DEVELOPMENT OF TECHNIQUES FOR PREPARING HOMOGENEOUS SINGLE CRYSTALS OF LEAD TELLURIDE, LEAD SELENIDE, AND LEAD SULFIDE

Abstract

Experimental work was concerned primarily with investigation of the effects of mercury doping on the electrical properties of PbTe. Investigation of the distribution of platinum and mercury in PbTe crystals by emission spectrographic analysis indicates that platinum is rejected from the freezing solid and tends to be concentrated in the last-to-freeze portions of the crystal. Mercury concentrations are found to be higher in the first-to-freeze portions of the crystals, but mean concentrations are low, indicating that mercury is evolved into the vapor phase of the system. The measured electrical properties of the mercury-doped PbTe crystals were not significantly different from those of undoped PbTe prepared and treated under similar conditions; thus, the role of mercury as a dopant in PbTe was not made apparent.

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Document Details

Document Type
Technical Report
Publication Date
Jan 15, 1966
Accession Number
AD0647294

Entities

People

  • J. F. Miller
  • J. W. Moody
  • R. C. Himes

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Chemical Engineering
  • Chemistry
  • Coefficients
  • Commerce
  • Corporations
  • Crystals
  • Department Of Defense
  • Electrical Properties
  • Heat Energy
  • Heat Treatment
  • Lead Tellurides
  • Melting Point
  • Phase
  • Single Crystals
  • Tellurides
  • Vapor Phases

Readers

  • Materials Science and Engineering.