Role of self-irradiation defects on the ageing of

F. Jutier; J.-C. Griveau; C. J. van der Beek; E. Colineau; F. Wastin; J. Rebizant; P. Boulet; T. Wiss; H. Thiele; E. Simoni

doi:10.1209/0295-5075/78/57008

All issues

Volume 78 / No 5 (June 2007)

EPL, 78 5 (2007) 57008

Abstract

Issue		EPL Volume 78, Number 5, June 2007


Article Number		57008
Number of page(s)		6
Section		Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
DOI		https://doi.org/10.1209/0295-5075/78/57008
Published online		31 May 2007

EPL, 78 (2007) 57008

Role of self-irradiation defects on the ageing of $\chem{{}^{239}PuCoGa_5}$

F. Jutier¹, J.-C. Griveau¹, C. J. van der Beek², E. Colineau¹, F. Wastin¹, J. Rebizant¹, P. Boulet¹, T. Wiss¹, H. Thiele¹ and E. Simoni³

¹ European Commission, Joint Research Centre, Institute for Transuranium Elements Postfach 2340, 76125 Karlsruhe, Germany
² Laboratoire des Solides Irradiés, CNRS-UMR 7642 & CEA/DSM/DRECAM, Ecole Polytechnique 91128 Palaiseau Cedex, France
³ Institut de Physique Nucléaire - 91406 Orsay Cedex, France

Corresponding author: fjutier@sckcen.be

Received: 2 November 2006
Accepted: 26 April 2007

Abstract

Low-temperature accumulation and annealing experiments, in conjunction with electrical resitivity and critical current density measurements, were used to study the ageing of the actinide superconductor PuCoGa₅. These measurements reveal that 2-nm $\hbox{--}$ sized non-superconducting point-like regions are the main damages formed during room temperature ageing; smaller point-like defects are irrelevant to transport properties. Defect sizes and densities deduced from experiment agree with Transmission Electron Microscopy observations.

PACS: 74.62.Dh – Effects of crystal defects, doping and substitution / 74.25.Qt – Vortex lattices, flux pinning, flux creep / 61.80.-x – Physical radiation effects, radiation damage

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