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Synthesis, Superstructure, Vacancy-Ordering of Intercalated Transition Metal Dichalcogenides

URN to cite this document: urn:nbn:de:bvb:703-epub-1762-8

Title data

Ali, Sk Imran:
Synthesis, Superstructure, Vacancy-Ordering of Intercalated Transition Metal Dichalcogenides.
Bayreuth , 2014 . - 2, VI, 110 P.
( Doctoral thesis, 2014 , University of Bayreuth, Faculty of Mathematics, Physics and Computer Sciences)

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Abstract

In this thesis, the synthesis and crystal structures are discussed of intercalated transition metal dichalcogenides (TMDCs) 6R-CuxTa1+yS2 and 2H-CuxTa1+ySe2, as well as the compound Cu3TaSe4. Synthesis of these compounds has been performed by the method of chemical vapor transport, using iodine as a transporting agent. X-ray diffraction may reveal superlattice reflections, which then indicates the existence of a superstructure. An eightfold superstructure has been found for 6R-CuxTa1+yS2 (x = 0.237, y = 0; x = 0.23, y = 0.06) and a fourfold superstructure has been found for 2H-Cu0:52TaSe2. 2H-Cu0:16Ta1:08Se2 and Cu3TaSe4 do not form any superstructure.

Abstract in another language

In dieser Arbeit wurden die Synthesen und Kristallstrukturen von Übergangsmetalldichalkogenide (engl.: Transition Metal Dichalcogenides, TMDCs) 6R-CuxTa1+yS2 and 2H-CuxTa1+ySe2, sowie von der Verbindung Cu3TaSe4 untersucht. Die Synthese dieser Verbindungen wurde mit Hilfe des chemischen Transports (engl.: chemical vapor transport, CVT) durchgef¨uhrt, wobei Jod als Transportmittel diente. Bei der Röntgenbeugung können Überstrukturreflexe auftreten, was auf die Existenz einer Überstruktur hinweist. Für 6R-CuxTa1+yS2 (x = 0.237, y = 0; x = 0.23, y = 0.06) wurde eine achtfache Überstruktur und für 2H-Cu0:52TaSe2 wurde eine vierfache Überstruktur gefunden. 2H-Cu0:16Ta1:08Se2 und Cu3TaSe4 bilden keine Überstrukturen.

Further data

Item Type: Doctoral thesis (No information)
Keywords: Synthesis; Chemical-vapor-transport method; X-ray study; Superstructure; Vacancy-ordering
DDC Subjects: 500 Science > 530 Physics
500 Science > 540 Chemistry
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography > Chair Crystallography - Univ.-Prof. Dr. Sander van Smaalen
Graduate Schools
Graduate Schools > University of Bayreuth Graduate School
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-1762-8
Date Deposited: 05 Nov 2014 07:26
Last Modified: 15 May 2015 08:40
URI: https://epub.uni-bayreuth.de/id/eprint/1762

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