The Gd–Ag–Al system
DOI: 10.1016/S0925-8388(03)00480-8
Title: The Gd–Ag–Al system
Journal Title: Journal of Alloys and Compounds
Volume: 363
Publication Date: 28 January 2004
Start Page: 248
End Page: 253
Published online: online 28 June 2003
ISSN: 0925-8388
Author: B.M Stel’makhovych, O.V Zhak, N.R Bilas, Yu.B Kuz’ma
Affiliations:
  • Department of Analytical Chemistry, Ivan Franko National University of Lviv, Kyrylo and Mefodij Str. 6, Lviv 19005, Ukraine
  • Abstract: atic investigation of the interaction between the components in the Gd–Ag–Al system has been carried out and the phase diagram at 770 K has been constructed. The existence of the earlier known ternary compounds Gd1.85Ag8.2–9.4Al8.8–7.6 (Th2Ni17-type structure), Gd8Ag20Al46 (Yb8Cu17Al49-type structure) and GdAg2.2–2.8Al2.8–2.2 (DyAg2.4Al2.6-type structure) has been confirmed and their homogeneity ranges have been established. Four new ternary compounds have been obtained: Gd3Ag2.0–2.8Al9.0–8.2 (space group Immm, La3Al11-type structure, a=0.43306(3) nm, b=1.26706(9) nm, c=1.00145(7) nm, RI=0.090, Rp=0.145), Gd3Ag2Al7 (space group , Ca3Cu2Al7-type structure, a=0.55668(3) nm, c=2.6382(2) nm, RI=0.076, Rp=0.137), GdAg0.8Al1.2 (space group Imma, KHg2-type structure, a=0.45899(6) nm, b=0.72479(8) nm, c=0.7889(1) nm, RI=0.083, Rp=0.140) and ∼GdAg3.5Al1.5 (hexagonal symmetry, a=0.5400(3) nm, c=0.9268(5) nm).
    Accepted: 8 May 2003
    Received: 2 April 2003
    Revised: 8 May 2003
    Keywords: Rare earth compounds; Crystal structure; Phase diagram; X-Ray diffraction
    Email: ukuzma@franko.lviv.ua

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