The effect of hydrostatic pressure up to 27 GPa on the Raman scattering (RS) in bulk HfS$_2$ is investigated. There are two transformations RS spectra, which take place during compression at between 5.7 and 9.8 as well 12.8 15.2 GPa. Seven vibrational modes can be observed after transformation, compared four before transformation. change suggests structural material yet unknown nature. frequenc...

Abstract We report studies on the effect of substituting magnetic Fe 3+ cations with nonmagnetic Al in Y-type hexaferrite Ba 0.5 Sr 1.5 Zn 2 11.92 0.08 O 22 powders their properties and especially phase transitions responsible for observing magnetoelectric effect. In this research, were synthesized by citric acid sol-gel auto-combustion. After auto-combustion process, precursor annealed at 1170...

Chalcogenide phase-change materials combine a remarkable set of properties that makes them promising candidates for future non-volatile memory applications. Binary data storage exploits the high contrast in electrical and optical between covalent amorphous metavalent crystalline phase. Here authors perform an analysis liquid phase kinetics material Ge3Sb6Te5, which is key to ultrafast switching...

objective: in this study efficacy of sub lingual misoprostol was examined in comparison to oxytocin (i.v.) for inducing of labor in term pregnancy. materials and methods: seventy patients were allocated by blocked randomization to groups a (n=35, sub lingual misoprostol 25 μg four hourly to maximum of 5 doses) and b (n=35, continuous oxytocin infusion). results: delivery active phase and total ...