Local Structure from Diffraction by Takeshi Egami (auth.), S. J. L. Billinge, M. F. Thorpe

By Takeshi Egami (auth.), S. J. L. Billinge, M. F. Thorpe (eds.)

This sequence of books, that's released on the price of approximately one in keeping with yr, addresses basic difficulties in fabrics technological know-how. The contents hide a wide variety of themes from small clusters of atoms to engineering fabrics and contain chemistry, physics, fabrics technological know-how and engineering, with size scales starting from Ångstroms as much as millimeters. The emphasis is on uncomplicated technological know-how instead of on purposes. each one booklet specializes in a unmarried region of present curiosity and brings jointly best specialists to provide an up to date dialogue in their paintings and the paintings of others. each one article includes adequate references that the reader can entry the proper literature. thank you are given to the heart for basic fabrics learn at Michigan country collage for aiding this sequence. M.F. Thorpe, sequence Editor e mail: thorpe @ pa.msu.edu East Lansing, Michigan PREFACE the most difficult difficulties within the research of constitution is to represent the atomic short-range order in fabrics. Long-range order might be decided with a excessive measure of accuracy by means of examining Bragg top positions and intensities in information from unmarried crystals or powders. besides the fact that, information regarding short-range order is inside the diffuse scattering depth. this is often tricky to investigate since it is low in absolute depth (though the built-in depth can be major) and commonly unfold in reciprocal space.

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These examples make it clear that AXS is a powerful technique for obtaining partial structure information in complex disordered materials, and in particular can probe the structure of minority species in a majority host. With the more powerful sources now available, and a corresponding development in experimental methods and analysis techniques, we can expect that before tOO long full partial structure analysis, with complete derivation of all partial structure factors, will become routine. Acknowledgments.

L. Saboungi, private communication 14. M. Misawa and K. Suzuki, Trans. J. Phys. Soc. Jpn. 44, 1612 (1978) 15. J. -L. Saboungi and J. E. Enderby, Phys. Rev. Lett. R. Welberry Research School of Chemistry Australian National University Canberra, ACT 0200 Australia INTRODUCTION Crystal structure analysis based on Bragg diffraction data reveals only information about the average crystal structure, such as atomic positions, temperature factors and site occupancies. Additional information about static and thermal disorder w i t h i n the crystal can be obtained by analysing the diffuse scattering.

Teslic, T. Egami and J. E. Fischer, Phys. Rev. B 51, 5973 (1995). 45. T. Egami, H. D. Rosenfeld and Ruizhong Hu, Ferroelectrics 136, 15 (1992). 46. H. D. Rosenfeld and T. Egami, Ferroelectrics 150, 183 (1993). 47. S. J. L. Billinge and G. H. Kwei, J. Phys. Chem. Solids 57, 1457 (1996). 48. T. Egami, W. Dmowski and R. Brezny, SAE Publication 970461 (1997). 49. F. Mohiuddin-Jacobs and S. J. L. Billinge, unpublished. 21 ANOMALOUS X-RAY SCATTERING FROM DISORDERED MATERIALS David L. Price and Marie-Louise Saboungi Argonne National Laboratory, Argonne, IL 60439 INTRODUCTION Many structural issues in disordered systems, such as liquids, polymers and glasses, are still unresolved and controversial.

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