Hi ZnO can also have a darker colour if it is obtained by thermal treatment in low pressure of oxygen. In my opinion, if all else is correct -I mean normal Soller slits, correct height,… etc- there might be sample strain. Regards N
> Le 9 déc. 2017 à 16:25, Nilesh Kulkarni <nil...@tifr.res.in> a écrit : > > yes that is surprising. pellet is black while powder is white. ZnO pellet > should also have been white. > -- > With Regards, > Nilesh Kulkarni. > ---------------------------------------------------------------------------------------------------------------- > Tata Institute of Fundamental Research > Department of Condensed Matter Physics and Materials Science > Room AB-88 > Dr Homi Bhabha Road > Navy Nagar, Colaba > Mumbai 400005 > Maharashtra, INDIA. > > Phone : 91-22-22782440 > Fax : 91-22-22784610 > Email : nil...@tifr.res.in <mailto:nil...@tifr.res.in> > Website : http://www.tifr.res.in/~nilesh <http://www.tifr.res.in/~nilesh> > XRD Website : http://www.tifr.res.in/~xrd <http://www.tifr.res.in/~xrd> > ---------------------------------------------------------------------------------------------------------------- > Please Do Not Print This Email Unless You Really Need To. > > > On Sat, Dec 9, 2017 at 1:31 AM, Joachim Breternitz > <joachim.bretern...@helmholtz-berlin.de > <mailto:joachim.bretern...@helmholtz-berlin.de>> wrote: > Hi, > > Given the fact that the peaks are shifted between the powder and the pellet > measurement, could it maybe be due to a height error of the pellet during the > measurement? > > Best, > Joachim. > > Am 8. Dezember 2017 20:48:35 MEZ schrieb Jon Wright <wri...@esrf.fr > <mailto:wri...@esrf.fr>>: > Hello, > > In the photo, the pellet is black and the powder is white. Why is that? > > Best > > Jon > > On December 8, 2017 3:35:20 PM GMT+01:00, "François Goutenoire" > <francois.gouteno...@univ-lemans.fr > <mailto:francois.gouteno...@univ-lemans.fr>> wrote: > Dear Rietveld users, > We observe an unusual asymmetric peak shape on pellet and not when the sample > has been crushed in powder. > This asymmetry is observed even at high 2theta angle. I would like to known > if someone has an explanation ? > I have put the data in the link here after > http://perso.univ-lemans.fr/~fgouten/Asymmetry > <http://perso.univ-lemans.fr/%7Efgouten/Asymmetry> > > Best Whishes, François Goutenoire > -- > ********************************************************************************************* > Pr. Francois GOUTENOIRE > e-mail: francois.gouteno...@univ-lemans.fr > <mailto:francois.gouteno...@univ-lemans.fr> > Tel: 02.43.83.33.54 > FAX: 02.43.83.35.06 > Département des Oxydes et Fluorures > Institut des Molécules et des Matériaux du Mans > IMMM - UMR CNRS 6283 > Université du Maine - Avenue Olivier Messiaen > F-72085 Le Mans Cedex 9 > FRANCE > ********************************************************************************************* > Formation Rietveld CNRS > https://cnrsformation.cnrs.fr/stage.php?stage=18098 > <https://cnrsformation.cnrs.fr/stage.php?stage=18098> > Formation SAXS et Réflectivités pour couches minces et matériaux > nanostructurés. > https://cnrsformation.cnrs.fr/stage.php?stage=18104 > <https://cnrsformation.cnrs.fr/stage.php?stage=18104> > > > -- > Diese Nachricht wurde von meinem Android-Gerät mit K-9 Mail gesendet. > > Helmholtz-Zentrum Berlin für Materialien und Energie GmbH > > Mitglied der Hermann von Helmholtz-Gemeinschaft Deutscher Forschungszentren > e.V. > > Aufsichtsrat: Vorsitzender Dr. Karl Eugen Huthmacher, stv. Vorsitzende Dr. > Jutta Koch-Unterseher > Geschäftsführung: Prof. Dr. Bernd Rech (kommissarisch), Thomas Frederking > > Sitz Berlin, AG Charlottenburg, 89 HRB 5583 > > Postadresse: > Hahn-Meitner-Platz 1 > D-14109 Berlin > > http://www.helmholtz-berlin.de <http://www.helmholtz-berlin.de/> > > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > Please do NOT attach files to the whole list <alan.he...@neutronoptics.com> > Send commands to <lists...@ill.fr <mailto:lists...@ill.fr>> eg: HELP as the > subject with no body text > The Rietveld_L list archive is on > http://www.mail-archive.com/rietveld_l@ill.fr/ > <http://www.mail-archive.com/rietveld_l@ill.fr/> > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > > > > > > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > Please do NOT attach files to the whole list <alan.he...@neutronoptics.com> > Send commands to <lists...@ill.fr> eg: HELP as the subject with no body text > The Rietveld_L list archive is on > http://www.mail-archive.com/rietveld_l@ill.fr/ > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >
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