Study of Urbach energy and Kramers–Kronig on Mn and Zn doped NiFe2O4 ferrite nanopowder for the determination of structural and optical characteristics

N Nazari, MM Golzan, K Mabhouti - Scientific Reports, 2024 - nature.com
Abstract MxNi1-xFe2O4 spinel ferrite (M= Mn, Zn, and x= 0, 0.05) has been successfully
synthesized by co-precipitation technique with hydrazine hydrate reduction agent (instead of …

Exploring the Interrelation between Urbach Energy and Dielectric Constant in Hf-Substituted BaTiO3

OV Rambadey, A Kumar, A Sati, PR Sagdeo - ACS omega, 2021 - ACS Publications
The variation of dielectric constant (εr) in the low-frequency region (∼ 106 Hz) in Hf-
substituted BaTiO3 has been modelled considering the electronic disorder in the form of …

Experimental and electrical studies of zeolitic imidazolate framework-8 for the adsorption of different dyes

HA Kiwaan, FS Mohamed, NA El-Ghamaz… - Journal of Molecular …, 2021 - Elsevier
The zeolitic imidazole framework-8 (ZIF-8) was prepared in this study, which is a form of
metal organic framework (MOF). ZIF-8 was characterized using powder X-ray diffraction …

Detailed investigation on structural, optical, dielectric and magneto-dielectric properties with enhanced magneto-impedance characteristic of NdFeO3 nanoparticles

P Yadav, A Pandey, B Khan, R Biswal, A Fahad… - Materials Chemistry and …, 2023 - Elsevier
NdFeO 3 (NFO) was synthesized using sol-gel citrate method and subsequent calcination at
1023 K. Utilizing Rietveld refinement analysis of the XRD pattern, it has been verified that …

Temperature-Dependent Delocalization of Oxygen Vacancies in La-Substituted CeO2

M Gupta, SC Shirbhate, OV Rambadey… - ACS Applied Energy …, 2022 - ACS Publications
Signature of oxygen ion conductivity in hydrothermally synthesized Ce1–x La x O2− δ (0≤
x≤ 0.50) solid-electrolyte samples has been investigated. Room-temperature Raman …

Halide tuning in derivative organic–inorganic perovskites, MAPb(Br1-xClx)3 (x = 0–1): exploring structural, optical and vibrational characteristics

S Dutt, A Trivedi, OV Rambadey, PR Sagdeo… - Journal of Materials …, 2024 - Springer
Organic–inorganic metal halide perovskites (OIMHP's), particularly CH3NH3PbX3 (X= I, Br,
Cl) and their derivatives shows favorable properties for energy harvesting such as high …

Investigating the correlation between the Urbach energy and asymmetry parameter of the Raman mode in semiconductors

OV Rambadey, A Kumar, PR Sagdeo - Physical Review B, 2021 - APS
A quantitative correlation between the Urbach energy (E u) and asymmetry parameter q of
Raman spectra has been derived. For this purpose, the effect of electronic disorder (∼ E u) …

Analysis of structural disorder on Raman spectra of semiconductors

OV Rambadey, M Gupta, A Kumar… - Journal of Applied …, 2023 - pubs.aip.org
This Tutorial provides a fundamental discussion on the lattice dynamics of physical systems
introduced with disorder and, hence, the importance of Raman spectroscopy (RS) technique …

Role of Laser Excitation Wavelength and Power in the Fano Resonance Scattering in RFe0.50Cr0.50O3 (R = Sm, Er, and Eu): A Brief Raman Study

A Kumar, OV Rambadey, H Rai… - The Journal of Physical …, 2022 - ACS Publications
Here in the present report, we have extensively studied the impact of the excitation laser
wavelength and laser power on the Raman spectrum of mixed Fe-Cr-based rare-earth …

Origin of natural and magnetic field induced polar order in orthorhombic

A Kumar, MK Warshi, A Sagdeo, M Krzystyniak… - Physical Review B, 2021 - APS
Here, we report the possible origin of natural and magnetic field induced polar order near
room temperature (RT) in Pr Fe 1/2 Cr 1/2 O 3. The temperature-dependent Raman …