Magneto-conductive mechanisms in the La-site doped double-layered La1.4Ca1.6Mn2O7 manganites

Mahamdioua, N.; Amira, A.; Boudjadja, Y.; Saoudel, A.; Altintas, S.P.; Varılcı, A.; Terzioğlu, C.

doi:10.1016/j.physb.2016.07.011

Cited by 9 publications

(2 citation statements)

References 24 publications

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“…Where ξ is the localization length equal to 0.1 nm, T 0 determined by fitting using the 3D -VRH models [67,68]. The obtained 𝑅 ℎ (𝑇) and 𝐸 ℎ (𝑇) of the sample are presented in Fig.…”

Section: Resistivity Curves Fittingmentioning

confidence: 99%

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: Resistivity Curves Fittingmentioning

confidence: 99%

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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“…Recently, there has been growing interest in the study of layered perovskites, which possess a wide variety of interesting properties, including superconductivity, colossal magnetoresistance (CMR) [1,2], ferroelectricity, and catalytic activity [3][4][5][6][7][8][9][10][11][12]. Layered perovskites are intergrowths of perovskite and other structures, and they consist of two dimensional (2D) perovskite slabs interleaved with cations or cationic structural units.…”

Section: Introductionmentioning

confidence: 99%

Structural, Electronic, and Mechanical Properties of A₃Mn₂O₇(A = Sr, Ca): Ab Initio Calculation

et al. 2019

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In the present study, the structural, electronic, optical, and mechanical properties of the Ruddlesden-Popper type oxide compounds are investigated by means of density functional theory. In our calculation, spin polarized electron band structures and density of the state were identified by adding to the spin contribution of the Mn-atom. For A 3 Mn 2 O 7 compounds, the real and imaginary parts of the dielectric function and other optical properties, such as energy loss function, effective number of valence electrons, and effective optical dielectric constant, were calculated accordingly. In addition, the bulk modules, shear modules, Young's modulus and Poisson ratios, anisotropy factors, sound velocities, and Debye temperatures for these compounds were calculated too.

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Structural, electrical, magnetic and magnetotransport properties of La0.7Ca0.18Ba0.12Mn0.95Sn0.05O3 manganite prepared with different quenching processes

et al. 2022

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Magneto-conductive mechanisms in the La-site doped double-layered La1.4Ca1.6Mn2O7 manganites

Cited by 9 publications

References 24 publications

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

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

Structural, Electronic, and Mechanical Properties of A₃Mn₂O₇(A = Sr, Ca): Ab Initio Calculation

Structural, electrical, magnetic and magnetotransport properties of La0.7Ca0.18Ba0.12Mn0.95Sn0.05O3 manganite prepared with different quenching processes

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Magneto-conductive mechanisms in the La-site doped double-layered La1.4Ca1.6Mn2O7 manganites

Cited by 9 publications

References 24 publications

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

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

Structural, Electronic, and Mechanical Properties of A3Mn2O7(A = Sr, Ca): Ab Initio Calculation

Structural, electrical, magnetic and magnetotransport properties of La0.7Ca0.18Ba0.12Mn0.95Sn0.05O3 manganite prepared with different quenching processes

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Structural, Electronic, and Mechanical Properties of A₃Mn₂O₇(A = Sr, Ca): Ab Initio Calculation