| DOI | Trouver le DOI : https://doi.org/10.1139/p04-073 |
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| Auteur | Rechercher : Steinitz, Michael O.; Rechercher : Pink, David A.; Rechercher : Clancy, J. Patrick; Rechercher : MacDonald, A. Nicole; Rechercher : Swainson, Ian1 |
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| Affiliation | - Conseil national de recherches du Canada. Centre canadien de faisceaux de neutrons du CNRC
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| Format | Texte, Article |
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| Résumé | Capacitance dilatometry was used to measure the relative thermal expansivity, ΔL/L₀, of single crystals of sodium nitrate (NaNO₃) as a function of temperature. From these measurements, the phase transition at Tf = 550 K shows characteristics of a discontinuous transition. A theory based on the competition between long-range interactions and the entropy gained by rotating NO3⁻₃ groups at high temperatures predicts a discontinuous transition at T = Tf with ΔL/L₀ sim (Tf – T)ζ with ζ = 1. Our measurements yield ζ ≈ 1. |
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| Date de publication | 2004-11-30 |
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| Maison d’édition | National Research Council of Canada. NRC Research Press |
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| Dans | |
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| Numéro NPARC | 12328115 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | ca832c56-5b69-462d-8cfd-0a2ffffb8d60 |
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| Enregistrement créé | 2009-09-10 |
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| Enregistrement modifié | 2022-10-13 |
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