J. Bonnet, M. Boissier, J. Pelous, R. Vacher, Pl. E. Bataillon, Montpellier Cédex, France M. Descamps, J. L. Sauvajol
{"title":"« Glassy » and plastic crystals of cyanoadamantane : a Brillouin scattering investigation","authors":"J. Bonnet, M. Boissier, J. Pelous, R. Vacher, Pl. E. Bataillon, Montpellier Cédex, France M. Descamps, J. L. Sauvajol","doi":"10.1051/JPHYSLET:019850046013061700","DOIUrl":null,"url":null,"abstract":"The elastic constants of cyanoadamantane have been measured in the plastic and «glassy» crystal phases. A special attention has been given to the temperature evolution of C 11 as well as to the damping of the corresponding mode. Comparison with neutron results shows a strong dispersion at room temperature. The temperature dependence of C 11 in the plastic phase has been explained by the setting-up of a local antiferro ordering of molecules Determination des constantes d'elasticite d'apres les mesures de diffusion Brillouin sur monocristal entre 80 et 435 K. Variation thermique de C 11 et attenuation du mode correspondant. Comparaison aux donnees de diffusion de neutrons: existence d'une forte dispersion a temperature ambiante. Explication de la variation thermique de C 11 en phase plastique par apparition d'un ordre moleculaire local de type antiferro","PeriodicalId":14822,"journal":{"name":"Journal De Physique Lettres","volume":"17 1","pages":"617-621"},"PeriodicalIF":0.0000,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal De Physique Lettres","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1051/JPHYSLET:019850046013061700","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
The elastic constants of cyanoadamantane have been measured in the plastic and «glassy» crystal phases. A special attention has been given to the temperature evolution of C 11 as well as to the damping of the corresponding mode. Comparison with neutron results shows a strong dispersion at room temperature. The temperature dependence of C 11 in the plastic phase has been explained by the setting-up of a local antiferro ordering of molecules Determination des constantes d'elasticite d'apres les mesures de diffusion Brillouin sur monocristal entre 80 et 435 K. Variation thermique de C 11 et attenuation du mode correspondant. Comparaison aux donnees de diffusion de neutrons: existence d'une forte dispersion a temperature ambiante. Explication de la variation thermique de C 11 en phase plastique par apparition d'un ordre moleculaire local de type antiferro
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