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Extended de Launay model for the lattice dynamics ofh.c.p. metals

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Il Nuovo Cimento B (1971-1996)

Summary

By immersing the point-ion h.c.p. lattice into a free-electron gas and calculating the electron-ion interaction in the extended de Launay model, the lattice dynamics of five metals, namely that of scandium, terbium, holmium, thallium and zirconium, is studied. The calculated phonon dispersion curves along the principal symmetry directions as well as the lattice heat capacities of these metals are found to be in good agreement with the experimental results.

Riassunto

Immergendo il reticolo esagonale a struttura stretta di ioni puntiformi in un gas di elettroni liberi e calcolando l’interazione elettrone-ione col modello di de Launay ampliato, si studia la dinamica reticolare di cinque metalli, cioè quella dello scandio, del terbio, dell’olmio, del tallio e dello zirconio. Si trova che le curve di dispersione fononica calcolate lungo gli assi di simmetria principali e le capacità termiche reticolari di questi metalli sono in buon accordo con i risultati sperimentali.

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Authors and Affiliations

  1. Instituto de Física «Gleb Wataghin», Universidade Estadual de Campinas, Campinas, S.P.

    R. Cavalheiro & M. M. Shukla

Authors
  1. R. Cavalheiro
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  2. M. M. Shukla
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To speed up publication, the authors of this paper have agreed to not receive the proofs for correction.

This work forms a part of the thesis submitted byR. Cavalheiro for the Ph. D. degree at the University of Campinas, in October 1974.

Traduzione a cura della Redazione.

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Cavalheiro, R., Shukla, M.M. Extended de Launay model for the lattice dynamics ofh.c.p. metals. Nuov Cim B 30, 163–181 (1975). https://doi.org/10.1007/BF02721501

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  • DOI: https://doi.org/10.1007/BF02721501

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