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Dielectric Properties Research On Bi1-xPbxFeO3

With combination of the both ferroelectric and ferromagnetic and mutural coupling properties, multiferroics attracts a lot of researcher¡¦s attentions. Among these very popular materials, such as REMnO (113 series, 125 series), BiFeO3 etc¡K , the BiFeO3 interests us the most for it manifests multiferroic effects above the room temperature. However, the pure BiFeO3 phase is very difficult to form and a serious lost of Bi creates complex grain boundaries that produces enormous electric leaking. In this study, Pb is doped into BiFeO3 in Bi sites and we hope this doping effect may increase the stability and the ferroelectricity of Bi1-xPbxFeO3.
It is found that the crystal structure is changed dramatically, because of the doping of Pb, from the rhombohedra structure of the parent pure BiFeO3 to the cubic structure of Bi0.85Pb0.15FeO3. By the Pb doping, the compounds exhibit free from impurity phases and the dielectric constants are enhanced qualitatively to the doping levels.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0822108-153613
Date22 August 2008
CreatorsChang, Chin-chien
ContributorsHung-Duen Yang, Shih-Jye Sun, Hsiung Chou, Ying-Chung Chen
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0822108-153613
Rightsnot_available, Copyright information available at source archive

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