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Single-Crystal Structure and Electronic Conductivity of Melt Synthesized Fe-rich, near End-Member Ferro-Kinoshitalite

Title data

Daab, Matthias ; Loch, Patrick ; Milius, Wolfgang ; Schönauer-Kamin, Daniela ; Schubert, Michaela ; Wunder, Anja ; Moos, Ralf ; Wagner, Friedrich E. ; Breu, Josef:
Single-Crystal Structure and Electronic Conductivity of Melt Synthesized Fe-rich, near End-Member Ferro-Kinoshitalite.
In: Zeitschrift für anorganische und allgemeine Chemie. Vol. 643 (2017) Issue 21 . - pp. 1661-1667.
ISSN 1521-3749
DOI: https://doi.org/10.1002/zaac.201700265

Project information

Project title:
Project's official titleProject's id
No informationSFB 840

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

In an attempt to improve the electronic conductivity an FeII-rich brittle mica, a near end-member Ferro-Kinoshitalite (BaFe3Si2Al2O10F2) was synthesized via a melt approach. The structure is of 1M polytype [a = 5.4013(11) Å, b = 9.3659(19) Å, c = 9.987(2) Å, β = 100.52(3)°, C2/m] and the iron content clearly exceeds natural abundance levels. The crystal structure is discussed with respect to established limits of isomorphous substitution based on geometrical considerations and is compared to other iron-rich micas. It is evidenced that the limitation of octahedral FeII substitution in micas is not merely governed by the misfit of tetrahedral and octahedral sheets as indicated in the literature. The electronic conductivity of contacted single crystals (μS·cm–1) is comparable to the conductivity of Ferrous-Tainiolite and is unfortunately not enhanced by the increased iron content. It is determined by the valence state of Fe rather than by the total Fe content.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Organic Chemistry I > Chair Organic Chemistry I - Univ.-Prof. Dr. Rainer Schobert
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry I > Chair Anorganic Chemistry I - Univ.-Prof. Dr. Josef Breu
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Organic Chemistry I
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry I
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 15 Nov 2017 09:59
Last Modified: 15 Nov 2017 09:59
URI: https://eref.uni-bayreuth.de/id/eprint/40399