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Journal Articles Thin Solid Films Year : 2016

Manipulating the ferroelectric polarization state of BaTiO 3 thin films

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Abstract

Controlling the ferroelectric polarization at macroscopic or microscopic levels is crucial in the framework of the development of ferroelectric materials used in yet challenging photo-electrochemical (PEC) cells and spintronic applications. We report here on polarization methods allowing to electrically polarize prototypical samples of BaTiO 3 (001) films. Epitaxial single crystalline layers were grown up to a thickness of 25 nm by atomic oxygen assisted molecular beam epitaxy on 1 at.% Nb doped SrTiO 3 (001) single crystals. The samples were both microscopically and macroscopically polarized using Piezoresponse Force Microscopy and electrochemical poling in an electrolyte respectively. In addition we demonstrate the possibility to retrieve a quasi-native mixed ferroelectric polarization state after annealing. These polarization methods may be applied to many other ferroelectric thin films.
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Dates and versions

cea-01369284 , version 1 (20-09-2016)

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Sukanya Datta, Maxime Rioult, Dana Stanescu, Hélène Magnan, Antoine Barbier. Manipulating the ferroelectric polarization state of BaTiO 3 thin films. Thin Solid Films, 2016, 607, pp.7. ⟨10.1016/j.tsf.2016.03.059⟩. ⟨cea-01369284⟩
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