High Performance Pyroelectric Materials.

Abstract

Single crystals of triglycine sulfate (TGS), triglycine fluoberyllate (TGFB), deuterated triglycine fluoberyllate (D-TGFB), triglycine selenate (TGSe), mixed crystals of TGS and TGSe and 1-alanine doped TGS and TGFB were grown and characterized. Optimum crystal growth conditions were established. In particular, for D-TGFB which has the highest figure of merit, best crystal growth was obtained at a starting saturation temperature of 45 degrees, a seed rotation rate of 15 rpm, a pH of 3.6, a growth rate of 0.1 degrees per day for a volume of 10 liters, and a seed orientation in which the cleavage plane was parallel to the horizontal plane. Careful measurements were made of the pyroelectric coefficient and dielectric constant of a large number of samples of these homologs of TGS and consistent values were obtained. The superior figure of merit of D-TGFB was confirmed. The production of thin pyroelectric crystal targets by optical polishing and cup-etching was investigated. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1977
Accession Number
ADA049204

Entities

People

  • Warren Ruderman

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Alanine
  • Attrition
  • Coefficients
  • Crystal Growth
  • Crystal Lattices
  • Crystal Structure
  • Crystals
  • Curie Temperature
  • Dielectric Permittivity
  • Ethylene Glycol
  • Figure Of Merit
  • Glycols
  • Materials
  • Measurement
  • Polymethyl Methacrylate
  • Saturation
  • Targets

Readers

  • Materials Science and Engineering.
  • Mathematics or Statistics