Department of Chemistry
Magnetic, ferroelectric and magnetoelectric coupling properties of Fe-implanted BaTiO3 films
BaTiO3 (BTO) nano-films were implanted with iron by means of ion-implantation. According to the results of X-ray diffraction (XRD) and Raman analysis, all the films are single-phase with tetragonal structure. Upon the increase of Fe dosage, on one hand, there is a decrease in c/a ratio of the unit cells. As the grain size and surface roughness of the Fe-implanted films decrease, the well crystallized film was obtained. Consequently, both decreasing of coercivity and boosting of magnetization were observed simultaneously. With the decline of the grain size and surface roughness during thermal treatment of the Fe-implanted films, there is an improvement of Fe distribution across the BTO matrix. Consequently, there is a decrease of coercivity and rise of magnetization. Upon the decrease of Fe dosage, on the other, there is a decline in magnetization, and a ferroelectric hysteresis loop is observed at a Fe dosage of 3.0 × 1014 cm- 2. Additionally, the dependence of capacitance on the applied magnetic field and its frequency were also monitored. © 2010 Elsevier B.V. All rights reserved.
Annealing, Barium titanate, Ferroelectric properties, Ferromagnetic properties, Implantation, Iron
Source Publication Title
Thin Solid Films
Ye, X. J., Z. Z. Zhou, W. Zhong, D. L. Hou, H. T. Cao, C. T. Au, and Y. W. Du. "Magnetic, ferroelectric and magnetoelectric coupling properties of Fe-implanted BaTiO3 films." Thin Solid Films 519.7 (2011): 2163-2167.