M. Nasri

TL;DR: In this article, the critical behavior of La 0.6 Ca 0.4− x Sr x MnO 3 compounds has been investigated based on the data of static magnetic measurements in the vicinity of its critical temperature T C.

TL;DR: In this article, the magnetocaloric and magneto-transport properties of perovskites manganites composites (La0.6Ca0.4MnO3)/x(CuO) (LCMO/CuO), synthesized by solid-state reaction method, were reported.

TL;DR: In this article, the percolation theory is introduced to understand and improve the properties of these mixed systems and an enhanced magnetoresistance is attributed to the enhanced magnetic disorder at interfaces and grain boundaries as well as to the suppression of enhanced spin-dependent scattering of the conduction electrons by the applied magnetic field.

TL;DR: In this paper, the authors used the sol-gel method to elaborate the Cu-substituted CoFe2O4 and found that the substitution of Fe by Cu on CoFe 2O4 increases the ac conductivity and decreases the dielectric loss especially at higher frequencies.

TL;DR: The La06Ca04−xSrxMnO3 (x=0, 02 and 04) samples have been elaborated by the solid-state method X-ray powder diffraction shows that, for x = 0, the sample crystallizes in orthorhombic phase, while for x≥02 the structure becomes rhombohedral.