Effect of sintering temperature on electrical transport of La0.67Ca0.33MnO3 granular system with 4% CuO addition

Effect of chromium concentration on the structural, magnetic and electrical properties of praseodymium-calcium manganite

“…Finally, those pellets were cooled from high temperature to room temperature following the cooling inertia of the furnace (~8 h). The physical properties depend strongly on the synthesis route and also on the cooling method [37,38,39,40]. For each sample, phase purity, homogeneity and cell dimensions were determined by powder X-ray diffraction (XRD) data, recorded at room temperature on a M A N U S C R I P T…”

Transport properties of silver–calcium doped lanthanum manganite

“…They can be used as magnetoresistive transducers, magnetic sensors, computer memory systems, magnetic refrigerants and infrared detectors [1][2][3]. These properties can be improved by choosing dopants [4][5][6][7][8][9][10][11][12], substitution sites [13], preparation route [14][15][16] and insertion of nanostructures [17].…”

Electrical transport and magnetic properties in La0.7Sr0.3MnO3 and SrFe12O19 composite system

“…The enhanced low-field magnetoresistance (LFMR) is generally thought to be extrinsic in nature and ascribed to the spin-polarized tunneling of conduction electrons through grain boundaries as proposed by Hwang et al [9]. These secondary insulators include Co 3 O 4 [10], glass [11], MgO [12], CuO [13], V 2 O 5 [14], ZrO 2 [15], Fe 2 O 3 [16], NiO [17], PMMA [18] and CuMn 2 O 4 [19]. These results suggest that the insulating boundary or the barrier layer is important to enhance the MR effect.…”