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

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.

Authors:
; ; ; ; ; ;  [1]
  1. ANU
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
FOREIGN
OSTI Identifier:
1028514
Resource Type:
Journal Article
Journal Name:
J. Phys. D
Additional Journal Information:
Journal Volume: 44; Journal Issue: (15) ; 03, 2011; Journal ID: ISSN 0022-3727
Country of Publication:
United States
Language:
ENGLISH
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; DISSOLUTION; ELONGATION; ENERGY DENSITY; HEAVY IONS; IRRADIATION; SHAPE; SPHEROIDS; TRANSFORMATIONS

Citation Formats

Giulian, R., Araujo, L. L., Kluth, P., Sprouster, D. J., Schnohr, C. S., Byrne, A. P., and Ridgway, M. C. Swift heavy ion irradiation of Pt nanocrystals: I. shape transformation and dissolution. United States: N. p., 2014. Web. doi:10.1088/0022-3727/44/15/155401.
Giulian, R., Araujo, L. L., Kluth, P., Sprouster, D. J., Schnohr, C. S., Byrne, A. P., & Ridgway, M. C. Swift heavy ion irradiation of Pt nanocrystals: I. shape transformation and dissolution. United States. doi:10.1088/0022-3727/44/15/155401.
Giulian, R., Araujo, L. L., Kluth, P., Sprouster, D. J., Schnohr, C. S., Byrne, A. P., and Ridgway, M. C. Wed . "Swift heavy ion irradiation of Pt nanocrystals: I. shape transformation and dissolution". United States. doi:10.1088/0022-3727/44/15/155401.
@article{osti_1028514,
title = {Swift heavy ion irradiation of Pt nanocrystals: I. shape transformation and dissolution},
author = {Giulian, R. and Araujo, L. L. and Kluth, P. and Sprouster, D. J. and Schnohr, C. S. and Byrne, A. P. and Ridgway, M. C.},
abstractNote = {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.},
doi = {10.1088/0022-3727/44/15/155401},
journal = {J. Phys. D},
issn = {0022-3727},
number = (15) ; 03, 2011,
volume = 44,
place = {United States},
year = {2014},
month = {9}
}