Conclusion
Pair distribution function techniques have been extremely successful in revealing details of the local structure that are important to the behavior of the electronic oxides. Although we are still actively continuing our study of these systems, we are also beginning to broaden the scope of our work and apply these techniques to the study of other classes of materials. We have been very interested in using local structural techniques to study possible disorder in metallic alloys. As a start, we are studying the local structure of plutonium and its alloys in order to learn more about bonding in these systems; in particular, we hope to learn more about the role of the localization and itinerancy of the 5f electrons, about the forces between atoms, about possible disorder in the structure, and about the many phase transitions that take place. At the same time, we have also been interested in the extension of PDF techniques to include differential PDF techniques. We are hopeful that isotopic substitution neutron scattering or near-resonant x-ray diffraction will become just as useful a technique as the PDF technique has been and that it will help elucidate the local structure where interfering bonds obscure the correlations of interest or where the structure becomes so complex that the pair distribution function becomes too complicated for analysis. When the DPDF experiments described here are completed, we hope that they will serve as good examples of what can be done.
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Kwei, G.H., Louca, D., Billinge, S.J., Rosenfeld, H. (2002). Recent “Local” Structural Studies: Metallic Alloys, Superconductors and Proteins. In: Billinge, S.J.L., Thorpe, M.F. (eds) Local Structure from Diffraction. Fundamental Materials Research. Springer, Boston, MA. https://doi.org/10.1007/0-306-47077-2_17
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