Powder X-ray diffraction data of BaFI

This paper presents the powder X-ray diffraction data of BaFI recorded usin g a Guinier diffractometer and Mo K-alpha 1 radiation. BaFI stabilizes at s tandard temperature of 25 degrees C and standard-atmospheric pressure (STP) in the tetragonal structure (space group P4/nmm; No. 129) with lattice par ameters a = 4.660(1) Angstrom and c = 7.960(5) Angstrom. Our observed patte rn is different from the existing observed powder diffraction data reported in the PDF files 34-716 (Beck, 1976) and 31-139 (Nicklaus, 1976),but match es almost perfectly with the pattern calculated by us from the reported sin gle crystal data (Liebich and Nicollin, 1977) and with the calculated data available in PDF file 70-0481. Further, our data provide a number of new Br agg peaks extending beyond the range of d values available in the existing PDF files. (C) 2000 International Centre for Diffraction Data. [S0885-7156( 00)00401-2].