Room temperature magneto-transport properties of La0.7Ba0.3MnO3 manganite

Mohamed, Abd El-Moez A.; Hernando, B.; Dı́az-Garcı́a, Marta Elena

doi:10.1016/j.jallcom.2016.11.177

Cited by 21 publications

(3 citation statements)

References 34 publications

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“…1 shows the X-ray diffraction (XRD) patterns for La0.7Ba0.3Mn1-xFexO3 (x = 0, 0.02) measured at room temperature. All the samples are in single phased and the observed diffraction pattern for x =0 sample are similar to those reported for La0.7Ba0.3MnO3 [1]. An analysis based on the Rietveld refinement technique shows that the XRD pattern can be indexed to a rhombohedral structure with the Pnma space group.…”

Section: Resultssupporting

confidence: 76%

“…Mixed valence manganite R1−xAxMnO3 (R indicates rare earth elements, such as La, Pr, Sm and Dy; A indicates divalent elements, such as Ca, Sr and Ba) with perovskite structure has been extensively studied for further understanding on theoretical aspect, as well as for the potential application because of the colossal magnetoresistance (CMR) effect. The magnetoresistance phenomenon has proven its applicability in magnetic sensing and magnetic recording technologies [1]. In addition, the relative change of the electrical resistance of some manganite material in the presence of increased magnitude of applied electric field or current, which leads to electroresistance (ER) effect, has scientific interest as well as ramifications for applications, such as non-volatile memory elements [2].…”

Section: Introductionmentioning

confidence: 99%

“…Such relatively large lattice distortion may contribute to relatively high restriction on the flow of change carrier, thereby resulting in smaller change of resistivity in La0.67Ba0.33MnO3 than in Sm0.55Sr0.45MnO3. Moreover, the increased applied current was reported to induce lattice distortion [1] which also influences the ER effect. Therefore, the observation of ER effect may also be related to lattice distortion effect because of the contribution of mismatch effect and current-induced lattice distortion.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Fe3+ Partial Substitution at Mn-Site on Electroresistance Behaviour in La0.7Ba0.3Mn1-xFexO3 (x = 0 and 0.02) Manganites

Sazali

Ibrahim

Mohamed

et al. 2021

SSP

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La0.7Ba0.3Mn1-xFexO3 (x = 0 and 0.02) were prepared by using solid state synthesis method to investigate the effect of Fe3+ substitution at Mn-site on electrical behaviour and structural properties. An analysis of X-ray diffraction, XRD data using refinement method shown both x = 0 and x = 0.02 samples were in single phased and crystallized in rhombohedral structural with Pnma space group. From ρ vs T curves shown resistivity decreased under increased of applied current of 10 mA to 20 mA for both samples in the temperature range of 20 K-300 K. The larger electroresistance, ER effect observed for x = 0.02 in temperature range of 20 K – 180 K compared to x = 0 sample is suggested due to the development of filamentary conduction path under increased of applied current. It is suggested that Fe substitution enhanced magnetic inhomogeneity which contribute to the growth of formation of conductive path under increased of applied current, lead to increase of ER effect. In the temperature range of 180 K – 300 K, the observed decreased in ER for Fe substituted sample (x = 0.02) is suggested due to the increased of scattering effect and reduction of available hopping site in metallic region and insulating region, respectively. Restriction in the movement of charge carrier had weakened the ER effect for Fe substituted sample. The observed ER effect indicates the compound has a potential for application such as for non-volatile memory elements.

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Section: Resultssupporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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