Large magnetocaloric effect of La0.67Pb0.33Mn1−xCoxO3 in small magnetic field variation

Strong Role of Calcination Temperature for Improving Magnetocaloric Effect in Nd0.5Sr0.5MnO3 Prepared via Combustion Technique

“…With rapid steps, increased refrigeration efficiency, reduction in weight, greater mechanical stability, lower environmental impact, greater efficiency, lower noise levels and high cost-effectiveness, magnetocaloric refrigerator (MR) has developed into a strong alternative to gas refrigeration by magnetocaloric effect (MCE) [1][2][3][4][5][6]. In space applications, medical appliances, aerospace applications and food cooling, MR is a fundamental requirement [7][8][9][10][11][12][13][14]. In the range of temperatures near the temperature of a magnetic phase transition ) ( MPT T , MR uses the idea to apply MCE on magnetocaloric (MC) material [15][16][17][18][19][20].…”

Structural Characterization and Magnetic Interactions of La0.7Sr0.25Na0.05Mn1 - xAlxO3

“…Nevertheless, the strontium-doped lanthanum manganite has a well-defined critical temperature of transition into a ferromagnetic state (T C = 377 K) [13], which is the highest Curie point among manganites of LaMnO 3 type. Therefore, in order for a material to be a good candidate for industrial or domestic cooling power technology at room temperature, it is necessary to reduce its Curie temperature by taking into account the modulation of the relative ratio Mn 3+ /Mn 4+ [14][15][16]. This can be achieved by the substitution of manganese with a non magnetic ion which destroys the FM interactions and enhances the nonmetallic character in the material [17,18].…”