Novel smart materials with high curie temperatures: EuDyGeO, EuLaGeO and EuHoGeO.

The EuDyGeO, EuLaGeO and EuHoGeO powder were obtained through a solid-state reaction method via multistep firing of stoichiometric ratios of EuO, GeO, DyO, LaO and HoO in open atmosphere at temperatures from 800 to 1150 °C. The thermal behaviour, phase formation, SEM/EDX analysis, photoluminescence properties, Curie tempereture, dielectric and piezoelectric properties of the samples were investigated by TG/DTA, XRD, SEM, PL, TG/DTA, LCR-meter and d-meter, respectively. The germenates having triclinic crystal system have D→F, D→F, D→F, D→F transitions of Eu ions.

The Investigation of the Effect of La, Eu, and Sm Ions on Photoluminescence and Piezoelectric Behavior of REYZrO (RE: Eu, Sm and Y: La, Sm, Eu) Pyrochlore-Based Multifunctional Smart Advanced Materials.

A series of compounds with the general formula REYZrO (where RE includes Eu, Sm and Y includes La, Sm, Eu) were synthesized using a solid-state reaction method. These compounds were analyzed through differential thermal analysis (DTA), thermogravimetric analysis (TG), X-ray powder diffraction (XRD), and scanning electron microscopy (SEM). Additionally, their dielectric constant, loss tangent, piezoelectric charge constant, and Curie temperature were measured using an LCR meter, d meter, and TG/DTA.

Photoluminescence and piezoelectric behaviour of Y Zr O pyrochlore-based multifunctional materials and the influence of Eu and Sm.

Y Zr O -doped with Eu and Sm phosphors were prepared for the first time as multifunctional smart materials using a solid-state reaction method at 1400 C. Thermal behaviour, crystal structure, surface morphology, and elemental analysis were characterized using thermogravimetric (TG) and differential thermal (DTA) analyses, X-ray diffraction (XRD) and scanning electron microscope equipped with energy-dispersive X-ray spectroscopy (SEM-EDX). Experimental results revealed that both phosphors have a pyrochlore structure with a cubic crystal system.

UV/visible light active CuCrO nanoparticle-SnO nanofiber p-n heterostructured photocatalysts for photocatalytic applications.

CuCrO2 nanoparticle decorated SnO2 nanofiber composites have been prepared as novel p-n heterostructured semiconductor photocatalysts for the degradation of organic pollutants in wastewater. The composite structure was achieved via drop casting of various amounts of hydrothermally derived CuCrO2 nanoparticles on electrospun SnO2 nanofibers. The microstructural and morphological features of each semiconductor and the formation of p-n heterojunctions between them were characterized.