| Issue |
J. Phys. Colloques
Volume 42, Number C6, Décembre 1981
International Conference on Phonon Physics
|
|
|---|---|---|
| Page(s) | C6-761 - C6-763 | |
| DOI | https://doi.org/10.1051/jphyscol:19816224 | |
International Conference on Phonon Physics
J. Phys. Colloques 42 (1981) C6-761-C6-763
DOI: 10.1051/jphyscol:19816224
1 Physics Division, National Research Council, Ottawa, Canada K1A OR6
2 Physics Department, University of New South Wales, Kensington, Australia
J. Phys. Colloques 42 (1981) C6-761-C6-763
DOI: 10.1051/jphyscol:19816224
A RAMAN STUDY OF THE STRUCTURAL PHASE TRANSITION IN DISORDERED KMn0.85Ni0.15F3
D.J. Lockwood1 et G.J. Coombs21 Physics Division, National Research Council, Ottawa, Canada K1A OR6
2 Physics Department, University of New South Wales, Kensington, Australia
Abstract
KMnl-xNixF3 has been studied to investigate the effect of disorder on the structural phase transition at 186 K in KMnF3. This transition was found at ~ 130 K in KMn0.85Ni0.15F3 but was not observed in other crystals having x > 0.5. Disorder mainly affects Tc and not the phonon behaviour. Present results are consistent with a linear extrapolation of Tc to 0 K at x = 0.5.