Structural and Magnetic Tuning of LaFeO3 Orthoferrite Substituted Different Rare Earth Elements to Optimize Their Technological Applications

Ateia, Ebtesam E.; Ismail, H.; Elshimy, Hassan; Abdelmaksoud, M.

doi:10.1007/s10904-021-01887-5

Cited by 24 publications

(7 citation statements)

References 50 publications

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“…Upon comparing the structural parameters of nanoparticles with their single crystal counterparts (Table 1), it is observed that in nanoparticles, the tilt angle increases and lattice constant c decreases as compared to their bulk counterparts. Nanoparticles have larger surface to volume ratios, which distorts their unit cells to reduce their overall free energy 18,19 . This results in either a structural distortion to reduce the coordination of the RE ions occurs while keeping the coordination of the Fe ions as 6, or RE ion moves out of the RO plane, or by rotating the FeO 6 octahedra 20 …”

Section: Resultsmentioning

confidence: 99%

Manifestation of chemical pressure: Magnetism and magnetostriction in nanoscale RFeO₃ (R = Sm, Dy, Ho, and Lu)

Chaturvedi,

Shyam,

Liu

et al. 2024

J Am Ceram Soc.

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The effect of ionic radii sizes on magnetostriction is studied in relation to structural and magnetic properties. To explore the effect of the chemical pressure, nanoparticles of rare‐earth (RE) orthoferrites, SmFeO3, DyFeO3, HoFeO3, and LuFeO3 are studied using X‐ray diffraction, field emission scanning electron microscopy, and Raman spectroscopy. Magnetic and magnetostriction measurements are also performed. In these orthoferrites, the coordination of the RE ion is eightfold, whereas the RE ionic radii are significantly different, which directly influences the structural parameters. The distortion of FeO6 octahedra is observed as a result of changing chemical pressure within the lattice. The different magnitudes of magnetostriction in RE orthoferrites can be attributed to the different degrees of distortion of FeO6 octahedra, R–O dynamics, and spin–orbit interactions in the system. The maximum value of magnetostriction (∼ 19 ppm) and magnetization at 2 K (30.64 emu/g) is demonstrated by HoFeO3. Comparison of structural parameters of the samples to their respective bulk counterparts indicated relative structural distortion in nanoparticles.

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Section: Resultsmentioning

confidence: 99%

Manifestation of chemical pressure: Magnetism and magnetostriction in nanoscale RFeO₃ (R = Sm, Dy, Ho, and Lu)

Chaturvedi,

Shyam,

Liu

et al. 2024

J Am Ceram Soc.

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“…It is found that all the thin film samples under different oxygen pressures exhibit similar root mean square (RMS) roughness, and this feature enables us to compare subsequent OER measurements quantitatively. [16][17][18][19] As we all know, surface morphology has a significant effect on the active area involved in the catalytic reaction.…”

Section: Resultsmentioning

confidence: 99%

The modulated oxygen evolution reaction performance of LaFeO₃ with abundant electronic structures via a design of stoichiometry offset

Zhang

Liu

et al. 2023

Phys. Chem. Chem. Phys.

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“…Nanoparticles of Barium and cobalt doped Barium hexaferrite were synthesized by the citrate autocombustion method as mentioned in the previous work [3]. The proper amounts of the precursors corresponded to the stoichiometric ratios from nitrates were added.…”

Section: Experimental Techniquementioning

confidence: 99%

Tuning The Properties of Ba-M Hexaferrite BaFe11.5Co0.5O19: A Road Towards Diverse Applications

Ateia

Elsayed

Ramadan

2021

Preprint

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The development of hexaferrite nanoparticles is scrutinized as potential sorbents for the removal of chromium (Cr) ions from aqueous chromium-containing solutions in a batch adsorption experiment. The transition metal Co doped BaFe12O19 hexaferrite compounds (BHF) have been synthesized successfully via citrate auto combustion technique. Structural, morphological, and magnetic properties are testified. X-ray diffraction pattern ratifies the existence of hexagonal phase as a main phase for the prepared samples. The average crystallite sizes are found in the range of 47–49 nm. The high-resolution transmission electron microscopy (HRTEM), as well as the Fourier, transform infrared spectrophotometry results confirm an M-type hexagonal structure existing. The c-T indicates the temperature-dependent ferromagnetic behavior of BHF nanoparticles. The derivative shows a single transition temperature Tc at 698 °C, 710 for BHF and BHCF respectively. The prepared samples are utilized as an adsorbent for the removal of Cr (VI) from the aqueous solution. The maximum adsorption capacity (qm) of Cr (VI) on the nano hexaferrite is higher than that of various other adsorbents testified in the literature. The pseudo-second-order kinetic model gives a better fit to the experimental data

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Structural and Magnetic Tuning of LaFeO3 Orthoferrite Substituted Different Rare Earth Elements to Optimize Their Technological Applications

Cited by 24 publications

References 50 publications

Manifestation of chemical pressure: Magnetism and magnetostriction in nanoscale RFeO₃ (R = Sm, Dy, Ho, and Lu)

Manifestation of chemical pressure: Magnetism and magnetostriction in nanoscale RFeO₃ (R = Sm, Dy, Ho, and Lu)

The modulated oxygen evolution reaction performance of LaFeO₃ with abundant electronic structures via a design of stoichiometry offset

Tuning The Properties of Ba-M Hexaferrite BaFe11.5Co0.5O19: A Road Towards Diverse Applications

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Structural and Magnetic Tuning of LaFeO3 Orthoferrite Substituted Different Rare Earth Elements to Optimize Their Technological Applications

Cited by 24 publications

References 50 publications

Manifestation of chemical pressure: Magnetism and magnetostriction in nanoscale RFeO3 (R = Sm, Dy, Ho, and Lu)

Manifestation of chemical pressure: Magnetism and magnetostriction in nanoscale RFeO3 (R = Sm, Dy, Ho, and Lu)

The modulated oxygen evolution reaction performance of LaFeO3 with abundant electronic structures via a design of stoichiometry offset

Tuning The Properties of Ba-M Hexaferrite BaFe11.5Co0.5O19: A Road Towards Diverse Applications

Contact Info

Product

Resources

About

Manifestation of chemical pressure: Magnetism and magnetostriction in nanoscale RFeO₃ (R = Sm, Dy, Ho, and Lu)

Manifestation of chemical pressure: Magnetism and magnetostriction in nanoscale RFeO₃ (R = Sm, Dy, Ho, and Lu)

The modulated oxygen evolution reaction performance of LaFeO₃ with abundant electronic structures via a design of stoichiometry offset