Deposition of CaZrO3 thin films by EB-PVD: Effects of substrate on the composition, the structure, the morphology and the optical properties

Hkiri, Khaoula; Mohamed, Hamza Elsayed Ahmed; Khanyile, B.S.; Mtshali, C.; Nkosi, M.; Salem, M. Ben; Mâaza, M.; Zouaoui, M.

doi:10.1016/j.surfin.2021.101259

Cited by 5 publications

(2 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 51,52 ] For reference, CZO 4.38–3.85 eV optical bandgaps were measured, and bandgaps of 4.1–3.3 eV were calculated. [ 53–55 ] SZO optical bandgap values ranging from 5.5 to 3.5 eV were previously stated, depending on the synthesis method and morphology. [ 13,56,57 ] The bandgaps of zirconates can be altered by the defects, that is, oxygen vacancies, strain, and lattice mismatches.…”

Section: Resultsmentioning

confidence: 97%

See 1 more Smart Citation

3D‐Architected Alkaline‐Earth Perovskites

Winczewski,

Arriaga Dávila,

Herrera‐Zaldívar

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

Three‐dimensional (3D) ceramic architectures are captivating geometrical features with an immense demand in photonics. Here, we develop an additive manufacturing (AM) approach for printing alkaline‐earth perovskite 3D microarchitectures. The newly developed approach enables custom‐made photoresists suited for two‐photon lithography, permitting the production of alkaline‐earth perovskite (BaZrO3, CaZrO3, and SrZrO3) 3D structures shaped in the form of octet‐truss lattices, gyroids or inspired architectures like sodalite zeolite, and C60 buckyball with micrometric and nanometric feature sizes. Alkaline‐earth perovskite morphological, structural, and chemical characteristics are studied. The optical properties of such perovskite architectures are investigated using cathodoluminescence and wide‐field photoluminescence emission to estimate the lifetime rate and defects in BaZrO3, CaZrO3, and SrZrO3. From a broad perspective, our AM methodology facilitates the production of 3D‐structured mixed oxides. Our findings are the first steps toward dimensionally‐refined high refractive index ceramics for micro‐optics and other terrains like (photo)catalysis.This article is protected by copyright. All rights reserved

show abstract

Section: Resultsmentioning

confidence: 97%

“…[13,56,57] The bandgaps of zirconates can be altered by the defects, that is, oxygen vacancies, strain, and lattice mismatches. [55,58] Therefore, the nature of some defects is unraveled optically. Access to interrogate BZO, CZO, and SZO microarchitectures is nontrivial.…”

Section: Optical Properties Of Bzo Czo and Szomentioning

confidence: 99%

3D‐Architected Alkaline‐Earth Perovskites

Winczewski,

Arriaga Dávila,

Herrera‐Zaldívar

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

show abstract

Electrical transport properties of YBa2Cu3Oy implanted by CdS nanoparticles: nanoparticle size effect

Hkiri,

Mohamed,

Shahzad

et al. 2023

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Cadmium sulfide nanoparticles size effects on the superconducting properties of YBa2Cu3Oy compound were investigated in details. Solid-state reaction method was used for the synthesis of samples with additional amounts of CdS nanoparticles with sizes 6 nm and 12 nm and an additional amount x = 0.1 wt%. Synthesis of cadmium nanoparticles was done by using aqueous methods and they were characterized by using transmission electron microscopy (TEM), X-ray diffraction (XRD). Optical absorption measurement of the as-synthesized nanoparticles was carried out, and the specific surface areas of the sample were analyzed using a surface area and porosity analyzer. Electrical resistivity and transport critical current densities were measured by using the four-probe technique. The measurements revealed that CdS (6 nm) added samples exhibit higher energy pinning and current densities as compared to pure YBa2Cu3Oy and with additional CdS (12 nm). This implies that the size reduction of CdS can give rise to effective pinning centers which can enhance the superconducting properties in the Y-123 materials.

show abstract