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X-ray Powder Diffraction in Conservation Science: Towards Routine Crystal Structure Determination of Corrosion Products on Heritage Art Objects
Published on: June 8, 2016
Identifying and indexing icosahedral quasicrystals from powder diffraction patterns.
P J Lu1, K Deffeyes, P J Steinhardt
1Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
Physical Review Letters
|January 22, 2002
Summary
A new method identifies quasicrystals using powder diffraction data and standardized indexing. This approach revealed promising new quasicrystal candidates in natural minerals for further research.
Area of Science:
- Materials Science
- Crystallography
Background:
- Quasicrystals are complex crystalline structures with unique properties.
- Identifying new quasicrystals is crucial for advancing materials science.
- Standardized methods for analyzing diffraction data are needed.
Purpose of the Study:
- To develop a standardized scheme for identifying quasicrystals.
- To apply this scheme to a large dataset of powder diffraction patterns.
- To discover novel quasicrystal candidates.
Main Methods:
- Development of a novel identification scheme for quasicrystals.
- Application of the scheme to powder diffraction data.
- Standardized indexing of diffraction patterns.
Main Results:
- Successful implementation of the quasicrystal identification scheme.
- Analysis of a comprehensive catalog of powder diffraction patterns.
- Identification of several promising candidate quasicrystals, including in natural minerals.
Conclusions:
- The presented scheme provides a robust method for quasicrystal identification.
- The discovery of new candidates warrants further investigation.
- This work contributes to the field of materials discovery.
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