Dear All, Could you please provide the information on low density materials, which has a specific gravity from 0.2 to 0.5 (or. The density 0.2 to 0.5 gr/cc).
If you are aware the crystal structure of date seed powder, could you please send it to me. Thanks, and best wishes Husin Husin Sitepu, PhD<http://scholar.google.com/citations?hl=en&user=cUTV8HkAAAAJ&view_op=list_works&pagesize=100> Saudi Aramco Research and Development Center Technical Services Division Advanced Analysis Unit Bld. 2296, Room: GB-110 Phone: 876-3050 Email: sitep...@aramco.com<mailto:sitep...@aramco.com> http://scholar.google.com/citations?hl=en&user=cUTV8HkAAAAJ&view_op=list_works&pagesize=100 From: alan.he...@gmail.com [mailto:alan.he...@gmail.com] On Behalf Of Alan Hewat Sent: Wednesday, July 16, 2014 9:43 AM To: rietveld_l@ill.fr Subject: Re: information for rietveld refinement > Im student researcher I need a guidelines for refinement structure double > perovskite > using fullprof or other software in case to reduce Factors and than draw > structures Dear Colleague. It is difficult to reply to such a general query. You could start by reading the FullProf manual and tutorials on https://www.ill.eu/sites/fullprof/php/tutorials.html :-) The first question is the symmetry (space group). Do a google search for: https://www.google.com/webhp?q=%22double+perovskite%22+symmetry Then look in particular at the free articles on http://www.researchgate.net/ (3rd link) To search for examples of double perovskites, try http://www.ill.fr/ Log on as "demo" and search for Element=O6 and ElementCount=3 i.e. http://icsd.ill.eu/icsd/index.php?action=Search&elements=o6&elementc=3 If you then click on the formula eg Cu (Nb2 O6) the structure will be drawn using Java in a new window. (You must install Java in your browser and give it permission to run). You can download the CIF files, calculate bond lengths, draw the powder patterns etc by clicking on those buttons. I hope this will get you started, but then I suggest you join the Rietveld mailing list, which has over 1000 members who can advise you about specific problems. To join, send an email to <lists...@ill.fr<mailto:lists...@ill.fr>> with the title: SUBSCRIBE Rietveld_L "your name and lab" With kind regards, Alan Hewat (Rietveld list manager) ______________________________________________ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <alan.he...@neutronoptics.com<mailto:alan.he...@neutronoptics.com>> +33.476.98.41.68 http://www.NeutronOptics.com/hewat ______________________________________________ ________________________________ The contents of this email, including all related responses, files and attachments transmitted with it (collectively referred to as “this Email”), are intended solely for the use of the individual/entity to whom/which they are addressed, and may contain confidential and/or legally privileged information. This Email may not be disclosed or forwarded to anyone else without authorization from the originator of this Email. If you have received this Email in error, please notify the sender immediately and delete all copies from your system. Please note that the views or opinions presented in this Email are those of the author and may not necessarily represent those of Saudi Aramco. The recipient should check this Email and any attachments for the presence of any viruses. Saudi Aramco accepts no liability for any damage caused by any virus/error transmitted by this Email.
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