نتایج جستجو برای: tantalum
تعداد نتایج: 2547 فیلتر نتایج به سال:
Strain-engineering is a powerful means to tune the polar, structural, and electronic instabilities of incipient ferroelectrics. KTaO3 near polar instability shows anisotropic superconductivity in electron-doped samples. Here, we demonstrate growth high quality thin films by molecular-beam epitaxy. Tantalum was provided both suboxide source emanating TaO2 flux from Ta2O5 contained conventional e...
Phase diagrams of refractory metals remain essentially unknown. Moreover, there is an ongoing controversy over the high-pressure melting temperatures of these metals: results of diamond anvil cell (DAC) and shock wave experiments differ by at least a factor of 2. From an extensive ab initio study on tantalum we discovered that the body-centered cubic phase, its physical phase at ambient conditi...
The radioactivity of (180m)Ta has never been detected. The present attempt to detect it was carried out using a newly developed HPGe sandwich spectrometer installed 500m water equivalent underground in the HADES laboratory. The sample consisted of 6 discs of tantalum of natural isotopic composition with a total mass of 1500 g and a total mass for (180)Ta of 180 mg. The sample was measured for 6...
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