The Laboratory
for Electronic Ceramics houses a well-equipped
suite of equipment for measuring a broad range
of electrical properties of materials over an exceptional
range of environments. Three LabView-controlled
environmental systems are designed to cover a very
broad range of measurement conditions. The various
systems can use an HP 4192 impedance analyzer ,
Solartron 12605W, or an HP 4274A LCR meter. These
meters cover low-field electrical parameters (10
µHz to 13 MHz) of capacitance, inductance, resistance,
impedance, dissipation factor and in special cases
electromechanical resonance. Three types of environmental
systems have temperature ranges of 20K to 25C,
150K to 195C and 25C to 1100C.
Controlled atmosphere
and measured oxygen content is available at 25C
and above. DC resistance and charge integration
options are also available to measure conduction
and pyroelectric response (Keithley 617 Electrometer
or HP 4140B pA meter). DC bias may be applied to,
at least, 200 VDC.
High power resistance can be
determined using a Sony/Tektronix 371 High Power
Curve Tracer. Piezoelectric characterization is
conducted by scalar (HP 3585A) and impedance circle
methods. A Berlincourt d33 meter is available.
Strain and polarization as a function of field
measurements can be conducted from 20K to 280C
at low frequencies. Room temperature impedance
is measured to 1Ghz by an HP4191A and dielectric
failure with a Hipotronics 750. Two additional
LabView-based systems are available for measuring
DC conductivity and combined conductivity and Seebeck
coefficient as a function of temperature and atmospheric
conditions.
For more information about research, contact Dr. Doreen Edwards or Dr. Walter Schulze.
For information about student training and equipment
maintenance, contact Fran Williams. |