نتایج جستجو برای: tantalum

تعداد نتایج: 2547  

Journal: :Solvent Extraction Research and Development, Japan 2013

Journal: :Journal of the Japan Society of Powder and Powder Metallurgy 2005

Journal: :Acta Chemica Scandinavica 1949

Journal: :Journal of Phase Equilibria 2001

Journal: :Journal of vacuum science & technology 2023

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...

Journal: :Physical review letters 2010
L Burakovsky S P Chen D L Preston A B Belonoshko A Rosengren A S Mikhaylushkin S I Simak J A Moriarty

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...

Journal: :Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine 2009
Mikael Hult J S Elisabeth Wieslander Gerd Marissens Joël Gasparro Uwe Wätjen Marcin Misiaszek

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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