The dependence of percolation threshold on doping degree in La1−x(K, Ag)xMnO3 manganites

Magnetoresistance (MR) properties of magnetic materials

“…Fig. 7D shows that the experimental results are in accordance with the equation, even with the influence of external magnetic fields of 0 T, 2 T, and 5 T. This result aligns with the research of Gamzatov et al 143 …”

“…Fig. 7D shows that the experimental results are in accordance with the equation, even with the inuence of external magnetic elds of 0 T, 2 T, and 5 T. This result aligns with the research of Gamzatov et al 143 In the GMR effect, there are several mechanisms to consider related to the transition between antiferromagnetic (AF) and ferromagnetic (F) states. One mechanism is spin-dependent scattering of conduction electrons, associated with a decrease in relaxation time in the AF state.…”

Magnetotransport, thermophysical and magnetocaloric properties of manganite La-=SUB=-0.8-=/SUB=-Ag-=SUB=-0.1-=/SUB=-MnO-=SUB=-3-=/SUB=- in magnetic fields up to 8 T

“…In the immediate vicinity of the phase transition, the dependence ρ(T ) is not described by expressions (1) and (2): when the sample passes into the low-temperature ferromagnetic phase, a sharp increase in conductivity is observed, which cannot be explained within the framework of the considered models. However, if we assume that the metal-dielectric phase transition in this system is a percolation phase transition, the observed behavior of the electrical resistance can be explained in terms of percolation theory [3,12].…”