Abstract
dc:description.abstractThe present work reports on the behaviors of temperature-dependent magnetic order of the transition-metal oxychlorides MOCl (M = Ti, Cr, Fe); further studies were performed on scandium-doped TiOCl and sodium-intercalated TiOCl. Single crystals of MOCl were grown by the chemical vapor phase transport method. At ambient condition, all compounds MOCl are isostructural with the orthorhombic space group Pmmn. They have a layered structure with each of the MOCl slabs containing a double MO layer sandwiched between Cl layers on each side. The slabs of MOCl are stacked along the lattice direction c and separated by van der Waals gaps. Within the MO layers, electrons on neighboring M atoms in a chain along b interact via direct exchange; moreover, interactions of the electrons may also exist between M atoms on neighboring chains by direct exchange, as well as by M-O-M superexchange. The different magnetic behaviors of MOCl are related to the different numbers of 3d electrons of M3+.
Degree
thesis:*- Level thesis:degree_level
- thesis.doctoral
- Grantor dc:publisher
- Universität Bayreuth
- Year
- 2014
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Zhang, Jian
- Contributors dc:contributor
-
- van Smaalen, Sander
Identifiers
dc:identifier.*- Repository record source_url
- https://epub.uni-bayreuth.de/id/eprint/1754/
- OAI identifier oai:identifier
- oai:epub.uni-bayreuth.de:1754