Ferroelectric properties and leakage current characteristics of Bi3.25La0.75Ti3O12 thin films prepared by the polymeric precursor method

Simões, A. Z.; Ramírez, M. A.; Riccardi, C. S.; Longo, E.; Varela, J. A.
December 2005
Journal of Applied Physics;12/1/2005, Vol. 98 Issue 11, p114103
Academic Journal
The ferroelectric properties and leakage current mechanisms of preferred oriented Bi3.25La0.75Ti3O12 (BLT) thin films deposited on La0.5Sr0.5CoO3 by the polymeric precursor method were investigated. These films showed excellent ferroelectric properties in terms of large remnant polarization (2Pr) of 47.6 μC/cm2 and (2Ec) of 55 kV/cm, fatigue-free characteristics up to 1010 switching cycles, and a current density of 0.7 μA/cm2 at 10 kV/cm. X-ray diffraction and scanning electron microscope investigations indicate that the deposited films exhibit a dense, well-crystallized microstructure having random orientations and with a rather smooth surface morphology. The improved ferroelectric and leakage current characteristics can be ascribed to the platelike grains of the BLT films, which make the domain walls easier to be switched under external field.


Related Articles

  • Influence of Dy-doping on ferroelectric and dielectric properties in BiDyFeO ceramics. Yubin Li; Jun Yu; Jianjun Li; Chaodan Zheng; Yunyi Wu; Yuan Zhao; Meng Wang; Yunbo Wang // Journal of Materials Science: Materials in Electronics;Apr2011, Vol. 22 Issue 4, p323 

    BiDyFeO (BDFO) (x = 0−0.2) ceramics were synthesized by solid-state reaction method. The influence of Dy dopant on crystal structural, dielectric and ferroelectric properties was investigated. The lattice parameter and the Curie temperature of BDFO were degraded continuously with...

  • Ultrahigh vacuum scanning electron microscope system combined with wide-movable scanning tunneling microscope. Kaneko, A.; Homma, Y.; Hibino, H.; Ogino, T. // Review of Scientific Instruments;Aug2005, Vol. 76 Issue 8, p083709 

    A surface analysis system has been newly developed with combination of ultrahigh vacuum scanning electron microscope (SEM) and wide-movable scanning tunneling microscope (STM). The basic performance is experimentally demonstrated. These SEM and STM images are clear enough to obtain details of...

  • Estimation of SEM Imaging Resolution of the Domain Structure of Pyroprobe-Heated Ferroelectrics. Sogr, A. A.; Maslovskaya, A. G. // Technical Physics;Nov2004, Vol. 49 Issue 11, p1505 

    The specific contrast of scanning electron microscope (SEM) images of ferroelectric domains observed in the pyrocurrent (pyroprobe) mode is analyzed. Calculations taking into account both the nonuniform heating of domains and the heat diffusion via the domain walls and the crystal boundaries are...

  • Microstructure, dielectric properties and diffuse phase transition of barium stannate titanate ceramics. Wei Cai; Yize Fan; Jiacheng Gao; Chunlin Fu; Xiaoling Deng // Journal of Materials Science: Materials in Electronics;Mar2011, Vol. 22 Issue 3, p265 

    BaSnTiO (short for BTS) ceramics are prepared via the conventional solid state reaction method. The microstructures, diffuse phase transiton, dielectric and ferroelectric properties of BTS ceramics were investigated. These results indicate that Sn ions have entered the unit cell maintaining the...

  • Grain-size effects on the structural, electrical properties and ferroelectric behaviour of barium titanate-based glass-ceramic nano-composite. Al-Assiri, M.; El-Desoky, M. // Journal of Materials Science: Materials in Electronics;Feb2013, Vol. 24 Issue 2, p784 

    Grain-size effects on the structural and electrical properties as well as ferroelectric behaviour of 10BaTiO-70VO-20BiO glass-ceramic nano-composite have been studied by scanning electron micrographs (SEM), X-ray diffraction (XRD), differential scanning calorimeter (DSC), dc conductivity (σ)...

  • Nanostructure and Properties of a Shinbone. Chen, B.; Luo, J.; Yuan, Q. // Journal of Superconductivity & Novel Magnetism;Aug2010, Vol. 23 Issue 6, p941 

    Scanning electron microscope (SEM) observation shows that a shinbone is composed of large-volume-fraction hydroxyapatite and small-volume-fraction collagen protein materials. The hydroxyapatite is of laminated structure and consists of numberless hydroxyapatite sheets. The observation also shows...

  • Studies on electrosynthesized zinc mercury selenide alloys. Hosun Moon; Kathalingam, A.; Mahalingam, Thaiyan; Chu, J. P.; Yong Deak Kim // Journal of Materials Science: Materials in Electronics;Oct2007, Vol. 18 Issue 10, p1013 

    Zn1- x Hg x Se ternary alloy thin films with x ranging from 0.14 to 0.5 have been deposited on conducting glass substrates by electrodeposition from aqueous bath containing ZnSO4, HgCl2 and SeO2 at bath temperatures from 30 °C to 80 °C. The influence of deposition parameters on the...

  • Biaxial stress dependence of the electrostimulated near-band-gap spectrum of GaN epitaxial film grown on (0001) sapphire substrate. Wan, Keshu; Porporati, Alessandro Alan; Feng, Gan; Yang, Hui; Pezzotti, Giuseppe // Applied Physics Letters;6/19/2006, Vol. 88 Issue 25, p251910 

    The biaxial piezospectroscopic coefficient (i.e., the rate of spectral shift with stress) of the electrostimulated near-band-gap luminescence of gallium nitride (GaN) was determined as Π=-25.8±0.2 meV/GPa. A controlled biaxial stress field was applied on a hexagonal GaN film, epitaxially...

  • Analysis of polarization switching in ferroelectric crystals in the injection mode. Maslovskaya, A. G.; Kopylova, I. B. // Journal of Experimental & Theoretical Physics;Jul2009, Vol. 109 Issue 1, p90 

    We report on the results of experiments on polarization switching in a ferroelectric TGS crystal during injection of electron beams from a scanning electron microscope under a surface layer. A series of models reflecting the polarization switching dynamics of a ferroelectric crystal under the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics