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Output details

13 - Electrical and Electronic Engineering, Metallurgy and Materials

University of Sheffield : B - Materials Science and Engineering

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Article title

Structural Transformations and Disordering in Zirconolite (CaZrTi2O7) at High Pressure

Type

D - Journal article

DOI

10.1021/ic302346g

Title of journal

Inorganic Chemistry

Article number

Volume number

Issue number

First page of article

1550

ISSN of journal

1520510X

Year of publication

2013

URL

Number of additional authors

Additional information

Combined high-pressure Raman spectroscopy and X-ray diffraction study of CaZrTi2O7 showed that this material, unique among pyrochlore-related titanates, does not undergo pressure-induced amorphisation at extreme pressure (to 80 GPa). Crucially, this combination of techniques demonstrated the reported loss of Raman modes in such materials at high pressure to be related to a cation disorder mechanism, not amorphisation. Our work shows that current understanding of amorphisation mechanisms in this class of compounds, important to application as actinide containment materials, must be re-examined. This research led to an iCASE award from Sellafield Ltd and EPSRC project (EP/L014041/1, £518k) for further investigation.

Interdisciplinary

Cross-referral requested

Research group

None

Proposed double-weighted

Double-weighted statement

Reserve for a double-weighted output

Non-English

English abstract