Dielectric relaxation of glycerol and n-propyl alcohol at high pressure

• The dielectric relaxation of glycerol and n-propyl alcohol in the supercooled liquid state has been investigated at frequencies from 5 Hz to 13 MHz and at pressures up to 1 GPa. The high-pressure dielectric cell and the measurement procedures are described in detail. A significant broadening of the loss peak is observed for both liquids with increasing pressure. The results are discussed in terms of a many-body relaxation theory which accounts for increasing correlation of the relaxing dipoles at high pressure.

Ämnesord

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Nyckelord

High pressure

dielectric relaxation

n-propyl alcohol

glycerol

supercooling

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