Crystal structure and Mössbauer studies of the isotypic Fe6-cluster compounds RE15[Fe8C25], RE=Dy, Ho

Handle URI:
http://hdl.handle.net/10754/564156
Title:
Crystal structure and Mössbauer studies of the isotypic Fe6-cluster compounds RE15[Fe8C25], RE=Dy, Ho
Authors:
Davaasuren, Bambar ( 0000-0002-0270-3426 ) ; Dashjav, Enkhtsetseg; Kreiner, Guido; Borrmann, Horst; Weber, Sven Ulf; Becker, Klaus Dieter; Litterst, Fred Jochen; Kniep, Rudiger
Abstract:
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.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Chemical Science Program
Publisher:
Elsevier BV
Journal:
Journal of Solid State Chemistry
Issue Date:
May-2015
DOI:
10.1016/j.jssc.2015.01.019
Type:
Article
ISSN:
00224596
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Chemical Science Program

Full metadata record

DC FieldValue Language
dc.contributor.authorDavaasuren, Bambaren
dc.contributor.authorDashjav, Enkhtsetsegen
dc.contributor.authorKreiner, Guidoen
dc.contributor.authorBorrmann, Horsten
dc.contributor.authorWeber, Sven Ulfen
dc.contributor.authorBecker, Klaus Dieteren
dc.contributor.authorLitterst, Fred Jochenen
dc.contributor.authorKniep, Rudigeren
dc.date.accessioned2015-08-03T12:34:25Zen
dc.date.available2015-08-03T12:34:25Zen
dc.date.issued2015-05en
dc.identifier.issn00224596en
dc.identifier.doi10.1016/j.jssc.2015.01.019en
dc.identifier.urihttp://hdl.handle.net/10754/564156en
dc.description.abstractThe 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.en
dc.publisherElsevier BVen
dc.subjectCarboferrateen
dc.subjectCarboligandsen
dc.subjectMagnetic Fe6 clustersen
dc.subjectMössbauer spectroscopyen
dc.titleCrystal structure and Mössbauer studies of the isotypic Fe6-cluster compounds RE15[Fe8C25], RE=Dy, Hoen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical Science Programen
dc.identifier.journalJournal of Solid State Chemistryen
dc.contributor.institutionMax Planck Institute for Chemical Physics of Solids, Nöthnitzer Str. 40Dresden, Germanyen
dc.contributor.institutionBraunschweig University of Technology, Institute of Physical and Theoretical Chemistry, Hans-Sommer Str. 10Braunschweig, Germanyen
dc.contributor.institutionBraunschweig University of Technology, Institute for Physics of Condensed Matter, Mendelssohn Str. 3Braunschweig, Germanyen
kaust.authorDavaasuren, Bambaren
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