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Title: Relativistic effects on the thermal expansion of the actinide elements

Abstract

The room-temperature linear thermal-expansion coefficient is calculated for the light actinides thorium, protactinium, uranium, neptunium, and plutonium for the fcc crystal structure. The relativistic spin-orbit interaction is included in these calculations. We show that the spin-orbit splitting of the 5{ital f} band gives rise to a considerable increase of the thermal expansion and to a large extent explains the observed anomalously large thermal expansion for the neptunium and plutonium metals.

Authors:
; ; ;  [1]
  1. (Condensed Matter Theory Group, Physics Department, University of Uppsala, Box 530, S-75121 Uppsala (Sweden))
Publication Date:
OSTI Identifier:
6389196
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review, B: Condensed Matter; (USA); Journal Volume: 42:7
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; NEPTUNIUM; THERMAL EXPANSION; PLUTONIUM; PROTACTINIUM; THORIUM; URANIUM; ACTINIDES; FCC LATTICES; L-S COUPLING; MEDIUM TEMPERATURE; COUPLING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CUBIC LATTICES; ELEMENTS; EXPANSION; INTERMEDIATE COUPLING; METALS; TRANSURANIUM ELEMENTS; 360104* - Metals & Alloys- Physical Properties; 050700 - Nuclear Fuels- Fuels Production & Properties

Citation Formats

Soederlind, P., Nordstroem, L., Lou Yongming, and Johansson, B.. Relativistic effects on the thermal expansion of the actinide elements. United States: N. p., 1990. Web. doi:10.1103/PhysRevB.42.4544.
Soederlind, P., Nordstroem, L., Lou Yongming, & Johansson, B.. Relativistic effects on the thermal expansion of the actinide elements. United States. doi:10.1103/PhysRevB.42.4544.
Soederlind, P., Nordstroem, L., Lou Yongming, and Johansson, B.. 1990. "Relativistic effects on the thermal expansion of the actinide elements". United States. doi:10.1103/PhysRevB.42.4544.
@article{osti_6389196,
title = {Relativistic effects on the thermal expansion of the actinide elements},
author = {Soederlind, P. and Nordstroem, L. and Lou Yongming and Johansson, B.},
abstractNote = {The room-temperature linear thermal-expansion coefficient is calculated for the light actinides thorium, protactinium, uranium, neptunium, and plutonium for the fcc crystal structure. The relativistic spin-orbit interaction is included in these calculations. We show that the spin-orbit splitting of the 5{ital f} band gives rise to a considerable increase of the thermal expansion and to a large extent explains the observed anomalously large thermal expansion for the neptunium and plutonium metals.},
doi = {10.1103/PhysRevB.42.4544},
journal = {Physical Review, B: Condensed Matter; (USA)},
number = ,
volume = 42:7,
place = {United States},
year = 1990,
month = 9
}