Difficulties in indexing monoclinic crystalline materials by wide angle X-ray diffraction
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For monoclinic polycrystalline materials, how can we uniquely index the X-ray diffraction spectrum so that we can calculate the accurate lattice parameters a, b, c and beta? Due to the fact that there are four unknown variables coupled to determine d-spacings, we can not easily read out the lattice parameters until enough diffraction peaks positions are obtained correctly. This leads to two questions
1. How do we get the full diffraction peaks from a monoclinic polycrystalline sample if it is partially textured?