ETD Collection

Permanent URI for this collectionhttps://wiredspace.wits.ac.za/handle/10539/104


Please note: Digitised content is made available at the best possible quality range, taking into consideration file size and the condition of the original item. These restrictions may sometimes affect the quality of the final published item. For queries regarding content of ETD collection please contact IR specialists by email : IR specialists or Tel : 011 717 4652 / 1954

Follow the link below for important information about Electronic Theses and Dissertations (ETD)

Library Guide about ETD

Browse

Filters

20161

Settings

Author: search.filters.author.Ayele, Fekadu HailuSubject: search.filters.subject.Metal oxide semiconductors

Search Results

Now showing 1 - 1 of 1
  • No Thumbnail Available
    Item
    Determination of elastic constants of transition metal oxide based thin films using surface brillouin scattering
    (2016-09-19) Ayele, Fekadu Hailu
    Bismuth ferrite BiFeO3 is a transition metal oxide that exhibits both antiferromagnetic and ferroelectric orderings and is termed a magnetoelectric multiferroic. These functional properties make it crucial for applications in various nanoelectronic devices and sensors. However, the integration of BiFeO3 in devices requires the scaling down of bulk BiFeO3 to nano dimensional length scales in thin lm format. For this purpose, the elements of the elastic constant tensor of BiF eO3 thin lms are requisite, especially in multilayered or single layer-on-substrate device con gurations. It is thus essential that mechanical properties of BiFeO3 thin lms be established due to their size and growth mode dependence. Therefore, the study aims to determine the propagation of the surface acoustic waves and the elastic constants of BiFeO3 BFO thin lms in order to tailor the mechanical properties for device applications. In this approach the e ect of morphology and microstructure on the elastic constants has been investigated.