S. Pilla et al., Very high sensitivity ac capacitance bridge for the dielectric study of molecular solids at low temperatures, REV SCI INS, 70(10), 1999, pp. 4055-4058
An ac capacitance bridge with excellent stability and two parts per billion
resolution in the real part of the dielectric constant at temperatures ran
ging from 4.2 to 80 K and in the audio frequency range (0.2-20 kHz) is repo
rted. The method uses commercially available components as well as few home
made cables and capacitors. Construction details and data on the resolution
are presented. (C) 1999 American Institute of Physics. [S0034-6748(99)0281
0-5].