Accession Number : ADD014154

Title :   Metal Tetraiodomercurates as Infrared Detectors.

Descriptive Note : Patent, Filed 26 Feb 88, patented 23 May 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Novinson, Thomas

Report Date : 23 May 1989

Pagination or Media Count : 5

Abstract : A series of chemically synthesized compounds known as metal mercury iodides or metal tetraiodomercurates having use as infrared detectors are made by reacting potassium tetraiodomercurate(II) with monovalent metal nitrates or iodides, such as thallium(I), indium(I) or copper(I) nitrates. In the case of gold, the gold(I) iodide is used because the nitrate is not known. The precipitated metal (thallium, indium, copper, gold, etc.) tetraiodomercurate is then filtered, dried, and purified (recrystallized) and pressed into a disk under high pressure. Alternatively, the material can be grown as a large crystal by zone melt fusion methods. Patents. (aw)

Descriptors :   *INFRARED DETECTORS, *IODIDES, *MERCURY COMPOUNDS, *METAL COMPOUNDS, *PATENTS, COPPER, CRYSTALS, GOLD, HIGH PRESSURE, INDIUM, NITRATES, THALLIUM, VALENCE, POTASSIUM COMPOUNDS

Subject Categories : Solid State Physics
      Industrial Chemistry and Chemical Processing
      Infrared Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE