As far you know, the precision of the crystal size calculated by Xrpd is lower than other method.
Now I am not in my office so I do not have the exact reference, if I remember right there is something in Powder Diffraction: Theory and Practice. From: [email protected] <[email protected]> On Behalf Of Victor Zenou Sent: Thursday, August 23, 2018 8:42 PM To: [email protected] Subject: [GSAS-II] Over estimation of crystallite size Dear everyone. I used GSAS-II to estimate crystallite size from lab PXRD. The sample was annealed anatase. Before annealing all results (GSAS-II, Debye function analysis (DFA), GSAS and HRTEM) were the same, about 5nm. After annealing GSAS-II gave 19/21(0.3) nm, while DFA gave 14(5) nm and HRTEM gave 12(3). Does anyone got the same , what seem to be, over estimation by GSAS-II? Of course, using standard deviation give not so far results. Best regards,Victor בתאריך יום ה׳, 23 באוג׳ 2018, 20:00, מאת <[email protected] <mailto:[email protected]> >: Send GSAS-II mailing list submissions to [email protected] <mailto:[email protected]> To subscribe or unsubscribe via the World Wide Web, visit https://mailman.aps.anl.gov/mailman/listinfo/gsas-ii or, via email, send a message with subject or body 'help' to [email protected] <mailto:[email protected]> You can reach the person managing the list at [email protected] <mailto:[email protected]> When replying, please edit your Subject line so it is more specific than "Re: Contents of GSAS-II digest..." Today's Topics: 1. Help with refining instrumental parameters (Emily Siska) 2. Re: Help with refining instrumental parameters (Sergey Ushakov) ---------------------------------------------------------------------- Message: 1 Date: Wed, 22 Aug 2018 10:58:38 -0700 From: Emily Siska <[email protected] <mailto:[email protected]> > To: [email protected] <mailto:[email protected]> Subject: [GSAS-II] Help with refining instrumental parameters Message-ID: <CA+xw77uW_ZF-7N3f4UU7kiZFQ-vh42VkZ3MsAXPGj04BM4g=7...@mail.gmail.com <mailto:[email protected]> > Content-Type: text/plain; charset="utf-8" In GSAS I when there was more than one phase you could refine GU GV, GW and LX, LY for each phase separately. Is that possible in GSAS II? If so how? Sorry if you have received this message multiple times - I have been having trouble with the server. Thank you for your help! Best Regards, Emily Siska -- Emily Siska Chemistry Graduate Assistant Chemistry/HiPSEC Science and Engineering Building, Room 2173 University of Nevada, Las Vegas 4505 S. Maryland Pkwy. Las Vegas, NV 89154-4003 Office: (702) 894-1478 Cell: (818) 642-7718 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.aps.anl.gov/pipermail/gsas-ii/attachments/20180822/bda1cd13/attachment-0001.html> ------------------------------ Message: 2 Date: Wed, 22 Aug 2018 11:16:49 -0700 From: Sergey Ushakov <[email protected] <mailto:[email protected]> > To: [email protected] <mailto:[email protected]> Subject: Re: [GSAS-II] Help with refining instrumental parameters Message-ID: <CAG1YaUP8=2=jyqb5gqfxg4mccrpwv1xzwh+pmajpoh9qjft...@mail.gmail.com <mailto:jyqb5gqfxg4mccrpwv1xzwh%[email protected]> > Content-Type: text/plain; charset="utf-8" In GSAS-2 you refine size and strain for each phase instead. It makes sense since instrument parameters do not vary with phase! On Wed, Aug 22, 2018 at 10:58 AM, Emily Siska <[email protected] <mailto:[email protected]> > wrote: > In GSAS I when there was more than one phase you could refine GU GV, GW > and LX, LY for each > phase separately. Is that possible in GSAS II? If so how? > > Sorry if you have received this message multiple times - I have been > having trouble with the server. > > > Thank you for your help! > > Best Regards, > Emily Siska > > > -- > Emily Siska > > Chemistry Graduate Assistant > Chemistry/HiPSEC > > Science and Engineering Building, Room 2173 > University of Nevada, Las Vegas > 4505 S. Maryland Pkwy. > Las Vegas, NV 89154-4003 > Office: (702) 894-1478 > Cell: (818) 642-7718 > > _______________________________________________ > GSAS-II mailing list > [email protected] <mailto:[email protected]> > https://mailman.aps.anl.gov/mailman/listinfo/gsas-ii > -- -- Sergey Ushakov PhD Staff Research Associate Peter A Rock Thermochemistry Laboratory and NEAT ORU Rm 4415, Chemistry Annex University of California, Davis Davis, CA 95616 phone (530) 902-8185 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.aps.anl.gov/pipermail/gsas-ii/attachments/20180822/4f04c8cb/attachment-0001.html> ------------------------------ _______________________________________________ GSAS-II mailing list [email protected] <mailto:[email protected]> https://mailman.aps.anl.gov/mailman/listinfo/gsas-ii End of GSAS-II Digest, Vol 174, Issue 1 ***************************************
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