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1. Polarization vs. Electric Fieldphoto-Polarization vs. Electric Field

 

Automated Polarization Measurement System

 

The automated polarization measurement system is intended primarily for measuring the polarization of materials induced by an electric field. The polarization measurements are very important for characterizing the piezoelectric materials, such as lead zirconate titanate (PZT), which are widely used for applications such as piezoelectric sonars and ultrasonic transducers, medical diagnostic transducers, buzzers, gas ignitors, etc.

 

The polarization measurement system can be configured to measure the charge, or to a limited degree, the current. It can measure an external input from, for example, a strain gauge amplifier, and can compensate for the linear impedance in the sample. The typical ranges for polarization measurements are as follows:

 

  1. Frequency range: 1mHz to 1kHz
  2. Charge range: 10pC to 100x
  3. Current range: 1nA to 10mA

 

The hardware and instrumentation required for carrying out the polarization and strain related measurements are as follows:

 

  1. Stanford Research Systems Model SR 830 DSP Lock-in Amplifier
  2. KEPCO Bipolar Operational Power Supply / Amplifier Model BOP 1000 M (1000 Volts)
  3. Trek Model 609C-6 High Voltage D.C. Amplifier (4 kV)
  4. Trek Model 610A COR-A-TROL H.V. Supply Amplifier / Controller (10 kV)
  5. Indigenously Designed and Fabricated Charge Integrator (Blue Box)
  6. Stanford Research Systems Model SR 715 LCR Meter
  7. Delta Design Model 2300 Temperature Bath (Liquid N2 Temp., 77K to 523K)
  8. Sample Holders with LVDT Attachment for Strain Measurements
  9. Super VGA Magnavox, MASTER Personal Computer Attached to Hewlett Packard Deskjet 520 Printer
  10. High Dielectric Strength Insulating Liquid, Galden HT-200 (Temp. range: -85˚C to +180˚C)
  11. GoldStar DM-311 Digital Multimeter

 

Contact: Jeff Long, Validate to view contact info , (814) 863-8190