Dimene - neodymium is a binary inorganic compound, neodymium and copper intermetallic compounds with the formula Cu 2 Nd, crystals.
| DimeNeodymium | |
|---|---|
| Are common | |
| Systematic name | DimeNeodymium |
| Traditional names | Neodymide |
| Chem. formula | Cu 2 Nd |
| Rac formula | NdCu 2 |
| Physical properties | |
| condition | crystals |
| Molar mass | 271.33 g / mol |
| Density | 7.9 g / cm³ |
| Thermal properties | |
| T. melt. | 840 [1] ° C |
| Education enthalpy | -17 [2] kJ / mol |
| Classification | |
| Reg. CAS number | 54723-84-1 |
Getting
- Fusion of stoichiometric amounts of pure substances:
Physical Properties
Dimene-neodymium forms crystals of the rhombic syngony , space group I mma , cell parameters a = 0.4387 nm, b = 0.7001 nm, c = 0.7418 nm, Z = 4, structure of the dimetserium type CeCu 2 [1] [2] .
The compound melts congruently at a temperature of 840 ° С [1] .
At a temperature of 6.5 K, magnetic ordering occurs (a transition to the antiferromagnetic state) and at a temperature of 4.1 K, spin reorientation occurs [3] .
Notes
- ↑ 1 2 3 Diagrams of state of binary metallic systems / Ed. N. P. Lyakishev. - M .: Metallurgy, 1997. - T. 2. - 1024 p. - ISBN 5-217-01569-1 .
- ↑ 1 2 B. Predel. Cu-Nd (Copper-Neodymium) // Landolt-Börnstein - Group IV Physical Chemistry. - 1994. - V. 5d . - p . 1-3 . - DOI : 10.1007 / 10086090_1094 .
- ↑ E. Gratz, M. Loewenhaupt, M. Divis, W. Steiner, E. Bauer, N. Pillmayr, H. Muller, H. Nowotny, B. Frick. Structural, magnetic, electronic and transport properties of NdCu 2 // J. Phys .: Condens. Matter. - 1991. - Vol. 3 , No. 47 . - p . 9297-9319 . - DOI : 10.1088 / 0953-8984 / 3/47/004 .