Synthesis of neodymium-doped barium nanoferrite: Analysis of structural, optical, morphological, and magnetic properties

Ahilandeswari, E.; Kanna, R. Rajesh; Sakthipandi, K.

doi:10.1016/j.physb.2020.412425

Cited by 43 publications

(5 citation statements)

References 53 publications

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“…Since earlier Nd‐doped BaFe 2 O 4 was considered as a material for use in electronic devices for wireless communication, 6–9 special attention has been paid to a possible Nd substitution for Fe. The sample of nominal composition “BaFe 1.9 Nd 0.1 O 4 ” was equilibrated at 1373 K for 120 h. XRD shows that two‐phase mixture consisted of BaFe 2 O 4 and cubic Nd 0.3 Ba 0.7 FeO 3‐ δ remains unchanged after several prolonged annealing.…”

Section: Resultsmentioning

confidence: 99%

“…TGA measurements exhibit very small changes in oxygen content in Ba 1.1 Nd 1.9 Fe 2 O 7-δ with temperature in air (Figure 8), as expected for a ferrite with Fe cations almost all trivalent. Since earlier Nd-doped BaFe 2 O 4 was considered as a material for use in electronic devices for wireless communication, [6][7][8][9] special attention has been paid to a possible Nd substitution for Fe. The sample of nominal composition "BaFe 1.9 Nd 0.1 O 4 " was equilibrated at 1373 K for 120 h. XRD shows that two-phase mixture consisted of BaFe 2 O 4 and cubic Nd 0.3 Ba 0.7 FeO 3-δ remains unchanged after several prolonged annealing.…”

Section: N = 2 Ruddlesden-popper Ba 11 Nd 19 Fe 2 O 7-δ Oxidementioning

confidence: 99%

“…Recently partially Ba-substituted neodymium ferrites attracted increased attention due to various potential applications. For instance, Nd 1-x Ba x FeO 3-δ perovskite-type oxides were examined as promising cathode materials for intermediate-temperature solid oxide full cells (SOFCs), [1][2][3][4][5] the Nd-doped BaFe 2 O 4 composite was considered as a new material for use in electronic devices for wireless communication [6][7][8][9] and the permanent magnets of general formula BaFe 12 O 19 were modified by addition of Nd 2 O 3 in order to improve the magnetic properties of this hexaferrite. 10,11 It was shown that the doped compos-ites enriched in Ba 6 Nd 2 Fe 4 O 15 and BaFe 2 O 4 phases could absorb microwaves selectively in the X-band.…”

Section: Introductionmentioning

confidence: 99%

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Phase equilibria in the Nd₂O₃–BaO–Fe₂O₃ system: Crystal structure, oxygen content, and properties of intermediate oxides

et al. 2022

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The phase equilibria in the ½Nd 2 O 3 -BaO-½Fe 2 O 3 system were systematically studied at 1373 K in air and presented in the form of a phase diagram. By X-ray diffraction (XRD) analysis of quenched samples, the homogeneity ranges and crystal structure were determined for the following intermediate oxides: Nd 1-x Ba x FeO 3-δ with 0.0 ≤ x ≤ 0.05 (space group (SG) Pnma) and with 0.6 ≤ x ≤ 0.7 (SG Pm-3m), Ba 6+y Nd 2-y Fe 4 O 15-δ with 0.0 ≤ y ≤ 0.4 (SG P6 3 mc), and Ba 1.1 Nd 1.9 Fe 2 O 7-δ (SG P4 2 /mnm). The structural parameters of single-phase oxides were refined by the Rietveld method. The changes in oxygen content for Nd 1-x Ba x FeO 3-δ (0.6 ≤ x ≤ 0.7), Ba 6 Nd 2 Fe 4 O 15-δ , and Ba 1.1 Nd 1.9 Fe 2 O 7-δ versus temperature in air were determined by thermogravimetric analysis. Gradual substitution of neodymium by barium in the Nd 1-x Ba x FeO 3-δ (0.6 ≤ x ≤ 0.7) oxides leads to a decrease of oxygen content. Partial ordering via formation of separate domains with a p × a p × 5a p superstructure in Nd 0.4 Ba 0.6 FeO 3-δ , which cannot be detected by XRD, noticeably influence its thermal expansion and electrical conductivity.

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Section: Resultsmentioning

confidence: 99%

Section: N = 2 Ruddlesden-popper Ba 11 Nd 19 Fe 2 O 7-δ Oxidementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phase equilibria in the Nd₂O₃–BaO–Fe₂O₃ system: Crystal structure, oxygen content, and properties of intermediate oxides

et al. 2022

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“…In Fig. 5b, the SEM micrograph depicts that the structure of MF was altered completely post modi cation [52].…”

Section: Sem Analysismentioning

confidence: 99%

Synthesis, structural characterization and effect of surface modification on magnetization of hybrid manganese ferrite nanoparticle

Dan

Chattree

Naskar

et al. 2022

Preprint

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Paramagnetic Poly-methyl methacrylate (PMMA) and Poly ethylene glycol (PEG) functionalized manganese ferrite (PMMA-PEG-MF) nanoparticles were synthesized through a facile and efficient method. The resulting nanoparticles (NPs) were characterized using PSA, EDX, FT-IR, TEM, XRD, SEM, TGA and VSM techniques. The PMMA-PEG-MF NPs were nanocrystalline and depicted plate like particles with a mean size of around 70 nm as compared to the size of the MnFe2O4 nanoparticles which was observed to be 66 nm. The EDX validated the existence of metal ions and the modifiers (polymethylmethacrylate and polyethylene glycol) in the NPs. The FTIR confirmed the functionalization of MnFe2O4 NPs with PMMA and PEG. The XRD studies revealed that the synthesized MF and PMMA-PEG-MF NPs were crystalline and had a cubic spinel structure with a crystallite size of 14.64 nm and 14.42 nm and lattice parameter was calculated to be 6.20 Å and 3.90 Å respectively. The SEM micrograph revealed highly agglomerated nanostructures in the MnFe2O4 NPs; however, the extent of agglomeration reduced significantly post modification with PMMA and PEG. The TGA study exhibited an overall weight loss of 2.86% and 25.11% for MnFe2O4 and PMMA-PEG-MF NPs respectively. Magnetization measurements showed a substantial reduction in the saturation magnetization (Ms) and magnetic moment (µB) after modifying MnFe2O4 with PMMA and PEG. A saturation magnetization of 0.0056 emu/g was derived for PMMA and PEG modified MnFe2O4 NPs, as compared to 23 emu/g for MnFe2O4 magnetic NPs, suggesting paramagnetic behaviour of the synthesized NPs.

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“…The obtained high intense peak at 35.5 o corresponds to plane values (201) respectively. The average crystallite size can be calculated from the Debye Scherrer equation [27][28].…”

Section: Xrd Analysismentioning

confidence: 99%

Structural, Optical and Electrical Properties of V2O5 Thin films at different Molarities by Spray pyrolysis method

Fathima

Punithavthy

et al. 2022

J. Nig. Soc. Phys. Sci.

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Nowadays, Semiconducting thin films are the efficient candidates for good optical and electrical properties. In this study, the thin films of pure V2O5 together with 2 different molarities were prepared through the method of spray Pyrolysis. The prepared thin films were characterized by spectrographic tools such as XRD, FT-IR, UV-Vis and Hall effect to study their, crystalline nature, Functional group, band gap, resistivity, conductivity and mobility of the flow of electrons respectively. The structural morphology of the synthesized thin films was discussed through the micrographic image obtained from Scanning electron microscopy together with their surface occupancy plots. The obtained minimum crystallite size is about 26.8 nm for 4% molarities. The morphological and structural studies show enhanced results for 4% sample which makes it a viable candidature for optical and electrical applications.

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Synthesis of neodymium-doped barium nanoferrite: Analysis of structural, optical, morphological, and magnetic properties

Cited by 43 publications

References 53 publications

Phase equilibria in the Nd₂O₃–BaO–Fe₂O₃ system: Crystal structure, oxygen content, and properties of intermediate oxides

Phase equilibria in the Nd₂O₃–BaO–Fe₂O₃ system: Crystal structure, oxygen content, and properties of intermediate oxides

Synthesis, structural characterization and effect of surface modification on magnetization of hybrid manganese ferrite nanoparticle

Structural, Optical and Electrical Properties of V2O5 Thin films at different Molarities by Spray pyrolysis method

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Synthesis of neodymium-doped barium nanoferrite: Analysis of structural, optical, morphological, and magnetic properties

Cited by 43 publications

References 53 publications

Phase equilibria in the Nd2O3–BaO–Fe2O3 system: Crystal structure, oxygen content, and properties of intermediate oxides

Phase equilibria in the Nd2O3–BaO–Fe2O3 system: Crystal structure, oxygen content, and properties of intermediate oxides

Synthesis, structural characterization and effect of surface modification on magnetization of hybrid manganese ferrite nanoparticle

Structural, Optical and Electrical Properties of V2O5 Thin films at different Molarities by Spray pyrolysis method

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Phase equilibria in the Nd₂O₃–BaO–Fe₂O₃ system: Crystal structure, oxygen content, and properties of intermediate oxides

Phase equilibria in the Nd₂O₃–BaO–Fe₂O₃ system: Crystal structure, oxygen content, and properties of intermediate oxides