Maxwell–Wagner Relaxation-Driven High Dielectric Constant in Al2O3/TiO2 Nanolaminates Grown by Pulsed Laser Deposition

PS Padhi, SK Rai, H Srivastava… - … Applied Materials & …, 2022 - ACS Publications
Multilayer nanolaminates (NLs) of alternate ultrathin sublayers of Al2O3 and TiO2 (ATA) with
the thickness ranging∼ 2 to 0.5 nm were fabricated by optimized pulsed laser deposition …

Process temperature-dependent interface quality and Maxwell–Wagner interfacial polarization in atomic layer deposited Al 2 O 3/TiO 2 nanolaminates for energy …

PS Padhi, RS Ajimsha, SK Rai, UK Goutam, A Bose… - Nanoscale, 2023 - pubs.rsc.org
Considering the excellent tunability of electrical and dielectric properties in binary metal
oxide based multi-layered nanolaminate structures, a thermal atomic layer deposition …

Improvement of high energy X-ray optical performance of W/Si supermirror by optimizing interface compounds using ultra-thin buffer layer

S Atwal, P Sarkar, K Bhattacharyya, PN Rao, S Rai… - Applied Surface …, 2024 - Elsevier
The high energy spectral properties of X-ray supermirrors are governed mainly by the
interface diffusion and compound formation at the interfaces. Using ion beam sputtering …

Evolution of interface and surface morphology of WC/SiC multilayers with increase in number of bilayers

Z Wang, T Li, Z Zhang, C Chang, J **a, Z Zhang… - Vacuum, 2024 - Elsevier
WC/SiC multilayer mirrors are promising elements for operation in the short wavelength
range of hard X-rays and even gamma-rays. A set of WC/SiC multilayers with nominal …

Role of C and B 4 C barrier layers in controlling diffusion propagation across the interface of Cr/Sc multilayers

P Sarkar, A Biswas, R Kumar, S Rai, SN Jha… - Physical Chemistry …, 2023 - pubs.rsc.org
The optical performance of low-bilayer-thickness metallic multilayers (ML) can be improved
significantly by limiting the intermixing of consecutive layers at the interfaces. Barrier layers …

Effect of annealing on layer intermixing in nanoscale Cr/Ti multilayers depending on the period value

EO Filatova, AV Karataev, AU Gaisin… - Applied Surface …, 2024 - Elsevier
The effect of annealing on the intermixing of thin Ti and Cr layers and their crystallinity in
multilayer structures was studied using XPS, TEM, XRR and XRD methods. Multilayer …

X‐ray standing wave assisted XANES for depth dependent chemical state analysis of Cr in Cr2O3/Cr bilayer structure

A Trivedi, MA Alam, A Khooha… - Surface and …, 2024 - Wiley Online Library
We report the detailed depth‐dependent structural and chemical analysis of the Cr2O3/Cr
bilayer structure deposited on Si˂ 100˃ substrate. The non‐destructive simultaneous X‐ray …

Narrowband aperiodic multilayers with flat spectral response for plasma diagnostics

Z Yang, J Zhu, Y Zhu, Z Li, H Luo, S Si, L Zhao - Vacuum, 2022 - Elsevier
Aperiodic W/Si multilayer mirrors with the narrow bandwidth and the flat spectral response
are presented as X-ray reflectors operated at 8.05 keV for plasma diagnostics. In this …

Interface modification of Cr/Ti multilayers with C barrier layer for enhanced reflectivity in the water window regime

P Sarkar, A Biswas, N Abharana, S Rai… - Synchrotron …, 2021 - journals.iucr.org
The influence of a carbon barrier layer to improve the reflectivity of Cr/Ti multilayers,
intended to be used in the water window wavelength regime, is investigated. Specular …

Impact of B4C buffer layer on interface diffusion in Cr/Sc multilayers: combined study by x-ray reflectivity, scattering and fluorescence

P Sarkar, A Biswas, S Rai, MH Modi, G Ghorai… - Physica …, 2024 - iopscience.iop.org
In thin film multilayer based optical componentsof x-ray imaging system, diffusion of one
material into the other degrades the reflectivity of the mirrors severely. Along with this …