Magnetic, ferroelectric and magnetoelectric coupling properties of Fe-implanted BaTiO3 films

X. J. Ye, Z. Z. Zhou, W. Zhong, D. L. Hou, H. T. Cao, Chak Tong AU, Y. W. Du

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)2163-2167
Number of pages5
JournalThin Solid Films
Volume519
Issue number7
DOIs
Publication statusPublished - 31 Jan 2011

Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

User-Defined Keywords

  • Annealing
  • Barium titanate
  • Ferroelectric properties
  • Ferromagnetic properties
  • Implantation
  • Iron

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