<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>An undoped BiFeO3 thin film, Gd doped Bi0.95Gd0.05FeO3 thin film with a constant composition, Gd up-graded doped Bi1−x
                        GdxFeO3 and Gd down-graded doped Bi1−x
                        GdxFeO3 thin films were successfully grown on Pt (111)/Ti/SiO2/Si (100) substrates using a sol-gel and spin coating technique. The crystal structure, ferroelectric and dielectric characteristics as well as the leakage currents of these samples were thoroughly investigated. The XRD (X-Ray Diffraction) patterns indicate that all these thin films consist of solely perovskite phase with polycrystalline structure. No other secondary phases have been detected. Clear polarization-electric field (P-E) hysteresis loops of all these thin films demonstrate that the incorporation of Gd3+ into the Bi site of BFO thin film have enhanced the ferroelectric performance of pure BiFeO3 thin film, and the Gd down-graded doped Bi1−x
                        GdxFeO3 thin film has the best ferroelectric properties. Compared to other thin films, the optimal ferroelectric behavior of the Gd down-graded doped Bi1−x
                        GdxFeO3 thin film results from its large dielectric constant, low dissipation factor and low leakage current.</p></abstract>

An undoped BiFeO3 thin film, Gd doped Bi0.95Gd0.05FeO3 thin film with a constant composition, Gd up-graded doped Bi1−x
                        GdxFeO3 and Gd down-graded doped Bi1−x
                        GdxFeO3 thin films were successfully grown on Pt (111)/Ti/SiO2/Si (100) substrates using a sol-gel and spin coating technique. The crystal structure, ferroelectric and dielectric characteristics as well as the leakage currents of these samples were thoroughly investigated. The XRD (X-Ray Diffraction) patterns indicate that all these thin films consist of solely perovskite phase with polycrystalline structure. No other secondary phases have been detected. Clear polarization-electric field (P-E) hysteresis loops of all these thin films demonstrate that the incorporation of Gd3+ into the Bi site of BFO thin film have enhanced the ferroelectric performance of pure BiFeO3 thin film, and the Gd down-graded doped Bi1−x
                        GdxFeO3 thin film has the best ferroelectric properties. Compared to other thin films, the optimal ferroelectric behavior of the Gd down-graded doped Bi1−x
                        GdxFeO3 thin film results from its large dielectric constant, low dissipation factor and low leakage current.

Fabrication and characterization of compositionally graded Bi1−x
                     GdxFeO3 thin films

College of Materials Science and Engineering, Nanjing University of Technology, No. 5 Xinmofan Road, Nanjing, 210009, China

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

An undoped BiFeO3 thin film, Gd doped Bi0.95Gd0.05FeO3 thin film with a constant composition, Gd up-graded doped Bi1−x
                        GdxFeO3 and Gd...

Fabrication and characterization of compositionally graded Bi1−x GdxFeO3 thin films

Published Online: Oct 17, 2014

Page range: 498 - 502

DOI: https://doi.org/10.2478/s13536-014-0213-1

Keywords
Gd substituted BiFeO3 thin films, crystal structure, ferroelectric properties, sol-gel technique

© 2014 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fabrication and characterization of compositionally graded Bi1−x GdxFeO3 thin films

Published Online: Oct 17, 2014

Page range: 498 - 502

DOI: https://doi.org/10.2478/s13536-014-0213-1

KeywordsGd substituted BiFeO3 thin films, crystal structure, ferroelectric properties, sol-gel technique

© 2014 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Gd substituted BiFeO3 thin films, crystal structure, ferroelectric properties, sol-gel technique