Ferroelectric and magnetic properties of Aurivillius Bim+1Ti3Fem−3O3m+3 thin films

Authors

Tingting Jia, National Institute for Materials Science
Hideo Kimura, National Institute for Materials Science
Zhenxiang Cheng, University of WollongongFollow
Hongyang Zhao, National Institute for Materials Science, Japan, Xinjiang University

RIS ID

102280

Publication Details

Jia, T., Kimura, H., Cheng, Z. & Zhao, H. (2015). Ferroelectric and magnetic properties of Aurivillius Bi_m+1Ti₃Fe_m−3O_3m+3 thin films. Journal of Vacuum Science and Technology Part A: International Journal Devoted to Vacuum, Surfaces, and Films, 33 (6), 060605-1-060605-6.

Abstract

Aurivillius Bi_m+1Ti₃Fe_m−3O_3m+3 (m = 4, 5, 6) thin films have been deposited by a pulsed laser deposition system. The x-ray diffraction patterns indicate the formation of orthorhombic phase. The remanent polarization (2P_r) of Bi_m+1Ti₃Fe_m−3O_3m+3 thin films is decreased with the m-number. Positive-up-negative-down measurements indicate the presence of ferroelectric (FE) polarization in as-obtained thin films. Piezoresponse force microscopy investigations confirm the existence of FE domains and the switchable polarization. Weak magnetic moment is detected in the Aurivillius films at room temperature. The present work suggests the possibility of Aurivillius Bi_m+1Ti₃Fe_m−3O_3m+3 (m = 4, 5, 6) materials as potential roomerature multiferroics.