While CW interacts with aromatic amines such as dimethylaniline in the ground state, C,,, does not. Fluorescence spectroscopic studies, including lifetime measurements, show the formation of exciplexes of both Ca and Cm with arpmatic amines in nonaromatic solvents such as methylcyclohexane. Exciplex
Ground state of f.c.c. alloys with multiatom interactions
β Scribed by John W. Cahn; Ryoichi Kikuchi
- Publisher
- Elsevier Science
- Year
- 1979
- Weight
- 766 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0001-6160
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β¦ Synopsis
Abmract-The ground state of a binary f.c.c. alloy with nearest neighbor interactions and tetrahedral multiatom interactions (characterized by two parameters a and j) is denved and presented in a chart which shows classification of phases in the space of u and /?. Where non-stoichiometric phases can occur, the phase boundaries at T== 0 are computed using the tetrghedron approximation of the cluster variation method. Duality of the composition and the chemical potential is emphasized and results are presented and/or interpreted in the dual approaches. RCalnCOn d&rive Mat fondamental d'une alliage binaire C.F.C. avec les interactions des premiers voisins et les interactions t&a&es et multiatomiques (caractCri&s par deux paramkres a et j?). L&at fondamental est presenti dans un diagramme montrant le classement des phases dans l&pace de a et 8. Ot les phases non-StoechiomCtriques peuvent avolr place, les limites de phase g T = 0 sent c&u&es par l'approximation t&a&ire de la mtthode de la 'cluster variation'. La dualit de la composition et ie potentiel chimique est souli&e. et les risultats sont present& et/au expliques dam Ies doubles approches. ~smsn~-Der Grundzustand einer bitt&en kfz. Legierung mit Wechselwirkung tichster Nachbarn und tetraedrischer Multiatomwechselwirkung (charakterisiert durch zwei Parameter K und fl) wird abgeleitet und in eine Darstellung, die die Phaseneinteilung im a-/I-Raum zeigt, eingetragen. Wo nichtatiichiometrische Phasen auftreten kiinnen, werden die Phasengrenzen bei T = 0 mit einer Tetraederniiherung der Cluster-Variationsmethode berechnet. Dualitit der Zusammensetzung und des chemischen Potentials wird betont und Ergebnisse werden vorgelegt und/oder in den dualen Niiherungen gedeutet.
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