Cobalt-doped ZnO nanoparticles (NPs) with different Co concentrations are investigated by means of $X$- and $Q$-band electron spin resonance (ESR) near liquid-helium temperature in both parallel perpendicular modes. The high crystal quality the NPs allows for hyperfine-structure resolution within single ${\mathrm{Co}}^{2+}$ ions' ESR powder spectra. Depending on cobalt concentration, common add...

Abstract (Mn, N)- codoped ZnO thin films were prepared by two step process. Study of Magnetic anisotropy in Mn and N nanoparticles was studied. X-ray diffraction (XRD) &X-ray photoelectron spectroscopy (XPS) reveals that Manganese (Mn) Nitrogen (N) ions lattice exists as 2+ 3- . Hysteresis measurement shows at room temperature the samples show ferromagnetic nature also indicate are having m...

Zinc oxide (ZnO) is a largely investigated semiconducting nanomaterial for photocatalytic applications and an excellent active layer candidate in photovoltaics. Among native defects, having primary role ZnO optoelectronic properties, the influence of nearly ubiquitous planar faults wurtzite sequences ultrasmall (≤5 nm) nanocrystals (NCs) remains poorly understood. Here, we present thorough stud...

MgZnO alloys are potentially important semiconductors for UV optoelectronics and other applications. Since device heterostructures are under significant strain, it is important to determine the elastic properties of these materials, in the bulk and nanoscale. In this work, the equations of state were obtained for ZnO and MgxZn1 xO alloys under hydrostatic pressure, using x-ray diffraction. The ...