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Abstract:
Nanoparticulate gallium can be obtained in an unconfined state by
reduction of gallium-acetylacetonate with LiAlH4. The products were
analyzed by scanning electron microscopy, elemental analysis together
with X-ray diffraction, and thermal analysis. EXAFS investigations
reveal, in accordance with the results from thermal analyses, that the
particles are liquid at room temperature. The reason for the lower
melting point could not be clarified within this study and might be
caused either by the lower melting point of -gallium or by the small
particle size of 10-20 nm. Upon cooling, several of the low-temperature
modifications of gallium are observed depending on cooling-rate and
temperature.
