A. Leithejasper et P. Rogl, THE CRYSTAL-STRUCTURE OF NDFE1-XSB2 AND ISOTYPIC COMPOUNDS RE(FE, CO)1-XSB2 (RE-EQUIVALENT-TO-LA, CE, PR, SM, GD), Journal of alloys and compounds, 203(1-2), 1994, pp. 133-136
New compounds REFe1-xSb2 and RECo1-xSb2 (RE = La, Ce, Pr, Nd, Sm, Gd)
were synthesized by argon arc melting elemental mixtures followed by a
nnealing at 800-degrees-C for 7 days. The crystal structure of NdFe1-x
Sb2 was determined from single-crystal X-ray counter data. NdFe1-xSb2
crystallizes in the ZrCuSi2-type structure with the centrosymmetric sp
ace group P4/nmm. The tetragonal lattice parameters are a = 0.43514(6)
nm and c = 0.96518(13) nm; Z = 2. For 273 reflections (\F(o)\ > 2sigm
a) the residual values are R(F) = SIGMA\DELTAF\/SIGMA\F(o)\ = 0.0532 a
nd R(w) = 0.0516. Compounds with the light rare earth elements La, Ce,
Pr, Sm and Gd were found to be isotypic with NdFe1-xSb2.