Pr and Gd co-doped bismuth ferrite thin films with enhanced multiferroic properties

Bulletin of materials science

Chang Chun Chen¹  Yi Lin Yan¹  Zi Xuan Liu¹  Gui Wang¹ 

[1] College of Materials Science and Engineering, Nanjing University of Technology, No. 5 Xinmofan Road, Nanjing 210009, China$$College of Materials Science and Engineering, Nanjing University of Technology, No. 5 Xinmofan Road, Nanjing 210009, ChinaCollege of Materials Science and Engineering, Nanjing University of Technology, No. 5 Xinmofan Road, Nanjing 210009, China$$

关键词: Pr and Gd co-modified BiFeO3 thin film;    ferroelectric properties;    sol-gel.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Pr and Gd co-modified Bi_{0.95−ð�?��?}Pr_ð‘�?Gd_0.05FeO₃ (ð‘�? = 0.00, 0.05, 0.10) (BPGFO) thin films on Pt(111)/Ti/SiO₂/Si(100) substrates were prepared by a sol-gel together with spin coating technique. A detailed study of electrical and magnetic properties of these thin films is reported. X-ray diffraction analysis shows that, with an increase in Pr content, the crystal structures of BPGFO thin films retain rhombohedral (R3c) symmetry accompanied by structure distortion. Polarization-electric field hysteresis loops of these thin films demonstrate that the incorporation of Pr and Gd into the Bi site of BiFeO₃ thin film could enhance the ferroelectric performance. Compared to other thin films, the optimal ferroelectric behaviours in Bi_0.85Pr_0.1Gd_0.05FeO₃ thin film are ascribed to its large dielectric constant, low dissipation factor and low leakage current density. Room temperature magnetization-magnetic field curves of these thin films indicate that all the samples are of paramagnetic behaviours and the enhanced saturation magnetic properties can be found.

【 授权许可】

Unknown