Molecular Dynamics Study of Structural and Transport Properties of Silver Iodide Using Effective Charges.

The superionic conductor, solid state, and body-centered cubic structure, silver iodide at room temperature, has been studied via molecular dynamics simulations. The calculated results using pairwise Coulomb-Buckingham potential, zero pressure on the sample, a semi-rigid model system of 1000 Ag and 1000 I ions, (NVE) as a statistical ensemble, and an effective charge of Z=0.63 for the pairs Ag-Ag and I-I, were found to be consistent with experimental data and one study using Z=0.

Effect of Ethylene Glycol: Citric Acid Molar Ratio and pH on the Morphology, Vibrational, Optical and Electronic Properties of TiO and CuO Powders Synthesized by Pechini Method.

High-purity TiO and CuO powders were synthesized by the Pechini method, an inexpensive and easy-to-implement procedure to synthetize metal oxides. The variables of synthesis were the ethylene glycol:citric acid molar ratio and the pH. High reproducibility of the anatase and tenorite phase was obtained for all synthesis routes.

Data on a temperature-dependent thermic and electrical properties of a novel blend polymeric system based on poly(vinyl alcohol), chitosan and phosphoric acid.

In this work, data on a temperature-dependent thermic and electrical properties in a novel blend polymer electrolyte membranes based on poly(vinyl alcohol) (PVA) and chitosan (CS) doped with HPO at different concentrations were prepared by solution casting method. Their phase behavior and ionic conductivity were studied by DSC, TGA and IS. These membranes exhibit good proton conductivity of the order of 10 Scm at 200 °C and the understanding of the HPO at different concentrations effect in the polymer electrolyte membranes is crucial for possible applications in fuel cells.

Hybrid Superconducting-Ferromagnetic [Bi₂Sr₂(Ca,Y)₂Cu₃O](LaBaMnO₃) Composite Thick Films.

We report here on the development of composite thick films exhibiting hybrid superconducting and ferromagnetic properties, produced through a low-cost, fast, and versatile process. These films were made of high T cuprate superconductor Bi₂Sr₂(Ca,Y)₂Cu₃O (with Y:Ca ratio of 5%) and ferromagnetic perovskite LaBaMnO₃, synthesized by melting-quenching annealing process on a MgO substrate. Curie temperature for LaBaMnO₃ was determined (~336 K ) by magnetic field assisted thermogravimetric analysis (TGA), while superconducting behavior of Bi₂Sr₂(Ca,Y)₂Cu₃O/MgO films was observed through temperature-dependent resistance measurements.