Multiferroicity in Ion-Implanted Fe:Batio3 Film

BaTiO3 (BTO) film was prepared by pulsed laser deposition, and then the film was implanted with Fe ions at 5×1016 cm-2 dose. The Fe:BTO film shows simultaneously ferromagnetic order and ferroelectric order at room temperature. More important is, the temperature dependent magnetic measurements of the Fe:BTO film show a distinct change in magnetization at the ferroelectric Curie temperature, which indicates the coupling between the two order parameters. Our results demonstrate that Fe:BTO film is a kind of promising multiferroic material.