Physical investigations on LaMn1−xNixO3 perovskite sprayed thin films along with surface magnetic applications

Gharbi, B.; Boukhachem, A.; Amlouk, M.; Oueslati, M.; Dkhil, Brahim; Meftah, A.

doi:10.1007/s00339-020-03794-x

Cited by 10 publications

(8 citation statements)

References 67 publications

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“…Besides, the transmittance spectra (figure 5(b)) demonstrated that all synthesized films had low UV transparency and high transmittance in the visible range. The maximum transparency in the visible region is recorded for the LaMnO 3 film with an average transmittance of approximately 84 %, which is higher than those found in earlier reports [16,48,49].…”

Section: Optical Propertiescontrasting

confidence: 65%

Preparation and characterization of lanthanum-based perovskite oxides LaMO₃ (M=Fe, Cr, Mn) thin films by electrophoretic deposition

Aljurays,

Loucif,

Amer

et al. 2023

Mater. Res. Express

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In this study, we report the fabrication and characterization of perovskite thin films deposited on FTO substrates via electrophoretic deposition (EPD). The X-ray diffraction (XRD) patterns showed the formation of the orthorhombic structure for and films and the trigonal structure for the film. The field-emission scanning electron microscopy (FE-SEM) micrographs revealed nano-spherical particles with an average grain size of about 50 nm covering the surface with fewer porosities compared to the other films. Moreover, the film exhibited a higher transparency in the visible region (~84%). The estimated bandgaps of , , and perovskite films were found to be 2.17, 3.18, and 2.92 eV, respectively. In addition, the refractive indices of all deposited films were calculated using five empirical models that relate the refractive index to the bandgap, which consistently revealed a decrease in refractive index with an increase of bandgap energy This study holds significant implications for the field of perovskite thin films as we contribute new insights into the fabrication of lanthanum-based perovskite thin films using the EPD technique. The comprehensive characterization of microstructural, morphological, and optical properties provides valuable information for understanding the structure-property relationship in these materials. Furthermore, the determination of bandgaps and refractive indices enhances our understanding of the optical properties of perovskite films. The findings from this study pave the way for potential applications in optoelectronic devices, where fine-tuning of material properties is critical for optimal device performance.

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Section: Optical Propertiescontrasting

confidence: 65%

Preparation and characterization of lanthanum-based perovskite oxides LaMO₃ (M=Fe, Cr, Mn) thin films by electrophoretic deposition

Aljurays,

Loucif,

Amer

et al. 2023

Mater. Res. Express

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“…Raman spectra of T-HEOP and S-HEOP are shown comparatively in Figure h. Both T-HEOP and S-HEOP present a characteristic peak of B 2g (643 cm –1 ), stretching of the Fe/Co/Ni/Cr/MnO 6 octahedron, and an A g mode near ∼640 and ∼500 cm –1 corresponding to the symmetric and asymmetric stretching of octahedral oxygen. , For T-HEOP, the additional broad peak at ∼360 cm –1 and the sharp peak at ∼845 cm –1 could be attributed to the abundant oxygen vacancy, which is consistent with the findings of XPS.…”

Section: Resultsmentioning

confidence: 99%

Metal–Tannin Coordination Assembly Route to Nanostructured High-Entropy Oxide Perovskites with Abundant Defects

Chen

Nie

et al. 2022

Chem. Mater.

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High-entropy oxide perovskites (HEOPs), the incorporation of five or more elements into ABO 3 , possess great flexibility in the composition and electron structure and thus merit untold scientific and technological potential. However, the conventional synthetic methods at high temperatures tend to obtain the bulk with a low surface area, limited exposed active sites, and result in poor catalytic activity. Herein, we report a metal−tannin coordination assembly strategy to synthesize HEOP nanoparticles (NPs) with a size of 10−30 nm and abundant oxygen vacancies. Interestingly, up to 10 immiscible metal elements could be confined into the single HEOP NPs. Meanwhile, the as-synthesized La(FeCoNiCrMn) 3 NPs exhibit better CO oxidation activity than single-metal−oxide perovskites and the conventionally solidstate prepared HEOP catalysts. Moreover, the entropy-stabilized NPs function well in moistureor SO 2 -containing reaction conditions. This work opens up new opportunities to design nanostructured high-entropy materials for heterogeneous catalysis.

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“…The reticular planes of a crystal are defined by their Miller indices (hkl), or there is an interference of planes for the triplets (h,k,l) in orthorhombic structure. The interreticular distance dhkl was related to the Miller indices by the following relationship [17,18]:…”

Section: Resultsmentioning

confidence: 99%

“…The calculation of the nanometric dimensions of the BCZT-xMn ceramic particles is based on the study of ray diffraction; the size of the crystallites is given by the following Scherer's law [18,21]:…”

Section: Resultsmentioning

confidence: 99%

Effect of Mn doping on structure, the dielectric and electric properties of BCZT ceramics

2021

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The synthesis of (Ba0.99Ca0.01)(Zr0.2Ti0.8)O3 (BCZT) and doped (Ba0.99Ca0.01)(Zr0.2Ti0.8-xMnx)O3 (BCZT-xMn) ceramics was successfully carried out by the solid-state method. The doping effect is followed by X-ray powder diffraction, scanning electron microscopy (SEM), and dielectric and conductivity measurements. Indeed, X-ray diffraction measurements show the crystalline structure of ceramics. SEM images indicate the doping effect on the studied perovskite microstructure. The results indicate that during doping the maximum value of the temperature (Tm) of the dielectric constant varies slightly, and there will be a considerable decrease in permittivity, dielectric losses and conductivity. Manganese ions are well integrated in the perovskite while maintaining the solid solution.

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Physical investigations on LaMn1−xNixO3 perovskite sprayed thin films along with surface magnetic applications

Cited by 10 publications

References 67 publications

Preparation and characterization of lanthanum-based perovskite oxides LaMO₃ (M=Fe, Cr, Mn) thin films by electrophoretic deposition

Preparation and characterization of lanthanum-based perovskite oxides LaMO₃ (M=Fe, Cr, Mn) thin films by electrophoretic deposition

Metal–Tannin Coordination Assembly Route to Nanostructured High-Entropy Oxide Perovskites with Abundant Defects

Effect of Mn doping on structure, the dielectric and electric properties of BCZT ceramics

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Physical investigations on LaMn1−xNixO3 perovskite sprayed thin films along with surface magnetic applications

Cited by 10 publications

References 67 publications

Preparation and characterization of lanthanum-based perovskite oxides LaMO3 (M=Fe, Cr, Mn) thin films by electrophoretic deposition

Preparation and characterization of lanthanum-based perovskite oxides LaMO3 (M=Fe, Cr, Mn) thin films by electrophoretic deposition

Metal–Tannin Coordination Assembly Route to Nanostructured High-Entropy Oxide Perovskites with Abundant Defects

Effect of Mn doping on structure, the dielectric and electric properties of BCZT ceramics

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Preparation and characterization of lanthanum-based perovskite oxides LaMO₃ (M=Fe, Cr, Mn) thin films by electrophoretic deposition

Preparation and characterization of lanthanum-based perovskite oxides LaMO₃ (M=Fe, Cr, Mn) thin films by electrophoretic deposition