Enhancing magnetoresistive features of iron-substituted La0·8Sr0·2MnO3 ceramic manganites

A Review of Synthesis and Novel Transport Properties of Multivalent Manganate Perovskite: Progress, Opportunities, and Challenges

“…As x rises to 0.1, the maximum TCR value of ≈8.23% K-1 is obtained. Meanwhile, the maximum magnetoresistance of the sample with x = 0.1 is 48.1% at 233 K. [75] In addition, variations in the external field and grain size/granular boundaries also have an effect on the magnetoresistance properties of manganate perovskite. Yang et al prepared polycrystalline La 0.7 Ca 0.3 MnO 3 : Agx composites by solgel and solid-phase addition methods, and large magnetoresistance and magnetic anisotropy (84.1% and 32%, respectively) were obtained in a 1 T magnetic field close to room temperature when x = 0.2.…”

Investigation on the structural, magnetic, magnetocaloric and magnetotransport behaviour of La0.7Sr0.3MnO3 manganites synthesised by different routes

“…CMR materials have attracted significant interest in recent years due to their potential application in sensors and magnetic memory devices. 2,3 Manganites have also been found to exhibit a large MCE under moderate applied fields, revealing that CMR manganites are also possible candidates for magnetic refrigeration applications. Magnetocaloric materials offer an environmentally sound and economically viable refrigeration technology as an alternative to the traditional vapour compression-expansion cycle, leading to the development of effective green cooling systems completely for both domestic and industrial applications.…”

“…Transition metal oxides display a staggeringly wide range of physical phenomena, such as multiferroicity, 1 colossal magnetoresistance (CMR), 2–7 high temperature superconductivity, 8,9 and magnetocaloric effect (MCE), 10–12 as cathode materials in solid oxide fuel cells 13 and can have unique applications in spintronics 14,15 as well as in hyperthermia applications. 16 Perovskite manganese oxides of the form R 1− x A x MnO 3 (R = trivalent rare earth ion, A = divalent alkaline earth ion) have received wide attention recently due to their exceptional magnetic and electrical characteristics and the close proximity between their spin, charge, orbital, and lattice degrees of freedom.…”