V. La-figure, 10. représente le calcul de la densité d'états à un phonon dans le cas de KT pur

L. Densité-nest-modifiée and . Qu, aux basses frequances par I'introduction du Li. n faut noter d'autre part que cette densité s'annule entre 600 et 800cm-l quelle que soit la concentration considérée, REFERENCES BIBLIOGRAPHIQUES

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