Elaboration of lead-free Na0.5Bi0.5TiO3–BaTiO3 (NBT-BT) thick films by aerosol deposition method (ADM)

Marllory Isaza-Ruiz; Joseph Henon; Olivier Durand-Panteix; Gregory Etchegoyen; Fabrice Rossignol; Pascal Marchet

doi:10.1016/j.ceramint.2016.06.084

Elaboration of lead-free Na0.5Bi0.5TiO3–BaTiO3 (NBT-BT) thick films by aerosol deposition method (ADM)

Marllory Isaza-Ruiz ^{1, 2} Joseph Henon ¹ Olivier Durand-Panteix ³ Gregory Etchegoyen ³ Fabrice Rossignol ¹ Pascal Marchet ²

1 Axe 1 : procédés céramiques

SPCTS - Science des Procédés Céramiques et de Traitements de Surface

2 SPCTS-AXE3 - Axe 3 : organisation structurale multiéchelle des matériaux

SPCTS - Science des Procédés Céramiques et de Traitements de Surface

3 CTTC - Centre de Transfert de Technologies Céramiques

Abstract : Thick and dense ceramic films of lead-free 0.94 Na 0.5 Bi 0.5 TiO 3 – 0.06 BaTiO 3 (NBT-BT) composition were elaborated by aerosol deposition method (ADM) at room temperature. A powder of suitable grain size was elaborated by solid state reaction. Using this powder, two samples were elaborated by ADM respectively on glass and metallic substrates, in order to check for microstructure and electrical properties. This process allowed obtaining a thick film (3.2 µm) with dense microstructure. Measurement of electrical properties revealed a lossy dielectric behavior indicating interfacial phenomena at the electrode – film interface. The measurement of the ferroelectric hysteresis cycle does not show any characteristics of a ferroelectric behavior, but corresponds well to the one of a lossy non-linear dielectric. The absence of ferroelectricity is probably due to the low grain size of the obtained thick film (130 nm). Further experiments are in progress in order to try to obtain ferroelectric properties.

Keywords : Aerosol Deposition Method Lead-free perovskite materials Films Dielectric properties Functional applications

Type de document :

Article dans une revue

Ceramics International, Elsevier, 2016, 42 (13), pp.14635-14641. 〈10.1016/j.ceramint.2016.06.084〉

Domaine :

Chimie / Matériaux

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Elaboration of lead-free Na0.5Bi0.5TiO3–BaTiO3 (NBT-BT) thick films by aerosol deposition method (ADM)

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