New solid solution with the general formula of LaAl1-xZnxO3-1/2x was prepared by a solid-state reaction route. According to XRD, crystal structure LaAlO3 is rhombohedral, while possesses cubic symmetry. Homogeneity region narrow and limited maximum concentration 5 mol. %. Computer simulations using crystalochemistry density functional theory approaches showed that has high energy barriers for O...

Ž . The ab-plane optical reflectance of single crystal of Bi Sr Ca Cu Ni O , for xs0.0215, has been measured 2 2 1yx x 2 8qd y1 Ž . from 80 to 40 000 cm 10 meV–5 eV and at temperatures between 20 and 300 K. Through Ni substitution, the optical conductivity shows a broad peak at about 400 cm, which grows in intensity and shifts to lower frequency as the temperature is reduced. We suggest that th...

In this research work, the original 45S5 bioactive glass was modified by introducing zinc and/or strontium oxide (6 mol%) in place of calcium oxide. Sr was added for its ability to stimulate bone formation and Zn for its role in bone metabolism, antibacterial properties, and anti-inflammatory effect. The glasses were produced by means of melting and quenching process. SEM and XRD analyses evide...

Correlated Dirac semimetal phases emerge in lightly doped (Tb- or La-doped) Mott insulator ${\mathrm{Sr}}_{2}\mathrm{Ir}{\mathrm{O}}_{4}$, where a $d$-wave symmetry-breaking order underlying pseudogap plays crucial role determining the nature of degeneracy, i.e., whether it is line node point node. Here, using realistic five-orbital tight-binding model with Hubbard $U$ and semiclassical Boltzma...