Structural studies and magnetism of Dy6Ni2.43Sn0.5 stannide

L. Romaka; Kh. Miliyanchuk; V.V. Romaka; L. Havela; Y. Stadnyk

doi:10.15330/pcss.24.2.284-289

Authors

L. Romaka Ivan Franko National University of Lviv, Lviv, Ukraine
Kh. Miliyanchuk Ivan Franko National University of Lviv, Lviv, Ukraine
V.V. Romaka Institute for Solid State Research, IFW-Dresden, Dresden, Germany
L. Havela Charles University, Prague, Czech Republic
Y. Stadnyk Ivan Franko National University of Lviv, Lviv, Ukraine

DOI:

https://doi.org/10.15330/pcss.24.2.284-289

Keywords:

Intermetallics, Crystal structure, Magnetic properties, Heat capacity

Abstract

Intermetallic compound Dy₆Ni_2.43Sn_0.5was prepared by arc melting and annealing at 873 K. It was characterized by X-ray powder diffraction, differential thermal analysis, and electron probe microanalysis. The crystal structure of low temperature Dy₆Ni_2.43Sn_0.5 phase belongs to the orthorhombic Ho₆Co₂Ga structure type (space group Immm, a = 0.93116(1) nm, b = 0.94993(1) nm, c = 0.98947(1) nm). Crystal structure refinements showed the deviation from the ideal 6:2:1 stoichiometry corresponding to the formula Dy₆Ni_2.43Sn_0.5. It exhibits a sequence of magnetic phase transitions; antiferromagnetic ordering sets in at 60 K, while further order-order magnetic phase transitions take place at lower temperatures.

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