Search Results - "Datchi, F."
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Metallization of Shock-Compressed Liquid Ammonia
Published in Physical review letters (15-01-2021)“…Ammonia is predicted to be one of the major components in the depths of the ice giant planets Uranus and Neptune. Their dynamics, evolution, and interior…”
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Melting Curve and Isostructural Solid Transition in Superionic Ice
Published in Physical review letters (02-11-2020)“…The phase diagram and melting curve of water ice is investigated up to 45 GPa and 1600 K by synchrotron x-ray diffraction in the resistively and laser heated…”
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Observation of a Plastic Crystal in Water–Ammonia Mixtures under High Pressure and Temperature
Published in The journal of physical chemistry letters (09-03-2023)“…Solid mixtures of ammonia and water, the so-called ammonia hydrates, are thought to be major components of solar and extra-solar icy planets. We present here a…”
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Melting curve of superionic ammonia at planetary interior conditions
Published in Nature physics (01-09-2023)“…Under high pressures and temperatures, molecular systems with substantial polarization charges, such as ammonia and water, are predicted to form superionic…”
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Experimental and theoretical evidence for an ionic crystal of ammonia at high pressure
Published in Physical review. B, Condensed matter and materials physics (08-05-2014)“…We report experimental and theoretical evidence that solid molecular ammonia becomes unstable at room temperature and high pressures and transforms into an…”
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Topologically frustrated ionisation in a water-ammonia ice mixture
Published in Nature communications (20-10-2017)“…Water and ammonia are considered major components of the interiors of the giant icy planets and their satellites, which has motivated their exploration under…”
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Author Correction: Melting curve of superionic ammonia at planetary interior conditions
Published in Nature physics (01-09-2023)Get full text
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Performances of a VIPA-based spectrometer for Brillouin scattering experiments in the diamond anvil cell under laser heating
Published in High pressure research (03-07-2022)“…VIPA-based Brillouin spectroscopy is implemented for in-situ measurements at high pressure and temperature in laser-heated diamond anvil cells. Its…”
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Proton disorder and superionicity in hot dense ammonia ice
Published in Physical review letters (19-04-2012)“…We report the experimental discovery of a new phase of ammonia ice, stable at pressures above 57 GPa and temperatures above 700 K. The combination of our…”
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Optical pressure sensors for high-pressure-high-temperature studies in a diamond anvil cell
Published in High pressure research (01-12-2007)“…We review the various optical pressure sensors that are suitable for high-pressure and high-temperature studies in a diamond anvil cell. Two different kinds of…”
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Local structure of condensed Zinc Oxide
Published in Physical review. B, Condensed matter and materials physics (01-09-2003)“…The high pressure local structure of zinc oxide has been studied at room temperature using combined energy dispersive X-ray diffraction and X-ray absorption…”
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Molecular carbon dioxide at high pressure and high temperature
Published in Europhysics letters (01-02-2007)“…The existence of intermediate states between the molecular and non-molecular forms of carbon dioxide has been actively debated in the recent past. Here we…”
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CO2-helium and CO2-neon mixtures at high pressures
Published in The Journal of chemical physics (28-01-2013)“…The properties of mixtures of carbon dioxide with helium or neon have been investigated as a function of CO(2) concentration and pressure up to 30 GPa at room…”
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Trapping of cubic ZnO nanocrystallites at ambient conditions
Published in Applied physics letters (16-12-2002)“…Dense powder of nanocrystalline ZnO has been recovered at ambient conditions in the metastable cubic structure after a heat treatment at high pressure (15 GPa…”
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X-ray diffraction study of the evolution of Fe-filled multiwalled carbon nanotubes under pressure
Published in The European physical journal. B, Condensed matter physics (01-11-2009)“…We present in situ high pressure X-ray diffraction experiments on multi-walled carbon nanotubes (MWNTs) filled with iron-based nanowires. In addition to our…”
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Equation of state of cubic boron nitride at high pressures and temperatures
Published in Physical review. B, Condensed matter and materials physics (06-06-2007)“…We report accurate measurements of the equation of state (EOS) of cubic boron nitride by x-ray diffraction up to 160 GPa at 295 K and 80 GPa in the range…”
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Pressure induced phase transitions in amorphous Ge
Published in Physica scripta (01-01-2005)“…Amorphous germanium (a-Ge) structure is known to show a complex behavior upon pressurization. Here an XAS experiment on a-Ge at high pressure and temperature…”
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Melting curve of superionic ammonia at planetary interior conditions
Published in Nature physics (01-09-2023)“…Under high-pressures and temperatures, molecular systems with substantial polarization charges, such as ammonia and water, are predicted to form superionic…”
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Solid ammonia at high pressure: A single-crystal x-ray diffraction study to 123 GPa
Published in Physical review. B, Condensed matter and materials physics (01-05-2006)“…The high-pressure phases of solid ammonia have been investigated by x-ray diffraction in a diamond anvil cell at room temperature. Despite the first-order…”
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