journal article·2012-03-28

A Method to Improve Electrical Properties of BiFeO3 Thin Films

Jiagang Wu, John Wang, Dingquan Xiao, Jianguo Zhu

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Abstract

A method is used to improve the electrical properties of BiFeO(3) thin films by modifying the Bi content in ceramic targets, where all thin films were prepared on SrRuO(3)/Pt/TiO(2)/SiO(2)/Si(100) substrates by radio frequency sputtering. The Bi content in the ceramic target strongly affects the electrical properties of BiFeO(3) thin films. BiFeO(3) thin films prepared by using the ceramic target of Bi/Fe ≈ 1.15 with a molar ratio demonstrate a low leakage current density and a low dielectric loss. Moreover, a larger remanent polarization of 2P(r) ≈ 167.6 μC/cm(2) is also demonstrated for the BiFeO(3) thin films prepared by using the ceramic target of Bi/Fe ≈ 1.15, together with an improved fatigue behavior. Therefore, it is an effective way to improve the electrical properties of bismuth ferrite thin films by modifying the Bi content in ceramic targets.
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Research context

OpenAlex topics: Multiferroics and related materials · Ferroelectric and Piezoelectric Materials · Magnetic and transport properties of perovskites and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science, Sichuan University, Chengdu 610064, P. R. China

Department of Materials Science and Engineering, National University of Singapore, Singapore 117574, Singapore

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