Swift heavy ion irradiation of Pt nanocrystals: I. Shape transformation and dissolution

R. Giulian; L. L. Araujo; P. Kluth; D. J. Sprouster; C. S. Schnohr; A. P. Byrne; M. C. Ridgway

doi:10.1088/0022-3727/44/15/155401

Swift heavy ion irradiation of Pt nanocrystals: I. Shape transformation and dissolution

R. Giulian^*, L. L. Araujo, P. Kluth, D. J. Sprouster, C. S. Schnohr, A. P. Byrne, M. C. Ridgway

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

We report on the effects of swift heavy ion irradiation of embedded Pt nanocrystals (NCs), which change from spheres to prolate spheroids to rods upon irradiation. Using a broad range of ion irradiation energies and NC mean sizes we demonstrate that the elongation and dissolution processes are energy and size dependent, attaining comparable levels of shape transformation and dissolution upon a given energy density deposited in the matrix. The NC shape transformation remains operative despite discontinuous ion tracks in the matrix and exhibits a constant threshold size for elongation. In contrast, for ion irradiations in which the ion tracks are continuous, the threshold size for elongation is clearly energy dependent.

Original language	English
Article number	155401
Journal	Journal Physics D: Applied Physics
Volume	44
Issue number	15
DOIs	https://doi.org/10.1088/0022-3727/44/15/155401
Publication status	Published - 20 Apr 2011

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abstract = "We report on the effects of swift heavy ion irradiation of embedded Pt nanocrystals (NCs), which change from spheres to prolate spheroids to rods upon irradiation. Using a broad range of ion irradiation energies and NC mean sizes we demonstrate that the elongation and dissolution processes are energy and size dependent, attaining comparable levels of shape transformation and dissolution upon a given energy density deposited in the matrix. The NC shape transformation remains operative despite discontinuous ion tracks in the matrix and exhibits a constant threshold size for elongation. In contrast, for ion irradiations in which the ion tracks are continuous, the threshold size for elongation is clearly energy dependent.",

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AU - Giulian, R.

AU - Araujo, L. L.

AU - Kluth, P.

AU - Sprouster, D. J.

AU - Schnohr, C. S.

AU - Byrne, A. P.

AU - Ridgway, M. C.

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AB - We report on the effects of swift heavy ion irradiation of embedded Pt nanocrystals (NCs), which change from spheres to prolate spheroids to rods upon irradiation. Using a broad range of ion irradiation energies and NC mean sizes we demonstrate that the elongation and dissolution processes are energy and size dependent, attaining comparable levels of shape transformation and dissolution upon a given energy density deposited in the matrix. The NC shape transformation remains operative despite discontinuous ion tracks in the matrix and exhibits a constant threshold size for elongation. In contrast, for ion irradiations in which the ion tracks are continuous, the threshold size for elongation is clearly energy dependent.

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JO - Journal Physics D: Applied Physics

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Swift heavy ion irradiation of Pt nanocrystals: I. Shape transformation and dissolution

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