Journal of Materials Science

, Volume 46, Issue 17, pp 5621–5627 | Cite as

Piezoelectric BNT-BT0.11 thin films processed by sol–gel technique

  • Marin CerneaEmail author
  • Aurelian Catalin Galca
  • Marius Cristian Cioangher
  • Cristina Dragoi
  • Gelu Ioncea


0.89(Na0.5Bi0.5)TiO3–0.11BaTiO3, (BNT-BT0.11) thin film was fabricated by sol–gel/spin coating process, on platinized silicon wafer. Perovskite structure with random orientation of crystallites has been obtained at 700 °C. Piezoelectric activity of BNT-BT0.11 thin film was detected using piezoresponse force microscopy (PFM). Effective piezoelectric coefficient d33eff of such film, recorded at 5 V applied dc voltage, was ~29 pm/V, which is similar to other BNT-BTx thin films. The complex refractive index and dielectric function of BNT-BT0.11 thin films were also investigated. The high leakage current density significantly influences the dielectric, ferroelectric, and piezoelectric properties of the BNT-BT0.11 films.


BaTiO3 Dielectric Function Piezoelectric Property Morphotropic Phase Boundary Piezoresponse Force Microscopy 



We thank the Romanian National Program PNCDI II, Contract No. 72-153/2008, and the Romanian National Authority for Scientific Research (PN09-450101, Contract No. 45N/1.03.2009) for the financial support.


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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Marin Cernea
    • 1
    Email author
  • Aurelian Catalin Galca
    • 1
  • Marius Cristian Cioangher
    • 1
  • Cristina Dragoi
    • 1
  • Gelu Ioncea
    • 2
  1. 1.National Institute of Materials PhysicsBucharest-MagureleRomania
  2. 2.METAV-R&D S. A.BucharestRomania

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