Pierre Lachkar

Pierre Lachkar
Center for Natural Resource Studies | CNRS · Institut Neel

About

12
Publications
1,421
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
157
Citations

Publications

Publications (12)
Article
Perovskite manganite (1-x)La0.6Ca0.4MnO3/xMn2O3 (x=0, 0.05. 0.1, 0.15, 0.20) composites were prepared by solid state reaction method. X-ray diffraction measurements were used to confirm the crystal structure and the average crystallite size of the samples. Their magnetic, magnetocaloric and heat capacity properties display a presence of second orde...
Article
Full-text available
In this work, the structural, magnetic and magnetocaloric properties of 0.95La 0.45 Nd 0.25 Sr 0.3 MnO 3 /0.05CuO composites materials were investigated. The samples have been synthesized by solid-state reaction route. The XRD patterns of composites powders show the presence of both perovskite La 0.45 Nd 0.25 Sr 0.3 MnO 3 and monoclinic Tenorite Cu...
Article
Electrical resistivity and magnetization measurements realized on polycrystalline Ni45.2Co4.7Mn36.2In13.9 film showed that the austenite phase was blocked upon a magnetic field during the martensitic transformation. Besides, the shift of the temperature transition upon a magnetic field towards the lower temperature is responsible for a large magnet...
Article
Full-text available
La0.8-x□xCa0.2MnO3 (x=0, 0.1 and 0.20) samples were prepared by the conventional solid-state reaction and annealed at 1200 K. X-ray diffraction and scanning electron microscopy were used to check the crystalline structure and the samples morphology. Resistivity measurements versus temperature under different magnetic fields are performed to investi...
Article
The (La0.6Ca0.2Sr0.2MnO3)1−x(Sb2O3/CuO)x (x=0.00, 0.03, 0.07, 0.12 and 0.18) composites were prepared by the solid-state reaction technique. (La0.6Ca0.2Sr0.2MnO3)1−x(Sb2O3/CuO)x are identified by X-ray diffraction and SEM analysis as a two phases consisting of ferromagnetic manganite phase and Sb2O3/CuO phase. Magnetic measurement reveals that the...
Article
Magneto-transport and magnetic studies on the (1 - x)(La0.6Sr0.4MnO3)/xSb(2)O(3) (x = 0.00, 0.03, 0.07, 0.12 and 0.18) composite system are reported. X-ray and microanalysis results reveal that there is no evidence of reaction between the La0.6Sr0.4MnO3 and Sb2O3 grains. The Curie temperature T-C of the composite system remains unchanged; however,...
Article
A new Er2Mn2O7 compound was synthesized by the ceramic method and its crystal structure was characterized using powder X-ray diffraction (XRD) and observed by scanning electron microscopy (SEM). The magnetic properties were investigated using a BS2 magnetometer and the heat capacity was studied using a quantum design (PPMS). The structural study re...
Article
The La0.6Ca0.4−xSrxMnO3 (x=0, 0.2 and 0.4) 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≥0.2 the structure becomes rhombohedral. The variation of magnetization as a function of temperature and applied magnetic field were carried out....
Article
Full-text available
La(0.8)Ca(0.2 - x)□(x)MnO(3) (x = 0.00, 0.10, and 0.20) perovskite was prepared by the conventional solid-state reaction and annealed at 1473 K. X-ray diffraction and scanning electron microscopy shown the existence of a secondary phase attributed to the unreacted Mn(3)O(4) oxide. The magneto transport properties have been investigated based on the...

Network

Cited By