C$_{2}$CeNi Structure: A2BC_oC8_38_d_b_a-001
| Prototype | C$_{2}$CeNi |
| AFLOW prototype label | A2BC_oC8_38_d_b_a-001 |
| ICSD | 20397 |
| Pearson symbol | oC8 |
| Space group number | 38 |
| Space group symbol | $Amm2$ |
| AFLOW prototype command |
aflow --proto=A2BC_oC8_38_d_b_a-001
--params=$a, \allowbreak b/a, \allowbreak c/a, \allowbreak z_{1}, \allowbreak z_{2}, \allowbreak y_{3}, \allowbreak z_{3}$ |
Other compounds with this structure
C$_{2}$CoDy, C$_{2}$CoPu, C$_{2}$CoSm, C$_{2}$CoTh, C$_{2}$ErFe, C$_{2}$FeGd, C$_{2}$FeSm, C$_{2}$NiLa, C$_{2}$NiNd, C$_{2}$NiPa, C$_{2}$NiPr, C$_{2}$NiPu, C$_{2}$NiSm, C$_{2}$NiYb, C$_{2}$PrRh
\[ \begin{array}{ccc}
\mathbf{a_{1}}&=&a \,\mathbf{\hat{x}}\\\mathbf{a_{2}}&=&\frac{1}{2}b \,\mathbf{\hat{y}}- \frac{1}{2}c \,\mathbf{\hat{z}}\\\mathbf{a_{3}}&=&\frac{1}{2}b \,\mathbf{\hat{y}}+\frac{1}{2}c \,\mathbf{\hat{z}}
\end{array}\]
Basis vectors
| Lattice coordinates | Cartesian coordinates | Wyckoff position | Atom type | |||
|---|---|---|---|---|---|---|
| $\mathbf{B_{1}}$ | = | $- z_{1} \, \mathbf{a}_{2}+z_{1} \, \mathbf{a}_{3}$ | = | $c z_{1} \,\mathbf{\hat{z}}$ | (2a) | Ni I |
| $\mathbf{B_{2}}$ | = | $\frac{1}{2} \, \mathbf{a}_{1}- z_{2} \, \mathbf{a}_{2}+z_{2} \, \mathbf{a}_{3}$ | = | $\frac{1}{2}a \,\mathbf{\hat{x}}+c z_{2} \,\mathbf{\hat{z}}$ | (2b) | Ce I |
| $\mathbf{B_{3}}$ | = | $\left(y_{3} - z_{3}\right) \, \mathbf{a}_{2}+\left(y_{3} + z_{3}\right) \, \mathbf{a}_{3}$ | = | $b y_{3} \,\mathbf{\hat{y}}+c z_{3} \,\mathbf{\hat{z}}$ | (4d) | C I |
| $\mathbf{B_{4}}$ | = | $- \left(y_{3} + z_{3}\right) \, \mathbf{a}_{2}- \left(y_{3} - z_{3}\right) \, \mathbf{a}_{3}$ | = | $- b y_{3} \,\mathbf{\hat{y}}+c z_{3} \,\mathbf{\hat{z}}$ | (4d) | C I |
References
- O. I. Bodak and E. P. Marusin, The Crystal Structure of RNiC$_2$ Compounds (R=Ce,La,Pr), Dopovidia Akademii Nauk Ukrains'koi RSR, Seriya A: Fiziko_Matematichni Ta Tekhnichni Nauki 41, 1048–1050 (1979).
Found in
- P. Villars and L. Calvert, Pearson's Handbook of Crystallographic Data for Intermetallic Phases (ASM International, Materials Park, OH, 1991), 2nd edn.
Prototype Generator
aflow --proto=A2BC_oC8_38_d_b_a --params=$a,b/a,c/a,z_{1},z_{2},y_{3},z_{3}$