Abstract The paragenesis of carbonate pseudomorphic textures in the rock record that are inferred to represent replaced metastable ikaite (CaCO3·6H2O), which forms at frigid temperatures, is uncertain. Petrographic analysis Mono Lake (California, USA) Pleistocene tufas allowed recognition a distinctive calcite microtexture, termed guttulatic calcite, during dehydration and diagnostic for precur...

In this paper the potential of utilizing strain for suppressing impact ionization is evaluated. It is found that if compressive strain is introduced without altering the bandgap (e.g. by using properly tailored InGaAlAs alloys) the threshold energy for electron impact ionization is significantlv increased for both GaAs-based and InP-based materials. Pseudomorphic devices such as n-type In,Ga, -...

We report on a systematic study of the growth of epitaxial TiO(2) films deposited by pulsed laser deposition on Ti-terminated SrTiO(3) (001) single crystals. By using in situ reflection high energy electron diffraction, low energy electron diffraction, x-ray photoemission spectroscopy, and scanning probe microscopy, we show that the stabilization of the anatase (001) phase is preceded by the gr...

Ti interdiffusion from the Ti/Pt/Au gate into the AlGaAs Schottky barrier layer (SBL) of 0.25-lm GaAs Pseudomorphic High Electron Mobility Transistors (PHEMTs) has been studied using the accelerated life testing technique. Based on measurements and modeling, analytical expressions for quantitative correlation between the positive pinch-off voltage (VP) shift as well as the saturation drain curr...