Dear all,

I am a new member of this mailing list. My background is environmental
engineer. At the moment I am conducting a research related to the
crystalline iron oxide magnetite. One of the analyses that I have to do is
the determination the unit cell dimension (lattice parameter) of the crystal
from X-ray powder diffraction data. So far, for the XRD analysis I have
mixed my sample with an internal standard. Because I am a beginner in the
crystallography, I would like to hear opinions on two things:

- Is using an internal standard a good way of sample preparation for the
determination of unit cell?. Can anybody give me an example of a good
internal standard that can be used for XRD analysis?.

- Can anybody give me a suggestion which free software can be used for the
determination of unit cell parameter from XRD powder diffraction data (with
internal standard)?. I have learned a little about FullProf but I don’t know
whether this program can handle XRD data with internal standard or not. My
knowledge about FullProf is very limited, therefore if some hints about this
program are more than welcome. Is perhaps FullProf too complicated for me as
a beginner?.



Thanks a lot and best regards



Gumelar Pritosiwi

-- 
Gumelar Pritosiwi
Institute of Environmental Technology and Energy Economics
Hamburg University of Technology
Eissendorfer Str. 40
21073 Hamburg
Tel  +49 40 42878 3319
Fax  +49 40 42878 2315

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