Exploring the Interrelation between Urbach Energy and Dielectric Constant in Hf-Substituted BaTiO3
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 …
substituted BaTiO3 has been modelled considering the electronic disorder in the form of …
Temperature-Dependent Delocalization of Oxygen Vacancies in La-Substituted CeO2
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 …
x≤ 0.50) solid-electrolyte samples has been investigated. Room-temperature Raman …
Investigating the correlation between the Urbach energy and asymmetry parameter of the Raman mode in semiconductors
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) …
Raman spectra has been derived. For this purpose, the effect of electronic disorder (∼ E u) …
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 …
wavelength and laser power on the Raman spectrum of mixed Fe-Cr-based rare-earth …
Unorthodox Approach to Realize the Correlation between the Dielectric Constant and Electronic Disorder in Cr-Doped PrFeO3
A Kumar, OV Rambadey… - The Journal of Physical …, 2021 - ACS Publications
Here, in the present report, an attempt has been made to explore a quantitative correlation
between the Urbach energy (EU) and the dielectric constant (ε) by using a Bohr-like model …
between the Urbach energy (EU) and the dielectric constant (ε) by using a Bohr-like model …
Analysis of structural disorder on Raman spectra of semiconductors
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 …
introduced with disorder and, hence, the importance of Raman spectroscopy (RS) technique …
Origin of natural and magnetic field induced polar order in orthorhombic
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 …
room temperature (RT) in Pr Fe 1/2 Cr 1/2 O 3. The temperature-dependent Raman …
Methodology to Probe Disorder Contribution in Raman Linewidth via Optical Absorption Spectroscopy in Orthoferrite EuFeO3
The individual impact of disorder on different phonon modes has been investigated for
orthoferrite EuFeO3 by perceiving a correlation between temperature-dependent Raman …
orthoferrite EuFeO3 by perceiving a correlation between temperature-dependent Raman …
Probing the effect of R-cation radii on structural, vibrational, optical, and dielectric properties of rare earth (R= La, Pr, Nd) aluminates
The present study correlates the effect of R-cation radii on structural, vibrational, optical, and
dielectric properties of rhombohedral rare earth aluminates RAlO 3 (R= La, Pr, Nd). The …
dielectric properties of rhombohedral rare earth aluminates RAlO 3 (R= La, Pr, Nd). The …
Phonon-mode-specific lattice dynamical coupling of carriers in semiconductors using Raman and optical spectroscopic techniques
We demonstrate a methodology for quantitative estimation of electron-phonon coupling
(EPC) for each phonon mode taking base from second-order correction in polaron-energy …
(EPC) for each phonon mode taking base from second-order correction in polaron-energy …