TY  - JOUR
AU  - Davaasuren, Bambar
AU  - Dashjav, Enkhtsetseg
AU  - Kreiner, Guido
AU  - Borrmann, Horst
AU  - Weber, Sven-Ulf
AU  - Becker, Klaus-Dieter
AU  - Jochen Litterst, Fred
AU  - Kniep, Rüdiger
TI  - Crystal structure and Mössbauer studies of the isotypic Fe$_{6}$-cluster compounds RE$_{15}$[Fe$_{8}$C$_{25}$], RE=Dy, Ho
JO  - Journal of solid state chemistry
VL  - 225
SN  - 0022-4596
CY  - Orlando, Fla.
PB  - Academic Press
M1  - FZJ-2016-00299
SP  - 450 - 454
PY  - 2015
AB  - The carboferrates RE15[Fe8C25] (RE=Dy, Ho) were prepared from mixtures of the elements by arc-melting followed with subsequent annealing at 1373 K. The crystal structures were determined from single crystal X-ray diffraction data and revealed an isotypic relationship to Er15[Fe8C25] (hP48, P321). The main feature of the crystal structure is given by Fe6 cluster units characterized by covalent Fe–Fe bonding interactions. 57Fe Mössbauer spectra of Dy15[Fe8C25] were fitted by three subspectra with relative spectral weights of about 3:3:2 which is in general agreement with the crystal structure. Below 50 K, an onset of magnetic hyperfine fields at the three iron sites is observed which is supposed to be caused by dipolar fields arising from neighboring, slowly relaxing Dy magnetic moments.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000352828000063
DO  - DOI:10.1016/j.jssc.2015.01.019
UR  - https://juser.fz-juelich.de/record/280531
ER  -