Fraction of Rare-Earth (Sm/Nd)-Lanthanum Ferrite-Based Perovskite Ferroelectric and Magnetic Nanopowders

Raji, Ramesh Kumar; Ramachandran, Tholkappiyan; Natarajan, K.; Muralidharan, M.; Hamed, Fathalla; Kurapati, Vishista

doi:10.1007/s11664-018-06897-7

Cited by 36 publications

(5 citation statements)

References 35 publications

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“…The Rietveld refinement was used to estimate lattice constants (a, b, and c), lattice strain, crystallite size, cell volume (V), bond length, bond angle, etc, and the results are summarized in table 1. The obtained results are consistent with previously reported literature data [32,33]. As presented in table 1, The low values of Goodness-of-Fit (GoF) for all samples indicate the excellent agreement between the experimental and calculated XRD patterns.…”

Section: Resultssupporting

confidence: 91%

The impact of Sm substitution on structural and optical properties of LaFeO₃: their application as a photocatalyst for the degradation of methylene blue under visible light irradiation

Raslan,

Makram,

Adam

2023

Phys. Scr.

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The objective of the present study is to enhance the photocatalytic activity of LaFeO3 by inserting Sm ions on the La site for the degradation of methylene blue. We employed citric sol-gel techniques to produce ultrafine powders of the La1-xSmxFeO3 (0.0 ≤ x ≤ 0.5) nanoperovskite samples. All samples confirmed the presence of a pure Pbnm orthorhombic phase structure. The decrease of lattice constants, crystallite sizes and cell volumes, and increase in microstrains suggest a deformation of the structure due to the addition of Sm ion on the La site of the La1-xSmxFeO3. The images of HR-TEM and FE-SEM for all samples revealed a homogeneous distribution of almost spherical nanoparticles, with decreasing average particle sizes ranging from 49.95 ± 3.12 to 34.28 ± 4.38 nm, as Sm ratios increases from 0.0 to 0.5%. The spectra of FTIR confirmed the formation of a Lax-1SmxFeO3 perovskite phase by the appearance of lower frequency bands Fe–O-Fe and La-O-La at ~ 400 cm-1 and a higher absorption band Fe -O and La -O at ~ 564 cm-1. The Raman spectra were employed to investigate the formation of phonon modes of La1-xSmxFeO3. Diffused reflectance spectroscopy (DRS) demonstrated the decrease of energy gap (Eg) values from 2.38 to 1.86 eV and the increase in Sm content from 0.0 to 0.5%. Since these Eg values fall within the visible light region, the photocatalytic activity of La1-xSmxFeO3 samples demonstrated a gradual increase in the degradation ratio of MB from 31.7 to 73.2% with increasing Sm content from 0.0 to 0.5%, respectively, under visible light illumination.

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Section: Resultssupporting

confidence: 91%

The impact of Sm substitution on structural and optical properties of LaFeO₃: their application as a photocatalyst for the degradation of methylene blue under visible light irradiation

Raslan,

Makram,

Adam

2023

Phys. Scr.

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“…1,26,27 Compared with bulk counterpart, nanosized perovskites exhibit a series of advantages: for the fabrication of thin films and flexible devices, PNMs display a high processability; 28,29 for catalysis, PNMs feature rich and modulatable facets and active sites; 30,31 besides, benefiting from the small-size effect and quantum effect, PNMs are endowed with outstanding photo-electro-magnetic properties. [32][33][34][35][36][37][38] All these new characteristics help to enrich the performances of perovskites and broaden their applications.…”

Section: Introductionmentioning

confidence: 99%

Rare-earth-containing perovskite nanomaterials: design, synthesis, properties and applications

et al. 2020

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“…Perovskites show various important applications as half-metallicity, insulating nature, superconductors, semiconductors, ferroelectricity, magnetic memory, photodetectors, photocatalytic, modulators, lasers, etc. [4][5][6][7][8][9][10] In the unit cell of inverse perovskite, the heavy metal atoms have exchanged positions with the nonmetal atoms placed at face centers, the nonmetal atoms at the body-center position, and light-metal atoms at the cube corner sites. Inverse or antiperovskites have been examined since 1980 because of various interesting properties.…”

Section: Introductionmentioning

confidence: 99%

Insight into various properties of rare‐earth–based inverse perovskites Gd ₃ AlX (X = B, N)

Nabi

Gupta

2019

Int J Energy Res

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Summary The state‐of‐the‐art density functional theory is used to investigate various properties of rare‐ earth based inverse perovskites Gd3AlX (X = B, N). The materials show robust structural stability at high pressures without undergoing any phase transition. The ferromagnetic character is retained at high pressures with high value magnetic moments 7.09 μB and 7.38 μB at 0 GPa for Gd3AlB and Gd3AlN, respectively. In view of Poisson's and Pugh's ratio, the ductility and brittleness of Gd3AlX (X = B, N) has been analyzed. The mechanical stability is maintained throughout the pressure range with high value of Debye temperature. Transport properties have been calculated at different pressures for both the alloys, which show excellent thermoelectric properties. Besides, this the variation on some significant thermodynamic properties is also studied. Our successful prediction of the stabilization of the metallic Gd3AlX (X = B, N) has proposed a route to synthesize novel rare‐earth–based inverse perovskites.

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Fraction of Rare-Earth (Sm/Nd)-Lanthanum Ferrite-Based Perovskite Ferroelectric and Magnetic Nanopowders

Cited by 36 publications

References 35 publications

The impact of Sm substitution on structural and optical properties of LaFeO₃: their application as a photocatalyst for the degradation of methylene blue under visible light irradiation

The impact of Sm substitution on structural and optical properties of LaFeO₃: their application as a photocatalyst for the degradation of methylene blue under visible light irradiation

Rare-earth-containing perovskite nanomaterials: design, synthesis, properties and applications

Insight into various properties of rare‐earth–based inverse perovskites Gd ₃ AlX (X = B, N)

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Fraction of Rare-Earth (Sm/Nd)-Lanthanum Ferrite-Based Perovskite Ferroelectric and Magnetic Nanopowders

Cited by 36 publications

References 35 publications

The impact of Sm substitution on structural and optical properties of LaFeO3: their application as a photocatalyst for the degradation of methylene blue under visible light irradiation

The impact of Sm substitution on structural and optical properties of LaFeO3: their application as a photocatalyst for the degradation of methylene blue under visible light irradiation

Rare-earth-containing perovskite nanomaterials: design, synthesis, properties and applications

Insight into various properties of rare‐earth–based inverse perovskites Gd 3 AlX (X = B, N)

Contact Info

Product

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The impact of Sm substitution on structural and optical properties of LaFeO₃: their application as a photocatalyst for the degradation of methylene blue under visible light irradiation

The impact of Sm substitution on structural and optical properties of LaFeO₃: their application as a photocatalyst for the degradation of methylene blue under visible light irradiation

Insight into various properties of rare‐earth–based inverse perovskites Gd ₃ AlX (X = B, N)