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Title: Study of liquid gallium as a function of pressure and temperature using synchrotron x-ray microtomography and x-ray diffraction

The volume change of liquid and solid gallium has been studied as a function of pressure and temperature up to 3.02 GPa at 300 K and up to 3.63 GPa at 330 K using synchrotron x-ray microtomography combined with energy dispersive x-ray diffraction techniques. Two sets of directly measured P-V data at 300 K and 330 K were obtained from 3D tomography reconstruction data, and the corresponding isothermal bulk moduli were determined as 23.6 (0.5) GPa and 24.6 (0.4) GPa, respectively. The existence of a liquid-liquid phase transition region is proposed based on the abnormal compressibility of Ga melt at about 2.44 GPa and 330 K conditions.
Authors:
 [1] ;  [2] ; ;  [1] ;  [2] ; ; ;  [3] ;  [1] ;  [4] ;  [5] ;  [2] ;  [1] ;  [6]
  1. Harbin Institute of Technology, Harbin 150080 (China)
  2. (United States)
  3. GeoSoilEnviroCARS, Center for Advanced Radiation Sources, The University of Chicago, Chicago, Illinois 60637 (United States)
  4. Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  5. Center for High Pressure Science and Technology Advanced Research, Changchun 130015 (China)
  6. (China)
Publication Date:
OSTI Identifier:
22311362
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPRESSIBILITY; GALLIUM; LIQUID METALS; PHASE TRANSFORMATIONS; PRESSURE DEPENDENCE; PRESSURE RANGE GIGA PA; SOLIDS; SYNCHROTRON RADIATION; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; TOMOGRAPHY; X RADIATION; X-RAY DIFFRACTION