نتایج جستجو برای: pressure broadening
تعداد نتایج: 418582 فیلتر نتایج به سال:
Pressure- and temperature-induced phase transitions have been studied for more than a century but very little is known about the non-equilibrium processes by which the atoms rearrange. Shock compression generates a nearly instantaneous propagating high-pressure/temperature condition while in situ X-ray diffraction (XRD) probes the time-dependent atomic arrangement. Here we present in situ pump-...
Raman spectra of La(0.75)Ca(0.25)MnO(3) have been collected for the first time over a wide pressure range (0-14 GPa) using a diamond anvil cell. The frequency range explored (200-1100 cm(-1)) and the very good quality of the data allowed us to carefully analyze the pressure evolution of the phonon modes of the MnO(6) octahedra. The results show an abrupt transition at approximately 7.5 GPa with...
Conventional blind search techniques generally assume that the goal nodes for a given problem are distributed randomly along the fringe of the search tree. We argue that this is often invalid in practice, suggest that a more reasonable assumption is that decisions made at each point in the search carry equal weight, and show that a new search technique that we call iterative broadening leads to...
The NMR spectrum of FeSe shows a dramatic broadening on cooling towards the bulk nematic phase at ${T}_{s}=90$ K, due to formation quasistatic, short-range-ordered domain structure. However, quantitative understanding and its relationship susceptibility is still lacking. Here, we show that temperature pressure dependence in agreement with mean-field Edwards-Anderson parameter an Ising-nematic m...
In this study, severe plastic deformation through high-pressure sliding (HPS) was applied for in situ high-energy X-ray diffraction analysis at SPring-8 JASRI (Japan Synchrotron Radiation Research Institute). Allotropic transformation of pure Ti examined terms temperatures, pressures and imposed strain using a miniaturized HPS facility. The true pressure on the sample estimated from peak shift....
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