Temperature-dependent phase transition: structural, optical, magnetic and dielectric properties of La2CuO4 perovskite nanoparticles

Sukumar, M.; Agila, M.; Sutha, A.; Ravi, V.; Al‐Enizi, Abdullah M.; Ubaidullah, Mohd; Samdani, Mohammad Shahzad; Ubaidullah, Mohd; Pandit, Bidhan

doi:10.1007/s10854-022-09301-7

Cited by 19 publications

(5 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dielectric constant of La1.95 Sr0.05CuO4±δ is about 2 × 105 much larger than that of La2CuO4 [11]. The increase in this constant was explained by the increase in the concentration of holes in the material [62]. For the cuprate Eu2CuO4, the dielectric constant was about 103-104 in the frequency range between 1 kHz and 1 MHz for the temperature range from 173 K to 423 K [63].…”

Section: Dielectric Propertiesmentioning

confidence: 93%

See 1 more Smart Citation

The Cuprate Ln₂CuO₄ (Ln: Rare Earth): Synthesis, Crystallography, and Applications

Marzouki¹

2023

Crystal Growth and Chirality - Technologies and Applications

View full text Add to dashboard Cite

This chapter is concerned with a study of undoped and doped cuprates of the general formula Ln2CuO4 (Ln = rare-earth metal) and Ln2–xMxCuO4±δ (Ln = rare earth and M = Sr, Ba, Ca, Ln’, Bi, and 3d metal). The crystal structures of the undoped and doped cuprates having the notations (T, T′, T*, S, and O), significantly depend, however, on the synthetic route. The topotactic synthesis is a specific method, which allows the transformation of the cuprate from the T to T′ structure. The importance of these materials originates from the discovery of the unconventional superconductors of the Ce-doped Ln2CuO4. The cuprate materials could function as insulators or semiconductors which are valuable tools in optoelectronic applications. The doped cuprate materials are good ionic conductors and are found useful as electrodes in fuel cell applications. The undoped cuprates reveal high dielectric properties.

show abstract

Section: Dielectric Propertiesmentioning

confidence: 93%

“…Throughout the UV-VIS-NIR region, the La2-xCaxCuO4 cuprates have a wide absorption band and a bandgap that increases linearly with the doping level at 0 ≤ x ≤ 0.12; which will respond effectively to its use as a photocatalyst [62,69].…”

Section: Optical Properties Of Cupratementioning

confidence: 99%

The Cuprate Ln₂CuO₄ (Ln: Rare Earth): Synthesis, Crystallography, and Applications

Marzouki¹

2023

Crystal Growth and Chirality - Technologies and Applications

View full text Add to dashboard Cite

show abstract

“…The reason for this discrepancy is that the ionic radiuses of Cu 2+ radius = 0.60Å and Co 2+ radius = 0.72Å are different. Debye Scherer's formula [24], which is provided in Eq. ( 2), was used to get the average crystallite size (D).…”

Section: Xrd Analysismentioning

confidence: 99%

“…88-0940). The diffraction peaks at 2θ values around 24 ) and hexagonal (La 2 O 3 , space group P-3m1). The strength of the peaks associated with the hexagonal phase steadily increases with increasing Co 2+ content.…”

Section: Xrd Analysismentioning

confidence: 99%

Effect of Co 2+ substituted La 2 CuO 4 nanoparticles: Structural, morphological, optical and magnetic behaviour

Dash,

Yuvaraj,

Jothiramalingam

et al. 2024

Preprint

Self Cite

View full text Add to dashboard Cite

Impact of Co2+ doping on the properties of the structural, magnetic, functional and optical of La2CuO4 system formed by combustion process. Every sample of lanthanum cuprate was examined. The development of single-phase orthorhombic crystals with a Bmab space group was verified by X-ray diffraction patterns. The monophasic orthorhombic lattice structure of the material has crystallite size that falls between 28 and 41 nm. The lattice constant falls between a = 5.361 Å − 5.349 Å, b = 5.410 Å − 5.399 Å & c = 13.160 Å − 13.148 Å. The XRD of La2CuO4 perovskite nanomaterials correspond well with the calculated ones, with χ2 values closer to 1. Energy gap values decreases from 1.75 to 1.68 eV due to the quantum confinement. The hysteresis curves recorded at 300 K show that coercivity ranges from 210.09 to 177.37 Oe as the content decreases, confirming that the crystallite size increase. The samples were with soft ferromagnetic behavior found in the VSM study.

show abstract

“…Tauc relation is utilized to measure the optical band gap values. The diffused re ectance (R) is converted into absorption co-e cient (α) through the function of Kubelka-Munk as given below, [29].…”

Section: Uv-visible Diffused Re Ectance Spectroscopy (Drs) Analysismentioning

confidence: 99%

Microwave Combustion Synthesis of La1-xGdxFeO3 (x = 0 to 0.25) Nanoparticles: Structural, Magnetic, Vibrational, Morphology and Optical Behavior

Yuvaraj,

Roniboss,

Kumar

et al. 2023

J Inorg Organomet Polym

Self Cite

View full text Add to dashboard Cite

La 1 − x Gd x FeO 3 (x = 0 to 0.25) nanoparticles are prepared by microwave combustion process (MCP) with L-alanine as a fuel. The synthesized samples are con rmed by different instrumental characterization for evaluating the nanostructured materials such as XRD, TEM, SAED, XPS, FE-SEM, EDX, FTIR, DRS-UV and VSManalysis.XRD and FT-IR are con rmed that lanthanum ferrite was orthorhombic structure with average crystallite size ranged 57.8 to 37.9 nm. The energy gap values were estimated using UV-vis spectra and it is in the range between 2.17 and 2.43 eV. The elements like Gd, La, Fe and O are present in EDX and XPS analysis. FE-SEM images reveal aggregated spherical morphology. VSM analysis are shows strong ferro magnetic behavior of La 1−x Gd x FeO 3 nanoparticles. The M s and M r values are in the range between1.06 to 1.71and 1.94 to 6.53 emu/g for La 1−x Gd x FeO 3 respectively.

show abstract

Temperature-dependent phase transition: structural, optical, magnetic and dielectric properties of La2CuO4 perovskite nanoparticles

Cited by 19 publications

References 38 publications

The Cuprate Ln₂CuO₄ (Ln: Rare Earth): Synthesis, Crystallography, and Applications

The Cuprate Ln₂CuO₄ (Ln: Rare Earth): Synthesis, Crystallography, and Applications

Effect of Co 2+ substituted La 2 CuO 4 nanoparticles: Structural, morphological, optical and magnetic behaviour

Microwave Combustion Synthesis of La1-xGdxFeO3 (x = 0 to 0.25) Nanoparticles: Structural, Magnetic, Vibrational, Morphology and Optical Behavior

Contact Info

Product

Resources

About

Temperature-dependent phase transition: structural, optical, magnetic and dielectric properties of La2CuO4 perovskite nanoparticles

Cited by 19 publications

References 38 publications

The Cuprate Ln2CuO4 (Ln: Rare Earth): Synthesis, Crystallography, and Applications

The Cuprate Ln2CuO4 (Ln: Rare Earth): Synthesis, Crystallography, and Applications

Effect of Co 2+ substituted La 2 CuO 4 nanoparticles: Structural, morphological, optical and magnetic behaviour

Microwave Combustion Synthesis of La1-xGdxFeO3 (x = 0 to 0.25) Nanoparticles: Structural, Magnetic, Vibrational, Morphology and Optical Behavior

Contact Info

Product

Resources

About

The Cuprate Ln₂CuO₄ (Ln: Rare Earth): Synthesis, Crystallography, and Applications

The Cuprate Ln₂CuO₄ (Ln: Rare Earth): Synthesis, Crystallography, and Applications