|Source:||(2011) Auch gedruckt erschienen: ISBN 978-3-86664-977-4|
Transition-metal oxides show a broad spectrum of fascinating physical effects. Among these, materials with multiferroic properties play a prominent role in basic research and technical application.
The present work deals with several multiferroic compounds and the origins of their polar orders. LiCuVO4 and the rare-earth manganites RMnO3 show a polar order due to a complex magnetic structure. By measurements of polarisation in external magnetic fields, the relation between magnetic and polar order in LiCuVO4 is analysed. Dielectric spectroscopy reveals a relaxation process as key to the magnetocapacitive effects in the rare-earth manganites. Magnetite, which shows relaxorferroelectricity, is a system where the polar order is connected to the charge order of the system.
|Institute:||Physics/ Materials Science|
|Faculty:||Faculty of Mathematics and Natural Sciences|
|Dewey Decimal Classification:||Physics|
|Advisor:||Loidl, Alois (Prof. Dr.)|
|Date of examination:||17.05.2011|
|Year of creation:||2011|
|Date of publication:||22.07.2011|