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- W2029106319 abstract "The absolute values of the Brillouin components were measured at room temperature in NaNO2 for several orientations. The experimental results can be explained if the two following properties are considered: 1. At room temperature, NaNO2 is piezoelectric. Effective elasto-optic constants, which possibly take into account the electro-optic effects must be used. 2. NaNO2 is strongly birefringent. The active phonons, in the case of transverse phonons, lead to a rotation term whose contribution is of the same order of magnitude than that of the elasto-optic constants. All experimental results are consistent with p = −0.050 ± 0.01, p55 = −0.30 ± 0.02, p = −0.10 ± 0.01. Nous avons mesuré les valeurs absolues des intensités des composantes Brillouin fournies par NaNO2 pour diverses orientations. Il est nécessaire, afin d'interpréter les résultats expérimentaux, de tenir compte des deux propriétés suivantes: 1. A température ordinaire, NaNO2 est piézoélectrique. Il est nécessaire d'utiliser des constantes elastooptiques effectives, qui tiennent éventuellement compte du rôle joué par les constantes électrooptiques. 2. NaNO2 est fortement biréfringent. Les phonons actifs introduisent un terme de rotation dont la contribution, dans le cas des phonons transversaux, est du měme ordre de grandeur que celles des constantes élastooptiques. Les résultats expérimentaux sont alors cohérents, et l'on constate que p = −0,050 ± 0,01, p55 = −0,30 ± 0,02, p = −0,10 ± ± 0,01." @default.
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- W2029106319 date "1972-05-16" @default.
- W2029106319 modified "2023-10-05" @default.
- W2029106319 title "Brillouin scattering in sodium nitrite at room temperature" @default.
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- W2029106319 cites W2050410748 @default.
- W2029106319 doi "https://doi.org/10.1002/pssa.2210110127" @default.
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