Silver telluride
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| Silver telluride | ||
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| Other names | ||
| Identifiers | ||
| CAS number | 12002-99-2  | |
| PubChem | 6914515 | |
| Properties | ||
| Molecular formula | Ag2Te | |
| Molar mass | 341.3364 g/mol | |
| Appearance | grey-black crystals | |
| Density | 8.318 g/cm³ | |
| Melting point | 955 °C; 1,751 °F; 1,228 K | |
| Refractive index (nD) | 3.4 | |
| Structure | ||
| Crystal structure | Monoclinic, mP12 | |
| Space group | P21/c, No. 14 | |
(verify) (what is: / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | ||
| Infobox references | ||
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.
References
- Aliev, F. F. (2002). Inorganic Materials 38 (10): 995. doi:10.1023/A:1020512918319.
- Chuprakov, I. S.; Dahmen, K. H. (1998). "Large positive magnetoresistance in thin films of silver telluride". Applied Physics Letters 72 (17): 2165. Bibcode:1998ApPhL..72.2165C. doi:10.1063/1.121309.
- Dalven, Richard (1966). "Fundamental Optical Absorption in β-Silver Telluride". Physical Review Letters 16 (8): 311. Bibcode:1966PhRvL..16..311D. doi:10.1103/PhysRevLett.16.311.
See also
Related materials
- Silver selenide
- Silver sulfide
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