Low Dielectric Loss and Multiferroic Properties in Ferroelectric/Mutiferroic/Ferroelectric Sandwich Structured Thin Films

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ID: 19364
2019
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Abstract
Bismuth ferrite (BiFeO3) has proven to be promising for a wide variety of microelectric and magnetoelectric devices applications. In this work, a dense (Ba0.65Sr0.35)TiO3(BST)/(Bi0.875Nd0.125)FeO3(BNF)/BST trilayered thin film grown on Pt-coated Si (100) substrates was developed by the rf-sputtering. For comparison, single-layered BNF and BST were also prepared on the same substrates, respectively. The results show that the dielectric loses suppression in BST/BNF/BST trilayered thin films at room temperature but has enhanced ferromagnetic and ferroelectric properties. The remnant polarization (Pr) and coercive electronic field (Ec) were 5.51 μC/cm2 and 18.3 kV/cm, and the remnant magnetization (Mr) and coercive magnetic field (Hc) were 10.1 emu/cm3 and 351 Oe, respectively, for the trilayered film. We considered that the bismuth’s volatilization was limited by BST bottom layers making the Bi/Fe in good station, and the action of BST layer in the charge transfer between BNF thin film and electrode led to the quite low leakage current and enhanced multiferroic property. The origin of the mechanism of the highly enhanced dielectric constant and decreased loss tanδ was discussed.
Reference Key
wu2019lowcoatings Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wu, Zhi-Yong;Ma, Cai-Bin;
Journal coatings
Year 2019
DOI
DOI not found
URL
https://www.mdpi.com/2079-6412/9/8/502
Keywords Keywords not found

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