples were synthesized using the traditional solid-state reaction technique. The samples were characterized structurally by means of X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectrometry. The electrical transport properties of the samples were analyzed in the temperature range between20–140 K . The superconducting transition temperature, Tc, was found to decrease with Al-doping.
Citation

M. MENASSEL Sihem, chetioui souheyla, , (2024-11-17), "Investigate of Al doped on Bi-2201 materials properties", [national] National Conference for Applied Sciences and Engineering , Alger, Algerie

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2024-07-19

Synthesis, structural analysis of new trans-Pd(O,N)2 complex derived from hydroxo-diazenyl-benzoate azo-ligand

Trans-Pd(O,N)2 with palladium acetate was synthesized by a one-pot procedure using the azo-dye derivative (E)-
methyl 2-((2-hydroxynaphthalen-1-yl)diazenyl)benzoate. FT-IR, UV-Vis, and CHN-elemental analysis were used to characterize
the complex, which was then modeled using theoretical MEP/MAC/NBA methods. Its structure was determined by x-ray
diffraction analysis of a single crystal and further investigated by DFT. Both XRD and DFT show that the deprotonated diazene
ligand binds the Pd(II) via the nitrogen atom and the oxygen of the phenolic ionic to form the neutral trans-Pd(O,N)2. The
geometry of the trans-Pd(O,N)2 complex is a slightly deformed square-plane. All of the complex’s oxygen atoms contribute to
hydrogen bonding, resulting in edge-fused rings R22(24) and R22 (12), where chains parallel matrix forms a three-dimensional
network. Hirshfeld surface analysis (HSA) revealed several hot points indicating the presence of several nonclassical [C-H....O]
hydrogen bonds.
Figure 2:
Citation

M. MENASSEL Sihem, (2024-07-19), "Synthesis, structural analysis of new trans-Pd(O,N)2 complex derived from hydroxo-diazenyl-benzoate azo-ligand", [international] 12th INTERNATIONAL CONFERENCE ON APPLIED ANALYSIS AND MATHEMATICAL MODELING (ICAAMM24)-Abstract Book, July 19-23, 2024, Istanbul-Turkey , Istanbul, Turquie

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2023-12-15

Study of the Semiconducting Behavior in Zr Doped Bi 2223 Ceramic

The effect of zirconium substitution on copper sites in ceramic cuprates of the Bi 2 Sr 2 Ca 2
xZrxCu 3 Oy system, where x 0.0 , 0.2 , and 0.4 , on the structural and superconducting properties
has been examined. Undoped and Zr doped samples were synthesized using the traditional solid
state reaction technique. The samples were characterized structurally by means of X ray
diffraction, scanning electron microscopy and energy dispersive X ray spectrometry. The electrical
transport properties of the samples were analyzed in the temperature range between 20 140 K. The
superconducting transition temperature, Tc, was found to decrease with Zr doping.
Citation

M. MENASSEL Sihem, (2023-12-15), "Study of the Semiconducting Behavior in Zr Doped Bi 2223 Ceramic", [international] 19 th SCF International Conference on “Institutional, Economic, And Technological Istanbul/Turkiye Detarminants of Energiy Of Energy Transition , Istanbul

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2023-11-27

Caracterisations physico-chimiques et étude cristallographique des materiaux hybrides

Azo compounds and their metal complexes are characterized by the presence in their structure of chromophore (-N=N-), their preparation is generally carried out by means of the classical reaction of diazotation/ copulation then complexation with a metal salt, the synthesized compounds were prepared, recrystallized then analyzed by the various usual IR spectrometric techniques, H1 NMR, C13 NMR, structural resolution and X-ray diffraction crystallography study.
Citation

M. MENASSEL Sihem, (2023-11-27), "Caracterisations physico-chimiques et étude cristallographique des materiaux hybrides", [international] 1ST International Conference on Physico-chemistry, Materials Sciences & Applied Mathematics (ICPMSAM’23) , Skikda

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2023-10-23

Experimental methods for the characterization of azo-metallic materials

Azo compounds are very important in the fields of dyes, pigments and advanced
materials. Azo dyes are synthetic colours that contain an azo group, as part of the
structure. We are involved in the color generation mechanism of azo pigments typically
characterized by the chromophore of the azo group (–N=N–). However, some types of
azo pigments are also known to possess the hydrazone structure (=N–NH–), often leading
to the formation of intramolecular hydrogen bonds. The azo– hydrazone tautomerism in
azo dyes has been known for more than a hundred years and is directly connected with
the presence of at least one protic donor group in conjugation to the azo bridge (2-
naphthol). In particular, azo dyes that contain a naphtholic hydroxyl group conjugated
with the azo linkage exist in aqueous solution as an equilibrium mixture of two chemically
distinct tautomers, the azo or hydrazone forms.
Recently, 1-phenylazo-2-naphthol derivatives have attracted attention because
the phenylazo-naphtholate group can provide N,O-bidentate chelation to stabilize
transition or main group metal complexes. Azo-metal chelates have also attracted
increasing attention due to their interesting electronic and geometrical features in
connection with their applications in molecular memory storage, non-linear optical
elements and printing systems. Another advantage of complexes involving azo DNO’s
(dyes and pigments) and transition metal ions is the possibility to obtain new compounds
with biological activity. Transition metals have also been used in the treatment of several
diseases, as metal complexes which are capable of cleaving DNA under physiological
conditions are of interest in the development of metal-based anticancer agents. This
is an impetus for chemists to develop innovative strategies for the preparation of more
effective, target-specific and preferably non-covalently bound anticancer drugs.
Citation

M. MENASSEL Sihem, (2023-10-23), "Experimental methods for the characterization of azo-metallic materials", [international] the 6th International Conference on the World of Technology and Advanced Materials “WITAM’23” in Batna (Algeria) on 23 and 24 October 2023 , Batna

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2023-10-09

Morphology and superconductivity studies of BSCCO with Sn doping

Superconducting Bi2Sr2Ca1-xSnxCu2O8 ceramics samples have been prepared by Sol-Gel methods using citrate process. The influences of the conditions of preparation of oxide powder compound on structural and superconducting properties have been investigated by X ray diffraction (XRD), Scanning Elec-tron Microscopy (SEM) equipped with EDS. The critical transition tempera-tures Tc have been determined by resistivity versus temperature measure-ments. Cell parameters samples were calculated from XRD patterns. The polyacryl amide gel makes the citrate process easier, more rapid and affords the possibility of synthesis of high quality oxide powders.
Citation

M. MENASSEL Sihem, (2023-10-09), "Morphology and superconductivity studies of BSCCO with Sn doping", [international] The 2 nd International Conference of Nanotechnology for Environmental Protection and Clean Energy Production, October 2023 Constantine, Algeria , Constantine

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2023-05-15

Investigation of Cr addition effect on structural, morphological, electrical and magnetic properties of Bi(Pb)-2212 superconductors

The main purpose of this research work will assess the effect of Cr addition on the properties of Bi1.8Pb0.4Sr2CaCu2O8?d superconducting ceramics. The samples are produced from industrial powders with different amounts of Cr (0, 1, 2, 3, 4, 5, 6 and 7 wt %) by sol–gel synthesis route. The influence of doping element has been determined by X-ray diffraction (XRD), scanning electron microscopy (SEM), electrical resistivity and magnetic characterizations. In particular, the eventual presence of secondary phases as a result of Cr doping on the undoped sample was investigated by using XRD. Bymeans of SEM analysis, the Cr doping influence on the grain morphology of the samples was explored. Contrarily, the Tc,on and the Tc,off of the samples have been obtained by using electrical resistivity measurements and their behavior as a function of the Cr doping has been discussed. Finally, by performing magnetization analysis versus temperature and magnetic field, the behavior of the critical temperature Tc and of the critical current density Jc as a proportion of the Cr concentration has been discussed.
Citation

M. MENASSEL Sihem, (2023-05-15), "Investigation of Cr addition effect on structural, morphological, electrical and magnetic properties of Bi(Pb)-2212 superconductors", [national] Journal of Materials Science: Materials in Electronics , SPRINGER

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2017

influence of Ag addition on superconducting properties of Bi2212

The main purpose of this research work is to investigate the effect of Ag addition on the properties of Bi1.8Pb0.4Sr2CaCu2O8+d superconducting ceramics. The samples are prepared from commercial powders with different amounts of Cr (0, 1, 2, 3, 4, 5 and 6 wt %) by sol-gel synthesis route. The influence of doping element has determined by, X-ray diffraction (XRD), scanning electron microscopy (SEM), electrical resistivity and magnetic characterizations. Using Bean’s model the maximum critical current density (Jc) is obtained when the Cr -doping content is x = 0.003 and hysteresis loops are increased with increasing doped concentrations. Some physical parameters are extracted from the magneto-resistivity curves and their evolutions with Cr content are discussed by a correlation between the different studies.
Citation

M. MENASSEL Sihem, (2017), "influence of Ag addition on superconducting properties of Bi2212", [international] international conference on advances in science and arts , ICASA’17 , Istanbul, Turquie

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2016

investigation of structural and superconducting properties of BiSrCa(Ti)CuO superconducting ceramics from sol-gel method

The main purpose of this research work is to investigate the effect of Ti addition on the properties of Bi1.8Pb0.4Sr2CaCu2O8+d superconducting ceramics. The samples are prepared from commercial powders with different amounts of Cr (0, 1, 2, 3, 4, 5 and 6 wt %) by sol-gel synthesis route. The influence of doping element has determined by, X-ray diffraction (XRD), scanning electron microscopy (SEM), electrical resistivity and magnetic characterizations. Using Bean’s model the maximum critical current density (Jc) is obtained when the Cr -doping content is x = 0.003 and hysteresis loops are increased with increasing doped concentrations. Some physical parameters are extracted from the magneto-resistivity curves and their evolutions with Cr content are discussed by a correlation between the different studies.
Citation

M. MENASSEL Sihem, (2016), "investigation of structural and superconducting properties of BiSrCa(Ti)CuO superconducting ceramics from sol-gel method", [international] 7th African conference on non destructive testing ACNDT 2016 and the 5th international conference on welding, Non Destructive Testing Materials and Alloys Industry IC-WNDT-MI’16 , Oran, Algeria

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synthesis of BiSrCa(Ti)CuO superconductor from the Sol-Gel method and the effect of Ti substitution

Superconducting Bi2Sr2Ca1-xTixCu2O8 ceramics samples have been prepared by Sol-Gel methods using citrate process. The influences of the conditions of preparation of oxide powder compound on structural and superconducting properties have been investigated by X ray diffraction (XRD), Scanning Electron Microscopy (SEM) equipped with EDS. The critical transition temperatures Tc have been determined by resistivity versus temperature measurements. Cell parameters samples were calculated from XRD patterns. The polyacryl amide gel makes the citrate process easier, more rapid and affords the possibility of synthesis of high quality oxide powders.
Citation

M. MENASSEL Sihem, (2016), "synthesis of BiSrCa(Ti)CuO superconductor from the Sol-Gel method and the effect of Ti substitution", [international] », international conference on advences in mechanical engineering , ICAME’16 , Istanbul, Turquie

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Microstructural and magneto-transport properties of Bi1.6Pb0.4Sr2Ca1-xGdxCu2O8+δ superconducting ceramics

This study aims to investigate the effect of Gd doping on the phase formation,
microstructure, transport and magnetic properties of the Bi(Pb)-2212 system. A series of
superconducting bulks with a nominal composition of Bi1.6Pb0.4Sr2Ca1-xGdxCu2O8+δ with x =
0, 0.05, 0.10 and 0.15 are synthesized by the solid state synthesis route. The formed samples
are characterized by means of X-ray diffraction analysis (XRD), scanning electron
microscopy (SEM), energy dispersive X-ray spectrometer (EDS), electrical transport and
magnetic measurements. The experiment results reveal that all the samples doped are
composed of Bi-2212 phase and traces of Bi-2201 secondary phase when compared to the
undoped sample. The refinement of cell parameters shows that the doping reduces the cell
volume of the samples. The texture degree decreases with doping while the degree of
orthorhombicity increases. Quantitative EDS analysis confirms that Gd atoms are successfully
introduced into crystalline structure. The SEM micrographs show randomly distributed grains
with a flake-like shape. The highest value of onset critical transition temperatures is obtained
for x = 0.10 and is about 90.22 K, which correlates well with the observed slope of resistivity
and the hole concentration of the CuO2 layers. Magnetic hysteresis loops suggest that the
diamagnetism, remanant magnetization and lower critical field are better for x = 0.10. Based
on the enhancements of both grain boundary weak-links and flux pinning centers,
improvement of the critical current densities and flux pinning density is obtained with this
kind of doping.
Citation

M. MENASSEL Sihem, Yazid Boudjadja, amira abderrezak, nabil mahamdioua, A.souadel, ahmet varilcci, cabir terzioglu, Sevgi Altintas, , (2016), "Microstructural and magneto-transport properties of Bi1.6Pb0.4Sr2Ca1-xGdxCu2O8+δ superconducting ceramics", [national] Physica B: Physics of Condensed Matter , Elsevier

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Effect Y substitution on the microstructure, transport and magnetic proprieties of Bi2Sr2Ca1Cu2O8+δ superconducting ceramics

In high Tc superconductors (HTSC) the activation energy gives information about the pinning properties of a sample
under applied magnetic field. Pinning of vortices determines the critical current density Jc which is of great importance for
practical applications of HTSC. Instead of magnetic measurements, the activation energy may be calculated from resistivity
measurements realized under magnetic field. This kind of measurement has been made in this work for yttrium doped samples
of Bi2Sr2CaCu2O8+d (Bi-2212) for different values of applied magnetic field. Samples of Bi2Sr2Ca1−xYxCu2O8+d (x = 0,
0.025, 0.1, 0.25) were prepared by a sol-gel method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive analysis of X-ray. The measurements of resistivity were made using a classical four
probe method and DC current. The magnetic field was applied with a constant amplitude of 0 T, 1 T, 2 T and 3 T. The obtained
results show that the activation energy decreases with introduction of yttrium, but has a relative maximum when x is equal 0.1.
The decrease of the activation energy is explained by the granular nature of the samples which promotes 3D transition to 2D of
the vortex lattice.
Citation

M. MENASSEL Sihem, (2016), "Effect Y substitution on the microstructure, transport and magnetic proprieties of Bi2Sr2Ca1Cu2O8+δ superconducting ceramics", [national] Materials Science-Poland , DE GRUYTER OPEN

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2012

Sysnthesis of BiSrCa(Y)CuO superconductor from the sol-gel method and the effect of Y substitution

The main purpose of this research work is to investigate the effect of Cr addition on the properties of Bi1.8Pb0.4Sr2CaCu2O8+d superconducting ceramics. The samples are prepared from commercial powders with different amounts of Cr (0, 1, 2, 3, 4, 5 and 6 wt %) by sol-gel synthesis route. The influence of doping element has determined by, X-ray diffraction (XRD), scanning electron microscopy (SEM), electrical resistivity and magnetic characterizations. Using Bean’s model the maximum critical current density (Jc) is obtained when the Cr -doping content is x = 0.003 and hysteresis loops are increased with increasing doped concentrations. Some physical parameters are extracted from the magneto-resistivity curves and their evolutions with Cr content are discussed by a correlation between the different studies.
Citation

M. MENASSEL Sihem, (2012), "Sysnthesis of BiSrCa(Y)CuO superconductor from the sol-gel method and the effect of Y substitution", [international] 2nd international advances in applied physics and materials science congress APMAS 2012 , Antalya-Turquie

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Effect of Zr addition on Bi2212 supercondutor

The main purpose of this research work is to investigate the effect of Cr addition on the properties of Bi1.8Pb0.4Sr2CaCu2O8+d superconducting ceramics. The samples are prepared from commercial powders with different amounts of Cr (0, 1, 2, 3, 4, 5 and 6 wt %) by sol-gel synthesis route. The influence of doping element has determined by, X-ray diffraction (XRD), scanning electron microscopy (SEM), electrical resistivity and magnetic characterizations. Using Bean’s model the maximum critical current density (Jc) is obtained when the Cr -doping content is x = 0.003 and hysteresis loops are increased with increasing doped concentrations. Some physical parameters are extracted from the magneto-resistivity curves and their evolutions with Cr content are discussed by a correlation between the different studies.
Citation

M. MENASSEL Sihem, (2012), "Effect of Zr addition on Bi2212 supercondutor", [international] First international conference on innovative materials and techniques CIMT 2012 , Hammamet-Tunisie

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influence of pbo doping on superconductivity and crystal stucture of Bi2212 superconductor

The main purpose of this research work is to investigate the effect of Cr addition on the properties of Bi1.8Pb0.4Sr2CaCu2O8+d superconducting ceramics. The samples are prepared from commercial powders with different amounts of Cr (0, 1, 2, 3, 4, 5 and 6 wt %) by sol-gel synthesis route. The influence of doping element has determined by, X-ray diffraction (XRD), scanning electron microscopy (SEM), electrical resistivity and magnetic characterizations. Using Bean’s model the maximum critical current density (Jc) is obtained when the Cr -doping content is x = 0.003 and hysteresis loops are increased with increasing doped concentrations. Some physical parameters are extracted from the magneto-resistivity curves and their evolutions with Cr content are discussed by a correlation between the different studies.
Citation

M. MENASSEL Sihem, (2012), "influence of pbo doping on superconductivity and crystal stucture of Bi2212 superconductor", [international] First international conference on innovative materials and techniques CIMT 2012 , Hammamet-Tunisie

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Synthesis of BiSrCa(Y)CuO superconductor from the sol-gel method and the effect of Y substitution

Superconducting Bi2Sr2Ca1-xYxCu2O8 ceramics samples have been prepared by SolGel methods using citrate process. The influences of the conditions of preparation of oxide
powder compound on structural and superconducting properties have been investigated by X ray
diffraction (XRD), Scanning Electron Microscopy (SEM) equipped with EDS. The critical
transition temperatures Tc have been determined by resistivity versus temperature measurements.
Cell parameters samples were calculated from XRD patterns. The polyacryl amide gel makes the
citrate process easier, more rapid and affords the possibility of synthesis of high quality oxide
powders.
Citation

M. MENASSEL Sihem, mohamed faycal mosbah, sevgi altintas, ahmet varilcci, faiza bouaicha, , (2012), "Synthesis of BiSrCa(Y)CuO superconductor from the sol-gel method and the effect of Y substitution", [national] American Institute of Physics , American Institute of Physics

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2010

study of substitution of Yttrium in Bi2Sr2CaCu2O8+d prepared by Sol-Gel method’s

The main purpose of this research work is to investigate the effect of Cr addition on the properties of Bi1.8Pb0.4Sr2CaCu2O8+d superconducting ceramics. The samples are prepared from commercial powders with different amounts of Cr (0, 1, 2, 3, 4, 5 and 6 wt %) by sol-gel synthesis route. The influence of doping element has determined by, X-ray diffraction (XRD), scanning electron microscopy (SEM), electrical resistivity and magnetic characterizations. Using Bean’s model the maximum critical current density (Jc) is obtained when the Cr -doping content is x = 0.003 and hysteresis loops are increased with increasing doped concentrations. Some physical parameters are extracted from the magneto-resistivity curves and their evolutions with Cr content are discussed by a correlation between the different studies.
Citation

M. MENASSEL Sihem, (2010), "study of substitution of Yttrium in Bi2Sr2CaCu2O8+d prepared by Sol-Gel method’s", [international] materiaux 2010 Mahdia , Mahdia, Tunisie

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2009

Structural and magnetic properties of the Bi2Sr2CaCu2-x COxO8+d

The main purpose of this research work is to investigate the effect of Cr addition on the properties of Bi1.8Pb0.4Sr2CaCu2O8+d superconducting ceramics. The samples are prepared from commercial powders with different amounts of Cr (0, 1, 2, 3, 4, 5 and 6 wt %) by sol-gel synthesis route. The influence of doping element has determined by, X-ray diffraction (XRD), scanning electron microscopy (SEM), electrical resistivity and magnetic characterizations. Using Bean’s model the maximum critical current density (Jc) is obtained when the Cr -doping content is x = 0.003 and hysteresis loops are increased with increasing doped concentrations. Some physical parameters are extracted from the magneto-resistivity curves and their evolutions with Cr content are discussed by a correlation between the different studies.
Citation

M. MENASSEL Sihem, (2009), "Structural and magnetic properties of the Bi2Sr2CaCu2-x COxO8+d", [international] 2ème journées internationales de la physique des matériaux et applications JIPMA 2009 , Gafsa, Tunisie

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A comparison between two methods for preparing of superconductors Bi2Sr2CaCu2O8+d

The main purpose of this research work is to investigate the effect of Cr addition on the properties of Bi1.8Pb0.4Sr2CaCu2O8+d superconducting ceramics. The samples are prepared from commercial powders with different amounts of Cr (0, 1, 2, 3, 4, 5 and 6 wt %) by sol-gel synthesis route. The influence of doping element has determined by, X-ray diffraction (XRD), scanning electron microscopy (SEM), electrical resistivity and magnetic characterizations. Using Bean’s model the maximum critical current density (Jc) is obtained when the Cr -doping content is x = 0.003 and hysteresis loops are increased with increasing doped concentrations. Some physical parameters are extracted from the magneto-resistivity curves and their evolutions with Cr content are discussed by a correlation between the different studies.
Citation

M. MENASSEL Sihem, (2009), "A comparison between two methods for preparing of superconductors Bi2Sr2CaCu2O8+d", [international] 2ème journées internationales de la physique des matériaux et applications JIPMA 2009 , Gafsa, Tunisie

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2008

Surface segregation in binary system of FCC metals

The main purpose of this research work is to investigate the effect of Cr addition on the properties of Bi1.8Pb0.4Sr2CaCu2O8+d superconducting ceramics. The samples are prepared from commercial powders with different amounts of Cr (0, 1, 2, 3, 4, 5 and 6 wt %) by sol-gel synthesis route. The influence of doping element has determined by, X-ray diffraction (XRD), scanning electron microscopy (SEM), electrical resistivity and magnetic characterizations. Using Bean’s model the maximum critical current density (Jc) is obtained when the Cr -doping content is x = 0.003 and hysteresis loops are increased with increasing doped concentrations. Some physical parameters are extracted from the magneto-resistivity curves and their evolutions with Cr content are discussed by a correlation between the different studies.
Citation

M. MENASSEL Sihem, (2008), "Surface segregation in binary system of FCC metals", [international] université des sciences et de la technologie d’Oran « mohamed boudiaf , Oran, Algeria

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contribution of driving forces to calcul the segregation energy

The main purpose of this research work is to investigate the effect of Cr addition on the properties of Bi1.8Pb0.4Sr2CaCu2O8+d superconducting ceramics. The samples are prepared from commercial powders with different amounts of Cr (0, 1, 2, 3, 4, 5 and 6 wt %) by sol-gel synthesis route. The influence of doping element has determined by, X-ray diffraction (XRD), scanning electron microscopy (SEM), electrical resistivity and magnetic characterizations. Using Bean’s model the maximum critical current density (Jc) is obtained when the Cr -doping content is x = 0.003 and hysteresis loops are increased with increasing doped concentrations. Some physical parameters are extracted from the magneto-resistivity curves and their evolutions with Cr content are discussed by a correlation between the different studies.
Citation

M. MENASSEL Sihem, (2008), "contribution of driving forces to calcul the segregation energy", [international] XI journées maghrébines des sciences des matériaux , Mahdia, Tunisie

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2007

surface segregation in binary system of FCC metals : Ni-Pd

The main purpose of this research work is to investigate the effect of Cr addition on the properties of Bi1.8Pb0.4Sr2CaCu2O8+d superconducting ceramics. The samples are prepared from commercial powders with different amounts of Cr (0, 1, 2, 3, 4, 5 and 6 wt %) by sol-gel synthesis route. The influence of doping element has determined by, X-ray diffraction (XRD), scanning electron microscopy (SEM), electrical resistivity and magnetic characterizations. Using Bean’s model the maximum critical current density (Jc) is obtained when the Cr -doping content is x = 0.003 and hysteresis loops are increased with increasing doped concentrations. Some physical parameters are extracted from the magneto-resistivity curves and their evolutions with Cr content are discussed by a correlation between the different studies.
Citation

M. MENASSEL Sihem, (2007), "surface segregation in binary system of FCC metals : Ni-Pd", [international] Université Badji Mokhtar- Annaba , Annaba, Algeria

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surface segregation in binary system of FCC metals: Ni-Pt

The main purpose of this research work is to investigate the effect of Cr addition on the properties of Bi1.8Pb0.4Sr2CaCu2O8+d superconducting ceramics. The samples are prepared from commercial powders with different amounts of Cr (0, 1, 2, 3, 4, 5 and 6 wt %) by sol-gel synthesis route. The influence of doping element has determined by, X-ray diffraction (XRD), scanning electron microscopy (SEM), electrical resistivity and magnetic characterizations. Using Bean’s model the maximum critical current density (Jc) is obtained when the Cr -doping content is x = 0.003 and hysteresis loops are increased with increasing doped concentrations. Some physical parameters are extracted from the magneto-resistivity curves and their evolutions with Cr content are discussed by a correlation between the different studies.
Citation

M. MENASSEL Sihem, (2007), "surface segregation in binary system of FCC metals: Ni-Pt", [international] Université USTHB- ALGER , Alger, Algeria

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