| Autor: |
M. J. Tello, F. J. Zúñiga, J. M. Perez-Mato, J L Manes, G Chapuis |
| Rok vydání: |
1982 |
| Předmět: |
|
| Zdroj: |
Journal of Physics C: Solid State Physics. 15:5195-5201 |
| ISSN: |
0022-3719 |
| DOI: |
10.1088/0022-3719/15/25/011 |
| Popis: |
The two recently reported structural phase transitions in (CH3)3NHCdCl3 are investigated from a group theoretical point of view and the symmetries of their corresponding order parameters have been determined. The authors also present the faint variables and modes for every phase and their faintness indices. From a study of the distortion which relates the prototype phase with the room temperature structure, they show how the orthorhombic distortion can be understood as mainly the result of two normal modes, one corresponding to antiphase rotations of successive octahedra columns, and the other related to y displacements with Eg symmetry of the nitrogen atoms. The two motions are clearly correlated. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
