QUANTUM-FERROELECTRIC PRESSURE SENSOR FOR USE AT LOW TEMPERATURES.

Author(s) : LAWLESS W. N., CLARK C. F., SAMARA G. A.

Type of article: Article

Summary

A SMALL, MULTILAYER CAPACITANCE SENSOR FOR MEASURING PRESSURE OVER A BROAD RANGE AT LOW TEMPERATURES IS DESCRIBED. THE DIELECTRIC MATERIAL IS A QUANTUM FERROELECTRIC IN THE CERAMIC SYSTEM, AND THE RECIPROCAL CAPACITANCE VARIES LINEARLY WITH PRESSURE INTO THE KILOBAR REGION. THE AVERAGE SENSITIVITY IS 151 PICOFARADS/KBAR, AND THE SENSOR IS ESSENTIALLY INDEPENDENT OF BOTH INTENSE MAGNETIC FIELDS AND TEMPERATURE BELOW 10 K. A CALIBRATION FOR THE SLIGHT MAGNETIC FIELD EFFECT IS GIVEN, AND THE SENSOR IS DIELECTRICALLY STABLE AT HELIUM TEMPERATURES.

Details

  • Original title: QUANTUM-FERROELECTRIC PRESSURE SENSOR FOR USE AT LOW TEMPERATURES.
  • Record ID : 1986-0488
  • Languages: English
  • Source: Rev. sci. Instrum. - vol. 56 - n. 10
  • Publication date: 1985
  • Document available for consultation in the library of the IIR headquarters only.

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