Packungsdichte und Wertigkeit von Lithium und Natrium unter Druck

Packing density and valence of lithium and sodium under pressure

  • The volume changes of lithium and sodium under pressure are discussed with respect to the packing density of the atoms and their valence. In densely packed Li I (bcc), Li II (fcc), and Li III (alpha-Hg ype), valence increases from 1 at ~ 5 GPa to ~ 2.5 at 40 GPa. The maximum valence 3 is attained in Li IV (body-centered cubic, 16 atoms per cell, packing density q = 0.965) at 47 GPa. In densely packed Na I (bcc) a linear increase of valence from 1 at ~ 10 GPa to 2.9 at 65 GPa is found which continues in Na II (fcc) up to 4.1 at 103 GPa.

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Author:Martin Trömel, Karlheinz Taxer
Parent Title (German):Zeitschrift für Naturforschung. B, Chemical sciences
Publisher:Verl. d. Zeitschr. für Naturforschung
Place of publication:Tübingen
Document Type:Article
Date of Publication (online):2006/03/24
Year of first Publication:2004
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2006/03/24
Tag:High pressure; Lithium; Packing density; Sodium; Valence
Page Number:4
First Page:139
Last Page:142
Source:Zeitschrift für Naturforschung 60b, 139-142 (2005)
Institutes:Biochemie, Chemie und Pharmazie / Biochemie und Chemie
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften
Licence (German):License LogoDeutsches Urheberrecht