Dear all, If any one can give me the cell paramaters and the atomic position of the orthorhombic phase of CrVO4 Thanks ...
983
Dr Karsten Knorr
knorr@...
Jan 6, 2003 9:00 am
Dear Hamid, this is from the ICSD database: *data for ICSD #36244 Coll Code 36244 Rec Date 1980/01/01 Chem Name Chromium Vanadate Structured Cr V O4 ...
984
Wilson Crichton
crichton@...
Jan 6, 2003 9:11 am
Dear Hamid, At ambient conditions CrVO4 has the NiSO4-type structure. Frazer and Brown (1962) Physical Review vol 125 p1283, for example, have investigated the...
While the following is for single crystal applications, some might find it useful to try the following on Le Bail or Pawley extracted data for structure...
Dear all, I need the unit cell parameters and atomic positions of TbN. I could not find the original literature about it. Does anyone has these data...
Hello, Experts may have divergent opinions - quite normal (??). But there is few place for expressing divergent opinions since only the "truth" is supposed to...
Hi, Already a second text at the "Divergent opinions in Powder Diffraction" Web page, entitled : "Is it possible to have only one standard for instrumental...
Hi, Being not an expert on size broadening effects I would like to know why an 'increasing diffracting volume leads to an increased symmetric broadening'. See...
... Explanation without any formula : If you consider the Bragg Brentano reflexion geometry, the X-ray penetrating depth is of the order of microns for highly...
... Not yet clear. What you mean by 'diffracting plane' is not the plane that contains the incoming wave vector k_in and the reflected wave vector k_out (as is...
... I can define nothing in a few lines. Good definitions need 56 pages (chapters 7 & 8 in the book "Introduction to X-Ray Powder Diffractometry" by Ron...
993
Lubomir Smrcok
uachsmrk@...
Jan 12, 2003 1:35 pm
This message is to remind you of the deadline for preliminary registration, January 31st. Note that the Organizers have not distributed ANY printed materials...
994
Jinhang Wang
w_jinhang@...
Jan 14, 2003 2:00 am
Dear all, Sorry for so simple questions, as I am a beginner in this field. Can anyone tell me in detail how to do the difference fourier method to find the...
Hello, News from the commercial side of SDPD. Academia has a long tradition to offer services to the industry. I have done this myself, with a small web page...
996
Claudio Perottoni
perott@...
Jan 24, 2003 5:05 pm
Hi, Could someone point me to a commercial manufacturer of Gandolfi x-ray cameras? Thanks, Cláudio. -- ...
The first edition of the IUCr Commission on Crystallographic Computing Newsletter is now available as an Acrobat PDF (~5Meg and 106 pages) (and also as a...
Apologies for this resend: There is a minor update version of the January 2003 edition of the IUCr Computing Commission Newsletter. This fixes some minor...
News about SDPD, The SDPDRR-2 report is available at the Chemistry Preprint Server. http://preprint.chemweb.com/analchem/0301002 you may need to subscribe to...
Hello, It does not seem that 2002 will be the year corresponding to a jump over the limit of 100 SDPD papers - not yet a real sign for the expected and...
Dear all: I am trying to learn superspace group with Jana 2000. I often got confused. Wish you could help me out: I learned from a paper a superspace group of...
Hello, The recent update of the SDPD Database was the occasion, as usual every year, for people to see how it is incomplete. Of course, any addition is...
1003
Vincent Favre-Nicolin
vincefn@...
Feb 4, 2003 8:09 pm
Hi, A new version of FOX "Free Objects fo Xtallography" is available. It brings a few new features, and fixes one serious bug, so all users are encouraged to ...
Hello, Seems that I concluded too fast that 2002 would not see the 100 SDPD papers gap passed through. I made a more thorough research of references (the more ...
1007
Peter Zavalij
zavalij@...
Feb 12, 2003 4:09 am
Armel, believe me it's many more than 100 SPDP papers. For example, only one of about 15 powder structures I published are in SPDP. It is not in any way your...
... Sure. Maybe you know the sketch of a french humorist Fernand Raynaud: A merchant displays on his stall: " Here, one sells beautiful oranges not expensive...
1009
Peter Zavalij
zavalij@...
Feb 12, 2003 2:50 pm
Well, it is not as bad as it seems, it is much worse. For example, two Acta Cryst papers: "The crystal structure of layered methylammonium molybdate...
... Not as worse as ICDD a few years ago, with 60000 entries instead of 300000 ;-). Moreover, the www.cristal.org staff is quite small (one manager) and is...
1011
Peter Zavalij
zavalij@...
Feb 12, 2003 9:42 pm
I believe you could get more entries if you provide some kind of fill-in form with minimum information that is needed. About Rietveld refinement of an...
... Further to this - does solving a structure via model building using brain power count for inclusion to the the SDPD stats? Or is it mainly restricted to...
Dear all, I am trying to do a 2 phase refinement in Fullprof (Si as internal standard, and profile matching for an indexed but otherwise unidentified phase). I...
