Volume 78, Number 5, June 2007
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||31 May 2007|
Role of self-irradiation defects on the ageing of
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: firstname.lastname@example.org
Accepted: 26 April 2007
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-nmsized 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
© Europhysics Letters Association, 2007
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