Cu2Te (Ch) Structure: A2B_hP6_191_h_e
| Prototype | : | Cu2Te |
| AFLOW prototype label | : | A2B_hP6_191_h_e |
| Strukturbericht designation | : | $C_{h}$ |
| Pearson symbol | : | hP6 |
| Space group number | : | 191 |
| Space group symbol | : | $\mbox{P6/mmm}$ |
| AFLOW prototype command | : | aflow --proto=A2B_hP6_191_h_e --params=$a,c/a,z_{1},z_{2}$ |
Hexagonal primitive vectors:
\[
\begin{array}{ccc}
\mathbf{a}_1 & = & \frac12 \, a \, \mathbf{\hat{x}} - \frac{\sqrt3}2 \, a \, \mathbf{\hat{y}} \\
\mathbf{a}_2 & = & \frac12 \, a \, \mathbf{\hat{x}} + \frac{\sqrt3}2 \, a \, \mathbf{\hat{y}} \\
\mathbf{a}_3 & = & c \, \mathbf{\hat{z}}\\
\end{array}
\]
Basis vectors:
\[ \begin{array}{ccccccc} & & \mbox{Lattice Coordinates} & & \mbox{Cartesian Coordinates} &\mbox{Wyckoff Position} & \mbox{Atom Type} \\ \mathbf{B}_{1} & =&z_{1} \, \mathbf{a}_{3}& = &z_{1} \, c \, \mathbf{\hat{z}}& \left(2e\right) & \mbox{Te} \\ \mathbf{B}_{2} & =&- z_{1} \, \mathbf{a}_{3}& = &- z_{1} \, c \, \mathbf{\hat{z}}& \left(2e\right) & \mbox{Te} \\ \mathbf{B}_{3} & =&\frac13 \mathbf{a}_{1}+ \frac23 \mathbf{a}_{2}+ z_{2} \, \mathbf{a}_{3}& = &\frac12 \, a \, \mathbf{\hat{x}}+ \frac1{2\sqrt{3}} \, a \, \mathbf{\hat{y}}+ z_{2} \, c \, \mathbf{\hat{z}}& \left(4h\right) & \mbox{Cu} \\ \mathbf{B}_{4} & =&\frac23 \mathbf{a}_{1}+ \frac13 \mathbf{a}_{2}+ z_{2} \, \mathbf{a}_{3}& = &\frac12 \, a \, \mathbf{\hat{x}}- \frac1{2\sqrt{3}} \, a \, \mathbf{\hat{y}}+ z_{2} \, c \, \mathbf{\hat{z}}& \left(4h\right) & \mbox{Cu} \\ \mathbf{B}_{5} & =&\frac23 \mathbf{a}_{1}+ \frac13 \mathbf{a}_{2}- z_{2} \, \mathbf{a}_{3}& = &\frac12 \, a \, \mathbf{\hat{x}}- \frac1{2\sqrt{3}} \, a \, \mathbf{\hat{y}}- z_{2} \, c \, \mathbf{\hat{z}}& \left(4h\right) & \mbox{Cu} \\ \mathbf{B}_{6} & =&\frac13 \mathbf{a}_{1}+ \frac23 \mathbf{a}_{2}- z_{2} \, \mathbf{a}_{3}& = &\frac12 \, a \, \mathbf{\hat{x}}+ \frac1{2\sqrt{3}} \, a \, \mathbf{\hat{y}}- z_{2} \, c \, \mathbf{\hat{z}}& \left(4h\right) & \mbox{Cu} \\ \end{array} \]References
- H. Nowotny, Die Kristallstruktur von Cu2Te, Z. Metallkd. 37, 40–42 (1946).
Found in
- P. Villars and L. Calvert, Pearson's Handbook of Crystallographic Data for Intermetallic Phases (ASM International, Materials Park, OH, 1991), 2nd edn., pp. 3014.