Dear Shay, that could be explained in a lot of ways, including your new phase is possibly amorphous, or just too thin, or the amount is low, or corundum numbers are too different, etc. It is difficult to guess without knowledge on the exact system you study. By all means, the measurement technique is not guilty.
Kind regards, Eduard Levin, On Mon, 29 Sep 2014 07:47:49 +0300, Shay Tirosh wrote > Dear Rietvelders > > One of our assumption is that a new phase is forming during an in-situ > process(done during XRD scanning) on a powder (few micron size crystalytes) > surface (the powder is not randomly oriented). However attempts to obtain new > or shifted x-ray diffraction peaks have failed. > > Is it possible that we failed in getting new peaks since this surface grow > (new phase) is a slab small in its wight percentage (say <1%) compare to the > original large crystalytes? > > Scanning done using Bragg Brentano geometry xrd. We have tried teta/2-teta > and teta/teta with source at 5deg. The detector was multi-channel. > > Can you please recommend on XRD method capable of determine such case? > > Thank you from advance > > Shay > > -- > > _________________________________________________ > > Dr. Shay Tirosh > Institute for Nanotechnology & Advanced Materials > Bar Ilan University > Ramat Gan, 52900 > Israel > Phone: +972-(0)30-531-7320 > Mobile: +972-(0)54-8834533 > Email: stiro...@gmail.com > _________________________________________________ -- Open WebMail Project (http://openwebmail.org)
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