| |
Identifiers | |
---|---|
3D model (
JSmol)
|
|
| |
| |
Properties | |
TaAs | |
Molar mass | 255.869 g/mol |
Density | 12.25 g/cm3 [1] |
Melting point | Decomposes at 1400°C [2] |
Structure | |
Body-centered tetragonal | |
I41md, No. 109 | |
4mm | |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Tantalum arsenide is a compound of tantalum and arsenic with the formula TaAs. It is notable as being the first topological Weyl semimetal that was identified and characterized by ARPES. [3]
Tantalum arsenide crystallizes in a body-centered tetragonal unit cell with lattice parameters a = 3.44 Å and c = 11.65 Å. It belongs to the space group I41md.
TaAs has been prepared by decomposing TaAs2 at 900 °C. [1] A more recent preparation yielded large, single crystals of TaAs by chemical vapor transport with elemental precursors and iodine as the transport agent: [2]
| |
Identifiers | |
---|---|
3D model (
JSmol)
|
|
| |
| |
Properties | |
TaAs | |
Molar mass | 255.869 g/mol |
Density | 12.25 g/cm3 [1] |
Melting point | Decomposes at 1400°C [2] |
Structure | |
Body-centered tetragonal | |
I41md, No. 109 | |
4mm | |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Tantalum arsenide is a compound of tantalum and arsenic with the formula TaAs. It is notable as being the first topological Weyl semimetal that was identified and characterized by ARPES. [3]
Tantalum arsenide crystallizes in a body-centered tetragonal unit cell with lattice parameters a = 3.44 Å and c = 11.65 Å. It belongs to the space group I41md.
TaAs has been prepared by decomposing TaAs2 at 900 °C. [1] A more recent preparation yielded large, single crystals of TaAs by chemical vapor transport with elemental precursors and iodine as the transport agent: [2]