Investigation of magneto-transport properties of the co-doped La1.6-xPrxCa1.4-xBaxMn2O7 (x = 0.2 and 0.4) double-layered manganite

Denbri, Fatih; Mahamdioua, N.; Meriche, Faiza; Altintas, S.P.; Terzioğlu, C.

doi:10.1007/s10854-021-06398-0

Cited by 4 publications

(4 citation statements)

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“…Such phases traces were very difficult to avoid in the DL manganites prepared by the solid-state reaction. We can notice that the unit-cell parameters were quite similar to those reported in a previous work by F. Denbri et al [12].…”

Section: Structural Propertiessupporting

confidence: 88%

“…Where ρ 0 is the residual resistivity and T 0 = 24/k B π(N Ef )ξ 3 , 𝑁(𝐸 𝑓 ) is the density of states near the Fermi level and 𝜉 is the inverse of the localization length of the trapped charge carriers. In the DL manganite 𝜉 is found to be 10 -10 m [12]. The T 0 values were estimated from the resistivity curve fit and then used to calculate N Ef .…”

Section: Resistivity Curves Fittingmentioning

confidence: 99%

“…Other investigations on the A-site doped DL manganites were carried out, and it was found that the added element content and its physical characteristics have a significant impact on the structural, electrical, magneto-electrical, and magnetic properties by the introduced elements content and their physical properties [21,16,12]. More investigations on the chemical doping of the Mn site with transition elements, on the Asite and oxygen deficiency, on the synthesis conditions, and on the method effect on manganite properties have been the object of instructive investigations [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

“…Due to their unique features, lanthanum-based DL compounds synthesized by solid-state reaction have received extensive research [11,12]. Upon hole doping, La 3 Mn 2 O 7 oxide is able to incorporate mixedvalence of Mn, inducing Mn 3+ and Mn 4+ ions.…”

Section: Introductionmentioning

confidence: 99%

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On the magnetotransport properties and Griffith phase in (La,Gd)1.4 (Ca,Sr)1.6 Mn2 O7 the double layered manganites

Belguet

Mahamdioua

Meriche

et al. 2023

Preprint

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The bilayered manganite with formula \({ \text{L}\text{a}}_{1.2}{\text{G}\text{d}}_{0.2}{\text{C}\text{a}}_{1.2}{\text{S}\text{r}}_{0.4}{\text{M}\text{n}}_{2}{\text{O}}_{7}\)has been synthesized by the solid state reaction route with the aim of studying its structural, microstructural, magnetic, electrical and magnetotransport properties. The X-ray diffraction patterns have been analyzed by Rietveld refinement. It revealed that the sample crystallized in a tetragonal structure with the space group I4/mmm and that, as an impurity phase, there were traces of an orthorhombic structure corresponding to a simple perovskite with the space group Pnma. The morphology was examined by using scanning electron microscopy, which revealed that it was porous and granular. The presence and purity of all the constituent elements were confirmed by the Energy Dispersive X-ray spectroscopy investigation. Based on magnetization, the inverse of susceptibility, and hysteresis loop, the magnetic behavior of the compound is discussed in detail. The sample displays a phase transition from ferromagnetic (FM) to paramagnetic (PM) at \({\text{T}}_{\text{C}}\), which was determined to be 290.13 K. Between 305 and 360 K, a Griffith phase (GP) was discovered, indicating the existence ofFM clusters in the paramagnetic domains, and the Griffithtemperature was found to be\(\)339 K. The sample can be thought of as spin-glass-like manganite since a significant divergence wasobserved at low temperatures between the magnetization curves M (T) in the zero-field cooling (ZFC) and field cooling (FC) modes. The spin-glass transition temperature was found to be 261 K. The electrical resistivity under both 0 and 1 T magnetic field exhibits metal-to-insulator transition at \({\text{T}}_{\text{M}\text{I}}\) = 152.98 K. The magnetoresistance was observed to decrease with increasing temperature, peaking at 23% at 11 K under 1 T. Total resistivity in magnetic applied fields of 0T and 1T is composed of residual resistivity, weak localization, and electron-electron combinations below \({\text{T}}_{\text{M}\text{I}}\). Above\({\text{T}}_{\text{M}\text{I}}\) and\({{\theta }}_{\text{D}}/2\) (\({{\theta }}_{\text{D}}\)is Debye temperature), the Mott’s 3D variable range hopping mechanism (3D-VRH) governed the electrical conduction, whereas, the adiabatic small polaron hopping model governed it in the range\({{\theta }}_{\text{D}}/2>\text{T}>300\text{K}\). The density of states, mean hopping energy, and mean hopping distance have all been estimated and thoroughly discussed.

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Section: Structural Propertiessupporting

confidence: 88%

Section: Resistivity Curves Fittingmentioning

confidence: 99%