Resistivity, I–V characteristics and Hall effect in Dy0.5(Sr1-xCax)0.5MnO3 manganites

Griffiths phase, magnetic memory and ac susceptibility of an antiferromagnetic titanate-based perovskite Er0.9Sr0.1Ti0.975Cr0.025O3 system

“…Based on the previous formula, the μ eff,th =9.10 μ B is not so close to the experimental value suggesting that the PM phase is not fully homogenous [21]. An abrupt downturn starting at 132 K down to 2 K suggests the possibility of existing of Griffiths phase (GP) [25][26][27].…”

“…It illustrates different shapes of agglomerated grains. The EDS spectrum of the system (figure 2(b)) shows that all chemical elements are present (Er, Sr, Ti, Cr, and O) and there are no strange elements confirming the right composition and no element was lost during sintering [21][22][23]. Statistical evaluation of the grain size distribution of the studied sample was analyzed via ImageJ software (figure 2(c)).…”

“…We are interested in investigating the magnetic properties of ATiO 3 materials for their wide range of applications in magnetic memory [5,6], bolometer applications [7][8][9], gas sensors, magnetoresistance [10,11], magnetic cooling [12][13][14], magneto-optical devices, magneto-sensor electronics, superconducting electronics, microwaves, energy conversion applications, spintronics [15,16]; a field of science at the interface between electronics and magnetism that exploits not only the charge of the electrons but also their spin.…”

Enhancement of the Magnetotransport Behavior in a Phase-Separated LaAgCaMnO3 Polycrystalline: Unraveling the Role of a Multi-Double-Exchange Mechanism

“…In both processes, the MR curves exhibits a plateau-like shape at low-temperature region (i.e., around the T ρ ) and the MR value was recorded to be 99% for an applied field of 2 T. Similar and lower obtained MR values have also been presented in previous studies on manganese oxides (Table ). ,− With an applied field of 5 T, the maximum MR value is ∼100 and 94.68% around 116 and 173 K for cooling and heating, respectively. For an applied field of 8 T, the maximum MR value is ∼100 and 95% at 117 and 178 K for cooling and heating, respectively.…”

“…The coexistence of two or more magnetic/electrical different phases within the same compound was ascribed as the phase separation (PS) phenomenon, which plays a crucial role in tuning the CMR effect of doped perovskite manganese oxides. − Among this class of materials, one can mention La 1– x Ca x MnO 3 systems which draw specific attention and motivation for researchers as they show a wide variety and enhanced magnetoelectrical properties. A study on La 0.5 Ca 0.5 MnO 3 (LCMO) system was carried out by Dagotto et al, showing that the half-doped LCMO material exhibits a spectacular CMR effect, which was investigated as an effect essentially attributed to the enhanced PS phenomenon.…”