Transcription of Estimating Crystallite Size Using XRD
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Estimating Crystallite Size Using XRD
Estimating Crystallite SizeEstimating Crystallite SizeEstimating Crystallite SizeEstimating Crystallite SizeUsing XRDU sing XRDU sing XRDU sing XRDS cott A Speakman, Center for Materials Science and EngineeringCenter for Materials Science and These slides have not been extensively proof-read, and therefore may contain errors. While I have tried to cite all references, I may have missed some these slides were prepared for an informal lecture and not for publication. If you note a mistake or a missing citation, please let me know and I will correct it. I hope to add commentary in the notes section of these slides, offering additional details. However, these notes are incomplete so far. Center for Materials Science and of Today s Lecture Provide a quick overview of the theory behind peak profile analysis Discuss practical considerations for analysis Demonstrate the use of lab software for analysis empirical peak fitting Using MDI Jade Rietveld refinement Using HighScore Plus Discuss other software for peak profile analysis Briefly mention other peak profile analysis methods Warren Averbach Variance method Mixed peak profiling whole pattern Discuss other ways to evaluate Crystallite size Assumptions: you understand the basics of crystallography, X-ray
– prisms or cylinders • Most applications of Scherrer analysis assume spherical crystallite shapes • If we know the average crystallite shape from another analysis, we can select the proper value for the Scherrer constant K • Anistropic peak shapes can …
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