Definitions for chalcogenide glass
chalco·genide glass

WiktionaryRate this definition:3.0 / 1 vote

1. chalcogenide glassnoun

   Any of several inorganic polymers of sulphur, selenium and tellurium, that are transparent to infrared radiation and are used in optics.

WikipediaRate this definition:0.0 / 0 votes

1. Chalcogenide glass

   Chalcogenide glass (pronounced hard ch as in chemistry) is a glass containing one or more chalcogens (sulfur, selenium and tellurium, but excluding oxygen). Such glasses are covalently bonded materials and may be classified as covalent network solids. Polonium is also a chalcogen but is not used because of its strong radioactivity. Chalcogenide materials behave rather differently from oxides, in particular their lower band gaps contribute to very dissimilar optical and electrical properties. The classical chalcogenide glasses (mainly sulfur-based ones such as As-S or Ge-S) are strong glass-formers and possess glasses within large concentration regions. Glass-forming abilities decrease with increasing molar weight of constituent elements; i.e., S > Se > Te. Chalcogenide compounds such as AgInSbTe and GeSbTe are used in rewritable optical disks and phase-change memory devices. They are fragile glass-formers: by controlling heating and annealing (cooling), they can be switched between an amorphous (glassy) and a crystalline state, thereby changing their optical and electrical properties and allowing the storage of information.

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1. Chalcogenide glass

   A chalcogenide glass is a glass containing one or more chalcogenide elements. The name chalcogenide originates from the Greek word "chalcos" meaning ore and "gen" meaning formation, thus the term chalcogenide is generally considered to mean ore former. These are three elements in Group 16 in the periodic table: sulfur, selenium and tellurium. Such glasses are covalently bonded materials and may be classified as network solids; in effect, the entire glass matrix acts as an infinitely bonded molecule. Polonium is chemically a chalcogenide as well, it is not used in chalcogenide glasses because of its strong radioactivity and high price.Oxygen is also a group 16 element however it is not considered a chalcogenide. Though oxide materials are the oldest known glass forming systems it has become more traditional to treat them separately from more recently discovered chalcogenide compounds. Scientifically oxide materials behave rather differently from other chalcogenides, in particular their widely different band gaps contribute to very dissimilar optical and electrical properties. Chalcogenides can exist naturally as minerals; two of the most well-known being FeS2 and AuTe2. In fact AuTe2 was the chief reason for the name given to the gold-rush town 'Telluride' in Southwest Colorado.

How to pronounce chalcogenide glass?

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Numerology

1. Chaldean Numerology

   The numerical value of chalcogenide glass in Chaldean Numerology is: 4

2. Pythagorean Numerology

   The numerical value of chalcogenide glass in Pythagorean Numerology is: 9

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Chalcogenide_Glass
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Chalcogenide_Glass
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=chalcogenide glass