TY - JOUR
T1 - Crystal structure and Mössbauer studies of the isotypic Fe6-cluster compounds RE15[Fe8C25], RE=Dy, Ho
AU - Davaasuren, Bambar
AU - Dashjav, Enkhtsetseg
AU - Kreiner, Guido
AU - Borrmann, Horst
AU - Weber, Sven Ulf
AU - Becker, Klaus Dieter
AU - Litterst, Fred Jochen
AU - Kniep, Rudiger
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2015/5
Y1 - 2015/5
N2 - 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.
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.
UR - http://hdl.handle.net/10754/564156
UR - https://linkinghub.elsevier.com/retrieve/pii/S0022459615000274
UR - http://www.scopus.com/inward/record.url?scp=84923172403&partnerID=8YFLogxK
U2 - 10.1016/j.jssc.2015.01.019
DO - 10.1016/j.jssc.2015.01.019
M3 - Article
VL - 225
SP - 450
EP - 454
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
SN - 0022-4596
ER -