Can I read Magnesium-rich Intermetallics RE~3~RuMg~7~ (RE=Y, Nd, Dy, Ho) – Rows of Condensed Ru@RE~6/2~ Octahedra in Magnesium Matrices on EtoBox?

Magnesium-rich Intermetallics RE~3~RuMg~7~ (RE=Y, Nd, Dy, Ho) – Rows of Condensed Ru@RE~6/2~ Octahedra in Magnesium Matrices by Marcel Kersting; Ute Ch. Rodewald; Christian Schwickert; Rainer Pöttgen is a Chemistry article available to read on EtoBox.

What is Magnesium-rich Intermetallics RE~3~RuMg~7~ (RE=Y, Nd, Dy, Ho) – Rows of Condensed Ru@RE~6/2~ Octahedra in Magnesium Matrices about?

The magnesium-rich intermetallic phases RE~3~RuMg~7~ (RE=Y, Nd, Dy, Ho) have been synthesized from the elements in sealed niobium ampoules and subsequently characterized by powder X-ray diffraction. The structure of the dysprosium compound was refined on the basis of single-crystal X-ray diffractometer data: Ti~6~Sn~5~ type, P6~3~=mmc, a=1019.1(2), c=606.76(9) pm, wR2=0.0159, 439 F~2~ values, 19 variables. The Mg3 site shows a small degree of Mg3=Dy mixing, leading to the composition Dy~3:03~RuMg~6:97~ for the investigated crystal. The striking structural motifs in the Dy~3~RuMg~7~ structure are rows of face-sharing Ru@Dy~6~ octahedra and corner-sharing Mg2@Mg~8~Dy~4~ icosahedra. The rows of octahedra form a hexagonal rod-packing, and each rod is enrolled by six rows of the condensed icosahedra. Temperature-dependent magnetic susceptibility measurements of Dy~3~RuMg~7~ show Curie-Weiss behavior with an experimental magnetic moment of 10.66(1) μ~B~ per Dy atom. Antiferromagnetic ordering is detected at T~N~ =27.5(5) K. The 5 K isotherm shows a metamagnetic transition at a critical field of H~C~ =40 kOe

Who reads Magnesium-rich Intermetallics RE~3~RuMg~7~ (RE=Y, Nd, Dy, Ho) – Rows of Condensed Ru@RE~6/2~ Octahedra in Magnesium Matrices?

Author

Marcel Kersting; Ute Ch. Rodewald; Christian Schwickert; Rainer Pöttgen

Publisher

Walter de Gruyter GmbH

Published

2013

Language

EN

Field

Chemistry (Physical Sciences)