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

Bambar Davaasuren; Enkhtsetseg Dashjav; Guido Kreiner; Horst Borrmann; Sven Ulf Weber; Klaus Dieter Becker; Fred Jochen Litterst; Rudiger Kniep

doi:10.1016/j.jssc.2015.01.019

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

Bambar Davaasuren, Enkhtsetseg Dashjav, Guido Kreiner, Horst Borrmann, Sven Ulf Weber, Klaus Dieter Becker, Fred Jochen Litterst, Rudiger Kniep

Physical Science and Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

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.

Original language	English (US)
Pages (from-to)	450-454
Number of pages	5
Journal	Journal of Solid State Chemistry
Volume	225
DOIs	https://doi.org/10.1016/j.jssc.2015.01.019
State	Published - May 2015

ASJC Scopus subject areas

Materials Chemistry
Ceramics and Composites
Physical and Theoretical Chemistry
Electronic, Optical and Magnetic Materials
Inorganic Chemistry
Condensed Matter Physics

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@article{da3902857d0543cfa12c04ddadcda800,

title = "Crystal structure and M{\"o}ssbauer studies of the isotypic Fe6-cluster compounds RE15[Fe8C25], RE=Dy, Ho",

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 M{\"o}ssbauer 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.",

author = "Bambar Davaasuren and Enkhtsetseg Dashjav and Guido Kreiner and Horst Borrmann and Weber, {Sven Ulf} and Becker, {Klaus Dieter} and Litterst, {Fred Jochen} and Rudiger Kniep",

note = "KAUST Repository Item: Exported on 2020-10-01",

year = "2015",

month = may,

doi = "10.1016/j.jssc.2015.01.019",

language = "English (US)",

volume = "225",

pages = "450--454",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Elsevier",

}

Crystal structure and Mössbauer studies of the isotypic Fe6-cluster compounds RE15[Fe8C25], RE=Dy, Ho. / Davaasuren, Bambar; Dashjav, Enkhtsetseg; Kreiner, Guido; Borrmann, Horst; Weber, Sven Ulf; Becker, Klaus Dieter; Litterst, Fred Jochen; Kniep, Rudiger.

In: Journal of Solid State Chemistry, Vol. 225, 05.2015, p. 450-454.

Research output: Contribution to journal › Article › peer-review

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

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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 -

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

Abstract

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