RE: Form factors for Ni4+ and Co4+

[Peter Zavalij]

Simply use just

Dr. Peter Y. Zavalij 
University Crystallographer
Institute for Materials Research
and Chemistry Department
Binghamton University, SUNY, Vestal Pkwy, East
Binghamton, NY 13902-6000, USA
Tel: (607)777-4298    Fax: (607)777-4623
E-mail:[EMAIL PROTECTED]
http://materials.binghamton.edu/zavalij

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-----Original Message-----
From: Whitfield, Pamela [mailto:[EMAIL PROTECTED]
Sent: Thursday, July 15, 2004 11:19 AM
To: Rietveld Mailing List (E-mail)
Subject: Form factors for Ni4+ and Co4+

Hiya all

 

I find myself having to do some work with materials containing Ni4+ and Co4+.  Unfortunately there are no form factors that I can find for these ions.  In the absence of hard numbers, what would be the best fudge to use to get sensible and defensible results?  BTW my data is from a Cu source so fluoresence rears it's ugly head.  At the moment I'm using Ni3+ and Co3+ in the absence of anything better.

 

Pam

Dr Pamela Whitfield CChem MRSC
Energy Materials Group
Institute for Chemical Process and Environmental Technology
Building M12
National Research Council Canada
1200 Montreal Road
Ottawa  ON   K1A 0R6
CANADA
Tel: (613) 998 8462         Fax: (613) 991 2384
Email: <mailto:[EMAIL PROTECTED]>
ICPET WWW: http://icpet-itpce.nrc-cnrc.gc.ca