{"id":{"repo_id":"bayreuth","oai_identifier":"oai:epub.uni-bayreuth.de:1762"},"canonical_url":"https://search.dev.ndltd.org/etd/bayreuth/oai:epub.uni-bayreuth.de:1762","repository":{"repo_id":"bayreuth","name":"Universität Bayreuth","base_url":"https://epub.uni-bayreuth.de/cgi/oai2"},"display":{"title":"Synthesis, Superstructure, Vacancy-Ordering of Intercalated Transition Metal Dichalcogenides","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_html":"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_has_math":false,"creators":["Ali, Sk Imran"],"institution":"Universität Bayreuth","degree_name":null,"degree_level":"thesis.doctoral","degree_discipline":null,"degree_department":null,"school":null,"contributors":["van Smaalen, Sander"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-10-28","date_published":"2014-10-28","updated_at":"2026-07-27T18:49:36Z","subjects":[],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://epub.uni-bayreuth.de/id/eprint/1762/","outbound_label":"Repository record","outbound_source":"source_url"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["van Smaalen, Sander"]},{"key":"dc:creator","label":"Author","values":["Ali, Sk Imran"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:publisher","label":"Institution","values":["Universität Bayreuth"]},{"key":"dc:type","label":"Dc Type","values":["doctoralThesis"]},{"key":"thesis:degree_level","label":"Degree Level","values":["thesis.doctoral"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Universität Bayreuth"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["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.","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."]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Synthesis, Superstructure, Vacancy-Ordering of Intercalated Transition Metal Dichalcogenides"]}]}],"canonical_facts":{"dc:contributor":["van Smaalen, Sander"],"dc:creator":["Ali, Sk Imran"],"dc:description.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.","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."],"dc:format.medium":["application/pdf"],"dc:publisher":["Universität Bayreuth"],"dc:title":["Synthesis, Superstructure, Vacancy-Ordering of Intercalated Transition Metal Dichalcogenides"],"dc:type":["doctoralThesis"],"thesis:degree_level":["thesis.doctoral"],"thesis:institution_name":["Universität Bayreuth"]},"updated_at":"2026-07-27T18:49:36Z"}