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QUASI-CRYSTAL [1 record]
Record 1 - internal organization data 2000-09-11
Record 1, English
Record 1, Subject field(s)
- Physics of Solids
Record 1, Main entry term, English
- quasi-crystal
1, record 1, English, quasi%2Dcrystal
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A phase of solid matter that, like a crystal, exhibits long-range orientational order and translational order but whose atoms and clusters repeat in a sequence defined by a sum of periodic functions whose periods are in an irrational ratio. 2, record 1, English, - quasi%2Dcrystal
Record 1, French
Record 1, Domaine(s)
- Physique des solides
Record 1, Main entry term, French
- quasicristal
1, record 1, French, quasicristal
masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- quasi-cristal 2, record 1, French, quasi%2Dcristal
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Construction cristalline à mailles pentagonales. 3, record 1, French, - quasicristal
Record number: 1, Textual support number: 1 CONT
Mais depuis 1984 on sait qu'il existe des cristaux dont les mailles sont pentagonales. Ils ont été baptisés quasi-cristaux. 4, record 1, French, - quasicristal
Record number: 1, Textual support number: 1 OBS
Les quasi-cristaux ont été découverts en 1984, dans certains alliages métalliques (aluminium/manganèse, lithium/aluminium) qui présentent, à la diffraction, la symétrie pentagonale des pavages de Penrose - symétrie normalement interdite par les lois de la cristallographie. Or cet agencement semble leur conférer des propriétés supérieures en termes de résistivité, de dureté et d'élasticité. 5, record 1, French, - quasicristal
Record number: 1, Textual support number: 1 PHR
Le quasi-cristal conduit l'électricité, présente des symétries. 5, record 1, French, - quasicristal
Record number: 1, Textual support number: 2 PHR
Composer, construire, faire croître un quasi-cristal avec des algorithmes. 5, record 1, French, - quasicristal
Record number: 1, Textual support number: 3 PHR
Désordre de phase faible adhérence, mécanique de la rupture, modèle de pavage aléatoire, modèle de Penrose, modèle vitreux, propriété d'adhérence, stabilité, structure (de, des) quasi-cristaux. 5, record 1, French, - quasicristal
Record number: 1, Textual support number: 4 PHR
Quasi-cristal résistant à la corrosion, à l'oxydation. 5, record 1, French, - quasicristal
Record 1, Spanish
Record 1, Textual support, Spanish
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