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

被引：6

作者：

Giulian, R. ^{[1
]}

Araujo, L. L. ^{[1
]}

Kluth, P. ^{[1
]}

Sprouster, D. J. ^{[1
]}

Schnohr, C. S. ^{[1
]}

Byrne, A. P. ^{[1
]}

Ridgway, M. C. ^{[1
]}

机构：

[1] Australian Natl Univ, Res Sch Phys & Engn, Canberra, ACT 0200, Australia

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2011年 / 44卷 / 15期

基金：

美国国家科学基金会; 澳大利亚研究理事会;

关键词：

THIN-FILMS; SIO2; NANOPARTICLES; IMPLANTATION; SILICA; LIGHT;

D O I：

10.1088/0022-3727/44/15/155401

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页数：7

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