Ferroelectric testers are widely used in fields such as materials science, electronic engineering, and new energy. Their core function is to verify whether ferroelectric materials have the key characteristic of "spontaneous polarization can be reversed by external electric fields", providing data support for the research and production of devices such as ferroelectric memory, piezoelectric sensors, and pyroelectric detectors. The core of a ferroelectric tester is to measure the polarization strength, current, and other response signals of materials by applying a controllable electric field, in order to analyze their ferroelectric properties.
core functionality
Hysteresis loop test: By applying different waveform voltage signals, collect material charge or deformation signals, and analyze the polarization characteristics of the material.
Leakage current measurement: Evaluate the current leakage of materials under an electric field and reflect the stability of the materials.
Residual polarization test: measures the residual polarization strength of a material after power failure, reflecting the material's memory characteristics.
Extension function: Some models support joint testing of pyroelectric, piezoelectric, etc., and can be extended to testing in high and low temperature environments (such as -180~3000 ℃).
Safety precautions
High voltage hazard: The output voltage of the high-voltage module of the equipment can reach several thousand volts. It is strictly prohibited to touch the sample fixture and high-voltage cables during testing;
Sample protection: When testing an unknown sample, it is necessary to gradually increase the voltage from a low electric field to avoid direct application of a high field that may cause the sample to break down and burn out;
Grounding requirements: The equipment must be reliably grounded (grounding resistance<4 Ω) to prevent static electricity or leakage from damaging the equipment or endangering personal safety.
Key points for daily maintenance (extending equipment lifespan and ensuring data accuracy)
High voltage module maintenance: Turn off the high voltage after each use to avoid long-term no-load high voltage; Regularly inspect the insulation layer of high-voltage cables (if damaged, replace immediately to prevent the risk of electrical leakage);
Probe and fixture maintenance: Clean the electrode fixture after testing (wipe with a dust-free cloth dipped in anhydrous ethanol) to avoid electrode oxidation; When not in use for a long time, apply a small amount of anti rust oil on the surface of the fixture electrode (for metal fixtures);
Software and Calibration: Conduct a comprehensive calibration every 3-6 months (it is recommended to contact the manufacturer or third-party metrology institution); Avoid frequent reinstallation of testing software to prevent driver loss;
Environmental control: The equipment should be used in a constant temperature and humidity environment (temperature 20-25 ℃, humidity<60%) to avoid dust and corrosive gases (such as laboratory acid mist) affecting high-pressure components.