Activation energy mediated band structure in strained multiferroic BiFeO3 thin films

Shao, Fei and Chen, Ji Kun and Chew, Khian Hooi and Zhao, Gao Lei and Ren, Zeng Yao and Liu, Peng Fei and Liu, Qi and Teng, Jiao and Xu, Xiao Guang and Miao, Jun and Jiang, Yong (2020) Activation energy mediated band structure in strained multiferroic BiFeO3 thin films. Ceramics International, 46 (5). pp. 6838-6846. ISSN 0272-8842, DOI

Full text not available from this repository.
Official URL:


Although improved magnetic and piezoelectric performances were discovered in BiFeO3 rhombohedral-tetragonal mixed-phase, the associated electronic conduction mechanisms are less investigated. In the present work, we systematically investigated the leakage current and dielectric response as a function of temperature, frequency and bias field for pure rhombohedral and rhombohedral-tetragonal mixed-phase BiFeO3 films grown by pulse laser deposition. The multiferroic properties are demonstrated from their polarization and magnetization hysteresis. Both current-voltage and dielectric relaxation measurements indicate a lower activation energy observed for the mixed-phase BiFeO3 as compared to the rhombohedral-phase one. The present work for the first time indicates the distinguished transport properties as governed by different electronic conduction mechanisms for BiFeO3 at various phases, and improves the understandings associated to the strain engineering related electrical properties. © 2019 Elsevier Ltd and Techna Group S.r.l.

Item Type: Article
Funders: National Key R & D Program of China (No. 2018YFB0704100), National Science Foundation of China (Nos. 11974042 , 11574027 , 51731003 , 61674013 , 51671019), National Basic Research Program of China (No. 2015CB921502), University of Malaya RU Grant (No. GPF041B-2018)
Uncontrolled Keywords: Mixed-phase BiFeO3; Leakage; Dielectric relaxation; Activation energy; Band structure
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 24 Jun 2020 02:49
Last Modified: 24 Jun 2020 02:49

Actions (login required)

View Item View Item