Skip to main content

7 Result(s)

within M. Pereira Remove this filter Optical and Electronic Materials Remove this filter

and

  1. No Access

    Article

    Synthesis and characterization of microporous carbon matrix enriched by MnO2 nanoparticles

    Nanocomposites (RF/MnO2) based on resorcinol–formaldehyde (RF) as carbon matrix and manganese oxide nanoparticles (MnO2) as incorporated material were elaborated by a sol–gel method. The effect of pyrolysis tempe...

    W. Ahmed, H. Jeidi, I. Najeh, H. Dahman… in Journal of Materials Science: Materials in… (2022)

  2. No Access

    Article

    Ferroelectric phase transitions studies in 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 ceramics

    The ferroelectric phase transitions in 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 (BCZT 50/50) ceramics, fabricated by a solid state reaction, were studied by using X-Ray diffraction, Raman spectroscopy, and measuri...

    J. P. B. Silva, E. C. Queirós, P. B. Tavares, K. C. Sekhar… in Journal of Electroceramics (2015)

  3. No Access

    Article

    Ba0.8Sr0.2TiO3 films crystallized on glass and platinized substrates by laser-assisted annealing at room temperature

    In this work, Ba0.8Sr0.2TiO3 (BST) films were grown by pulse laser ablation on bare glass and platinized substrates. The crystalline phase was obtained with the help of laser-assisted annealing (LAA) at room temp...

    J. P. B. Silva, A. Khodorov, A. Almeida, J. Agostinho Moreira… in Applied Physics A (2014)

  4. No Access

    Article

    Effect of bi-layer ratio in ZnO/Al2O3 multilayers on microstructure and functional properties of ZnO nanocrystals embedded in Al2O3 matrix

    Zinc oxide (ZnO) nanocrystals (NCs) embedded in alumina (Al2O3) matrix were produced via rapid thermal annealing (RTA) of pulsed laser deposited ZnO/Al2O3 multilayered nanostructures. The effect of the thickness ...

    K. C. Sekhar, S. Levichev, M. Buljan, S. Bernstorff, Koppole Kamakshi… in Applied Physics A (2014)

  5. No Access

    Article

    Ferroelectric properties of pulsed laser deposited PZT (92/8) thin films

    The effect of pulse amplitude on the ferroelectric and switching properties of pulsed laser deposited PZT (92/8) thin films has been studied. The structural analysis revealed that the films had a well crystall...

    J. P. B. Silva, S. A. S. Rodrigues… in Journal of Materials Science: Materials in… (2013)

  6. No Access

    Article

    Influence of laser repetition rate on ferroelectric properties of pulsed laser deposited BaTiO3 films on platinized silicon substrate

    BaTiO3 thin films were deposited by pulsed laser deposition on Pt–Si at different laser pulse repetition frequencies. X-ray diffraction spectra show that preferred oriented films can be grown by adjusting the pul...

    J. P. B. Silva, K. C. Sekhar, A. Almeida, J. Agostinho Moreira… in Applied Physics A (2013)

  7. No Access

    Article

    Effects of oxygen partial pressure on the ferroelectric properties of pulsed laser deposited Ba0.8Sr0.2TiO3 thin films

    The Ba0.8Sr0.2TiO3 thin films were grown on the Pt–Si substrate at 700 °C by using a pulsed laser deposition technique at different oxygen partial pressure (PO2) in the range of 1–20 Pa and their properties were ...

    J. P. B. Silva, K. C. Sekhar, A. Almeida, J. Agostinho Moreira… in Applied Physics A (2013)