Ferroelectric polarization and strain

Ferroelectricity is a characteristic of certain materials that have a spontaneous electric polarization that can be reversed by the application of an external electric field.

R & A strain measurement device

R & A strain measurement device
R & A strain measurement device

The Radial and Axial Strain Gauge was developed to determine the strain of a piezoceramic sample in radial and axial direction while electric field is applied.

Maximum test voltage: 5000V
Typical sample size: Ø: 6 – 15 mm, height: 0.5 – 5 mm
Displacement transducer: Inductive displacement transducer
Principle of measurement: active half bridge -> expanded to a full bridge
Range: 2 mm
Nominal sensitivity: 80 mV/V
Maximum Temperature: 150°C
Required oil: Silicone oil (flashpoint > 300°C)

Polarization and Strain measurement setup

This is a home-made equipment to measure polarization and strain hysteresis loops of ferroic materials, equipped with a high voltage amplifier (Trek, up to 20 kV). The equipment can be used for temperature-dependent measurement up to 150 degrees Celsius. No limitation on sample size, as long as it can be placed on the sample stage. This is a dangerous high voltage measurement and requires special supervision.

Polarization and Strain measurement setup
Polarization and Strain measurement setup
Temperature limit up to 160 °C
Voltage limit 5kV
Sample geometry as small as 1mm by 1mm
Atmosphere air
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