Community Research and Development Information Service - CORDIS

Abstract

The principal aim of this article will be to examine in detail how the actinide metals fit into the periodic table. In this introduction, with some short background remarks concerning the bulk properties, we hope to make it clear that the actinides are neither a d transition series nor a series like the lanthanides. We shall find that they constitute a new type of series. The electronic structure of the early part of the series finds a close conceptual parallel in a d transition series and the later part of the series is more like the lanthanides. The region of transition between the two parts of the series is of special interest and importance. Among the bulk properties of the elements there are three which are of particular importance; (a) the equilibrium volume, (b) the cohesive energy, and (c) the compressibility, or its inverse, the bulk modulus. The equilibrium volume has been of special historical interest since it is directly connected to the mass density. We will also discuss the room temperature entropy of the actinides and relate its behaviour to the room temperature entropy of the other transition metal series. Finally, we discuss the ground state magnetism of the actinides in the context of our understanding of ground state magnetism across the periodic table.

Additional information

Authors: BROOKS M S S JRC KARLSRUHE ESTAB. (GERMANY) JOHANSSON B INSTITUTE OF PHYSICS, UNIVERSITY OF ARHUS (DENMARK) SKRIVER H L RISOE NATIONAL LABORATORY, ROSKILDE (DENMARK) , JRC KARLSRUHE ESTAB. (GERMANY);INSTITUTE OF PHYSICS, UNIVERSITY OF ARHUS (DENMARK);RISOE NATIONAL LABORATORY, ROSKILDE (DENMARK)
Bibliographic Reference: HANDBOOK ON THE PHYSICS AND CHEMISTRY OF ACTINIDES, PUBLISHED BY ELSEVIER SCIENCE PUBLISHERS B.V., AMSTERDAM (THE NETHERLANDS) 1984, PP. 153-269
Follow us on: RSS Facebook Twitter YouTube Managed by the EU Publications Office Top