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Study of Film Growth Ferroelectricity on Bi0.9Pb0.1FeO3/SrRuO3/SrTiO3

BiFeO3, a material with coexistence of antiferromagnetic and ferroelectric phases at room temperature, has been expecting to be used on novel devices such as FeRAM and spintronics. In this research, it is found that the surface morphologies of SrTiO3 influence the subsequence growth of SrRuO3 and Pb-dopant BiFeO¬3 (PBFO) films. The domain structures are associated to various surface structure and different thickness of PBFO investigated by a piezoresponse force microscopy. The radial-polarization-like domains was found on the PBFO island structures, and the domain size and the remnant piezoresponse increases with the thickness increasing; in contrary, the shifting of the electric coercive field occurs in the thinner films.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0730112-194343
Date30 July 2012
CreatorsLiu, Kuei-Chia
ContributorsTai-Chun Han, Ying-Hao Chu, Yi-Chun Chen, Ya-Ping Chiu, Hsiung Chou
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageEnglish
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730112-194343
Rightsuser_define, Copyright information available at source archive

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