Oksana I. Bodak

Isothermal section of the NdFeSi system at 870 K

Phase equilibria in the ternary NdFeSi system have been established in the isothermal section of 870 K. Four ternary iron silicides of neodymium have been observed. The crystal structure of the ∼NdFeSi3 compound has not been solved yet.

Magnetic and electrical properties of RCu5.1In6.9 compounds

Abstract Magnetic and electrical properties of the RCu 5.1 In 6.9 compounds with R=Y, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho and Er were investigated in the temperature range 4.2–300 K. Additionally, for the compounds of Gd, Tb and Dy exhibiting magnetic anomalies at low temperatures, the magnetization versus magnetic field up to 14 T was measured at 4.2 K. Investigated compounds follow the Curie–Weiss law with relatively small values of the paramagnetic Curie temperature and the values of effective magnetic moment being in fair agreement with the values for the free ions. The electrical resistivity exhibits metallic character. The results are discussed in terms of the differences and similarities with other rare earth intermetallics.

Crystal structure of Zr9Co7In14

Abstract Zr9Co7In14 crystallizes in the cubic system, space group Fm3m, a = 13.300(2) A Z = 2, R = 0.0412 for 567 unique reflection (KM-4 diffractometer, Mo Kα radiation). The crystal structure, related to the Cr24C6 -type structure, can be described as a stacking of columns of cubes, tetragonal antiprisms, and cubo-octahedrons extending along the coordinate axes. One of the ln atoms is coordinated by a Frank-Kasper polyhedron.

Crystal structure of a new ternary indide, Zr4Co2In5

Abstract The crystal structure of Zr 4 Co 2 In 5 has been solved by the single-crystal X-ray analysis (KM-4 automatic diffractometer, Mo Kα radiation). The compound Zr 4 Co 2 In 5 represents a new type of crystal structure of intermetallic alloys: space group P 2/ m . a = 7.451(1) A , b = 3.286(2) A , c = 9.046(2) A , β = 94.53(2)°, V = 220.8(2) A 3 , Z = 1, R 1 = 0.0248 for 1507 independent reflections. Coordination numbers for zirconium atoms are 14 and 15, and for indium atoms are 10 and 12. Trigonal prisms with three additional atoms are characteristic of cobalt atoms (coordination number 9). The columns of pentagonal prisms, centred by zirconium atoms, and empty trigonal prisms can be distinguished in the structure of Zr 4 Co 2 In 5 . This structure can be described as the packing of the fragments of CsCl-, AlB 2 - and defective CaCu 6 -type structures.