Multiferroic behavior observed in highly orientated Mn-doped BaTiO3 thin films

Yuan-Hua Lin; Jiancong Yuan; Songyin Zhang; Yi Zhang; Jing Liu; Yao Wang; Ce-Wen Nan
July 2009
Applied Physics Letters;7/20/2009, Vol. 95 Issue 3, p033105
Academic Journal
Highly orientated Mn-doped BaTiO3 thin films have been prepared on Nb-doped SrTiO3 substrate by pulsed laser deposition. Structural and electrical studies indicate that pure and Mn-doped BaTiO3 thin films show single phase character and good ferroelectric performance. All of the Mn-doped BaTiO3 thin films show obvious room-temperature ferromagnetism and the magnetization increases with the growing concentration of doped Mn. A bound magnetic polaron model was proposed to understand the observed ferromagnetic behavior of resistive Mn-doped BaTiO3 thin films. Our results demonstrate that ferromagnetism can be induced in the ferroelectric BaTiO3 film, which makes it a promising single-phase multiferroic.


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