| Autor: |
B Arnscheidt, K.-H. Höck, Josef Pelzl, S. Müller |
| Rok vydání: |
1992 |
| Předmět: |
|
| Zdroj: |
Solid State Communications. 82:845-849 |
| ISSN: |
0038-1098 |
| Popis: |
On deuteration (NH 4 ) 2 TeCl 6 undergoes two additional structural phase transformations at T c 2 ( x ) and T c 3 ( x ) which are investigated as a function of the deuteron concentration x by Raman scattering. T c 2 decreases monotonously from 48 K at x = 1 to 13 K at x c 2 = 0.15 and T c 3 is reduced from 28 K at x = 1 to 20 K at x c 3 = 0.85. For deuterium contents smaller than the critical concentrations x c 3 and x c 2 the third and second transition are suppressed. Two low energy soft modes are observed below T c 2 ( x ) in the partially deuterated crystals. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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