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Improved ferroelectric properties in multiferroic BiFeO3 thin films through La and Nb codoping

Journal Article


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Abstract


  • We report the significant improvement of the ferroelectric properties of BiFeO3 thin film through control of electrical leakage by Nb doping. A very large remanent electrical polarization value of 80 mu C/cm(2) was observed in Bi0.8La0.2Nb0.01Fe0.99O3 thin film on Pt/Ti/SiO2/Si substrate. The doping effect of Nb in reducing the movable charge density due to oxygen vacancies in BiFeO3 was confirmed by the dielectric measurements. A very small loss was observed in the Nb and La codoped BiFeO3 thin film. As well as the improvement in the ferroelectric properties, the magnetic moment was also enhanced due to the doping of La.

Publication Date


  • 2008

Citation


  • Cheng, Z., Wang, X., Dou, S. Xue., Kimura, H. & Ozawa, K. (2008). Improved ferroelectric properties in multiferroic BiFeO3 thin films through La and Nb codoping. Physical Review B: Condensed Matter and Materials Physics, 77 (9), 092101-1-092101-4.

Scopus Eid


  • 2-s2.0-41149113871

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1122&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/123

Has Global Citation Frequency


Start Page


  • 092101-1

End Page


  • 092101-4

Volume


  • 77

Issue


  • 9

Place Of Publication


  • United States

Abstract


  • We report the significant improvement of the ferroelectric properties of BiFeO3 thin film through control of electrical leakage by Nb doping. A very large remanent electrical polarization value of 80 mu C/cm(2) was observed in Bi0.8La0.2Nb0.01Fe0.99O3 thin film on Pt/Ti/SiO2/Si substrate. The doping effect of Nb in reducing the movable charge density due to oxygen vacancies in BiFeO3 was confirmed by the dielectric measurements. A very small loss was observed in the Nb and La codoped BiFeO3 thin film. As well as the improvement in the ferroelectric properties, the magnetic moment was also enhanced due to the doping of La.

Publication Date


  • 2008

Citation


  • Cheng, Z., Wang, X., Dou, S. Xue., Kimura, H. & Ozawa, K. (2008). Improved ferroelectric properties in multiferroic BiFeO3 thin films through La and Nb codoping. Physical Review B: Condensed Matter and Materials Physics, 77 (9), 092101-1-092101-4.

Scopus Eid


  • 2-s2.0-41149113871

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1122&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/123

Has Global Citation Frequency


Start Page


  • 092101-1

End Page


  • 092101-4

Volume


  • 77

Issue


  • 9

Place Of Publication


  • United States