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Silver telluride
Silver telluride
General
Other names	Hessite
Molecular formula	Ag2Te
Molar mass	341.3364 g/mol
Appearance	black crystals
Crystal Structure	orthorhombic
CAS number	[12002-99-2]
Properties
Density and phase	8.4 g/cm³, solid
Melting point	955 °C
Boiling point
Mohs hardness	2.5
a Lattice constant	5.29Å
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

'Silver telluride' (Ag₂Te) is a chemical compound, a telluride of silver, also known as disilver telluride or silver(I) telluride. It forms a monoclinic crystal. In a wider sense, ''silver telluride'' can be used to denote AgTe (silver(II) telluride, a metastable compound) or Ag₅Te₃.
Silver(I) telluride occurs naturally as the mineral hessite, whereas silver(II) telluride is known as empressite.
Silver telluride is a semiconductor which can be doped both n-type and p-type. Stochoimetric Ag₂Te has n-type conductivity. On heating silver is lost from the material.
Non-stoichiometric silver telluride has shown extraordinary magnetoresistance.

Contents

References

See also

Related materials

External links

References

★ Phase Transition of Ag-Enriched Ag₂Te, F. F. Aliev, Inorganic Materials, Vol. 38, (10), pp. 995-997 (2002)

★ Large positive magnetoresistance in thin films of silver telluride, I. S. Chuprakov and K. H. Dahmen, Applied Physics Letters Vol. 72, (17), pp. 2165-2167 (1998)

★ Fundamental Optical Absorption in β-Silver Telluride, Richard Dalven, Phys. Rev. Lett. 16, 311–312 (1966)

See also

★ Hessite

★ Empressite

★ Sylvanite

Related materials

★ Silver selenide

★ Silver sulfide

External links