Browsing by Author "Mahamdioua, N."
Now showing items 1-5 of 5
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Cation size mismatch effect in (La1-yREy)(1.4)Ca1.6Mn2O7 perovskite manganites
Koc, N. Soylu; Altintas, S. P.; Mahamdioua, N.; Terzioglu, C. (Elsevier Science Sa, 2019)The size variance (sigma(2)) that indicates random disorder of cations distributed over the A or B-site, has significant influence on the basic quantities on perovskite manganites. In this study, we investigate the effect ... -
Effect of Eu doping on structural and magneto-electrical properties of La0.7Ca0.3MnO3 manganites
Altıntaş, Sevgi Polat; Amira, A.; Mahamdioua, N.; Varilci, Ahmet; Terzioğlu, Cabir (Elsevier Science Sa, 2011)We have investigated the influence of europium (Eu) doping on structural and magneto-electrical properties of La0.7Ca0.3MnO3 compounds. In order to analyze the physical mechanism of a spin disorder system and study their ... -
Effect of fluorine doping on phase formation and properties of Bi(Pb)-2223 ceramics
Amira, A.; Saoudel, A.; Boudjadja, Y.; Amirouche, L.; Mahamdioua, N.; Varilci, Ahmet; Akdoğan, Mustafa; Terzioğlu, Cabir (Elsevier Science Bv, 2011)Superconducting ceramics of Bi1.6Pb0.4Sr2Ca2Cu3OyFx (x = 0-0.6) are prepared in air by conventional solid state reaction and characterized. The study shows that the melting point of the samples decreases as fluorine content ... -
Pseudo-inversion from n to p conductivity type of sprayed alpha-hematite films via copper doping
Chouikh, F.; Bouznit, Y.; Mahamdioua, N.; Altıntaş, Sevgi Polat (Elsevier Science Sa, 2020)Pure and copper doped iron oxides (Fe2O3 :Cu) were prepared on soda-lime glass substrates using spray technique. XRD indicated that pure and copper doped films exhibited iron oxide rhombohedral hematite pure structure with ... -
Substitution effect of Sr2+ by Ca2+ on structure and superconducting properties of Bi2Sr1.6La0.4CuO6+? (Bi-2201) ceramics
S., Boudjaoui; Amira, A.; Mahamdioua, N.; Altıntaş, Sevgi; Varilci, Ahmet; Terzioğlu, Cabir (Elsevier B.V., 2018)In this work, the effect of Ca2+ iso-valence substitution for Sr2+ on properties of Bi2Sr1.6La0.4CuO6+? superconductors is presented. Samples series with nominal composition of Bi2Sr1.6-xCaxLa0.4CuO6+? (x= 0, 0.2, 0.4, 0.6 ...
