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On the structure of heavy metals; Sur la structure des metaux lourds

Abstract

The properties of the last series of Mendeleef's table are compared with those of the elements of the preceding series. This comparison suggests an electronic structure of the 'transition metal' type, with narrow bands, at the beginning of this series (up to certain phases at least of plutonium); then of the rare earth metal type, with independent non-saturated internal layers, further on in the series. The 5 f orbits seem to play an important part in these two types of structure, from uranium on. A more detailed study of the very heavy elements (americium and beyond) and alloys would allow these conclusions to be confirmed. Certain general points, concerning the nature of homopolar connections and paramagnetism in the transition metals, are developed in an additional section. (author) [French] Les proprietes des elements de la derniere serie du tableau de Mendeleef sont comparees a celles des elements des series precedentes. Cette comparaison suggere une structure electronique du type 'metal de transition', a bandes etroites, au debut de cette serie (jusqu'a certaines phases au moins du plutonium); puis du type d'un metal des terres rares, a couches internes non saturees independantes, au-dela dans la serie. Les orbitales 5 f semblent jouer un  More>>
Authors:
Friedel, J; [1]  Faculte des Sciences de l'Universite de Paris, 75 (France)]
  1. Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
Publication Date:
Jul 01, 1958
Product Type:
Technical Report
Report Number:
CEA-R-766
Resource Relation:
Other Information: 18 refs
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ATOMIC RADII; BAND THEORY; BRILLOUIN ZONES; CRYSTAL LATTICES; ELECTRON CORRELATION; ELECTRONIC STRUCTURE; ENERGY-LEVEL TRANSITIONS; FERMI LEVEL; HEAVY METALS; INTERATOMIC DISTANCES; KINETIC ENERGY; MELTING POINTS; PARAMAGNETISM; PHASE DIAGRAMS; RARE EARTHS; SYMMETRY; TRANSITION ELEMENTS; URANIUM-ALPHA
OSTI ID:
20877833
Research Organizations:
CEA Saclay, 91 - Gif-sur-Yvette (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR07R0766045546
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
16 pages
Announcement Date:
Jun 15, 2007

Citation Formats

Friedel, J, and Faculte des Sciences de l'Universite de Paris, 75 (France)]. On the structure of heavy metals; Sur la structure des metaux lourds. France: N. p., 1958. Web.
Friedel, J, & Faculte des Sciences de l'Universite de Paris, 75 (France)]. On the structure of heavy metals; Sur la structure des metaux lourds. France.
Friedel, J, and Faculte des Sciences de l'Universite de Paris, 75 (France)]. 1958. "On the structure of heavy metals; Sur la structure des metaux lourds." France.
@misc{etde_20877833,
title = {On the structure of heavy metals; Sur la structure des metaux lourds}
author = {Friedel, J, and Faculte des Sciences de l'Universite de Paris, 75 (France)]}
abstractNote = {The properties of the last series of Mendeleef's table are compared with those of the elements of the preceding series. This comparison suggests an electronic structure of the 'transition metal' type, with narrow bands, at the beginning of this series (up to certain phases at least of plutonium); then of the rare earth metal type, with independent non-saturated internal layers, further on in the series. The 5 f orbits seem to play an important part in these two types of structure, from uranium on. A more detailed study of the very heavy elements (americium and beyond) and alloys would allow these conclusions to be confirmed. Certain general points, concerning the nature of homopolar connections and paramagnetism in the transition metals, are developed in an additional section. (author) [French] Les proprietes des elements de la derniere serie du tableau de Mendeleef sont comparees a celles des elements des series precedentes. Cette comparaison suggere une structure electronique du type 'metal de transition', a bandes etroites, au debut de cette serie (jusqu'a certaines phases au moins du plutonium); puis du type d'un metal des terres rares, a couches internes non saturees independantes, au-dela dans la serie. Les orbitales 5 f semblent jouer un r e important, dans ces deux types de structures, a partir de l'uranium. Une etude plus poussee des elements tres lourds (americium et au-dela) et des alliages permettrait de confirmer ces conclusions. Certains points generaux, concernant la nature des liaisons homopolaires et le paramagnetisme dans les metaux de transition, sont developpes en annexe. (auteur)}
place = {France}
year = {1958}
month = {Jul}
}