Kurt,
Back when I was doing this I just purchased Y2O3 from a conventional chemical supplier and annealed it at high temperature (as high as you can easily get to, usually something like 1150C unless you have really fancy furnaces and crucibles) for a few days. Alex Y ________________________________________ Dr. Alexandre (Alex) F. T. Yokochi Assistant Professor Department of Chemical Engineering Oregon State University Corvallis, OR 97331-2702 Voice: (541) 737-9357 Fax: (541) 737-4600 http://oregonstate.edu/~yokochia ----- Original Message ----- From: Kurt Leinenweber <mailto:[EMAIL PROTECTED]> To: rietveld_l@ill.fr Sent: Tuesday, October 14, 2008 8:17 PM Subject: source for Y2O3? Dear Rietvelders, In September there was a discussion of refining the polarization of an instrument, and Lachlan and Matthew both suggested Y2O3. The time has come to do the measurement, and I was wondering if anyone has suggestions for a good source and annealing schedule for the Y2O3? Is the already annealed material available as an XRD standard? Thank you very much, - Kurt ********* Kurt Leinenweber Dept. of Chemistry and Biochemistry Arizona State University Tempe, AZ 85287-1604 phone (480)-965-8853 fax (480)-965-2747 ***********