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University of Sydney

1. Aughterson, Robert. The Characterisation and Ion-Irradiation Tolerance of the Complex Ceramic Oxides Ln2TiO5 (Ln = lanthanides) .

Degree: 2018, University of Sydney

Ceramics are a promising candidate for nuclear waste-form matrices, as part of the nuclear fuel matrix, and as cladding for fission or diverters for fusion reactors. This is due to their chemical durability, the ability to incorporate high loadings of radionuclides with minimal leaching, and tolerance to exposure to high-energy particles. It is the radiation tolerance that is the main focus of this study. There are two main parts to this study: the characterisation of the crystal structure of a range of compounds, all with the Ln2TiO5 (Ln = lanthanides) stoichiometry, and the testing of their ion-irradiation response. Ion-irradiation is used throughout this study to simulate the damage effects of high-energy particles such as those from alpha-decay. In particular, in-situ ion-irradiation coupled with transmission electron microscopy (TEM) and electron diffraction are used for radiation damage measurement. The Ln2TiO5 series of compounds consist of four major crystallographic structure types; orthorhombic (Pnma), hexagonal (P63/mmc), cubic (Fm-3m), and cubic (Fd-3m). The final structure type is dependent on the ionic radius of the lanthanide used, the fabrication regime (temperature and pressure), and whether combinations of lanthanides are used. In this study all these variables, except pressure, are investigated. The full range of structure types was fabricated and their crystal structure characterised. This PhD study provides systematic and comprehensive ion-irradiation experimental data and analysis for a large range of Ln2TiO5 compounds coupled with crystal structure detail. The effect of crystal structure on ion-irradiation response shown here means Ln2TiO5 compounds can be tailored to give the best possible properties for application.

Subjects/Keywords: Ln2Ti05; waste-forms; nuclear; ion-iradiation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Aughterson, R. (2018). The Characterisation and Ion-Irradiation Tolerance of the Complex Ceramic Oxides Ln2TiO5 (Ln = lanthanides) . (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/19666

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Aughterson, Robert. “The Characterisation and Ion-Irradiation Tolerance of the Complex Ceramic Oxides Ln2TiO5 (Ln = lanthanides) .” 2018. Thesis, University of Sydney. Accessed January 23, 2019. http://hdl.handle.net/2123/19666.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Aughterson, Robert. “The Characterisation and Ion-Irradiation Tolerance of the Complex Ceramic Oxides Ln2TiO5 (Ln = lanthanides) .” 2018. Web. 23 Jan 2019.

Vancouver:

Aughterson R. The Characterisation and Ion-Irradiation Tolerance of the Complex Ceramic Oxides Ln2TiO5 (Ln = lanthanides) . [Internet] [Thesis]. University of Sydney; 2018. [cited 2019 Jan 23]. Available from: http://hdl.handle.net/2123/19666.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Aughterson R. The Characterisation and Ion-Irradiation Tolerance of the Complex Ceramic Oxides Ln2TiO5 (Ln = lanthanides) . [Thesis]. University of Sydney; 2018. Available from: http://hdl.handle.net/2123/19666

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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