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J. Phys. Soc. Jpn. 75S (2006) pp. 53-55  |Previous Article| |Next Article|  |Table of Contents|
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Proc. of 5th Int. Symposium on ASR-WYP-2005 – Advances in the Physics and Chemistry of Actinide Compounds –

Influence of Self-Irradiation Damage on the Pu-Based Superconductor PuCoGa5 Probed by Muon Spin Rotation

Kazuki Ohishi1, Takashi U. Ito1,2, Wataru Higemoto1 and Robert H. Heffner1

1Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195
2Department of Physics, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551

We report on muon spin rotation (µSR) measurements in PuCoGa5 single crystals in a 400 day-old sample in order to investigate the self-irradiation (aging) effect. Compared with the results in 25 day-old sample, the µSR line widths in the 400 day-old sample are found to be anomalously narrow. It is considered that the narrowing of line width is caused by random defects, which are created by Pu disintegration, namely, vortex segments are pinned randomly and three-dimensionally by the defects.

URL: http://jpsj.ipap.jp/link?JPSJS/75S/53/
DOI: 10.1143/JPSJS.75S.53


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