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  1. No Access

    Chapter and Conference Paper

    OCT Segmentation via Deep Learning: A Review of Recent Work

    Optical coherence tomography (OCT) is an impo...

    M. Pekala, N. Joshi, T. Y. Alvin Liu… in Computer Vision – ACCV 2018 Workshops (2019)

  2. No Access

    Article

    Magnetic and Mössbauer studies of pure and Ti-doped YFeO 3 nanocrystalline particles prepared by mechanical milling and subsequent sintering

    Single-phased nanocrystalline particles of pure and 10 % Ti 4+-doped perovskite-related YFeO 3were prepared via mechanosynthesis at 450∘C. This temperature is ∼150–350 ∘C lower than those at which the materials, ...

    N. O. Khalifa, H. M. Widatallah, A. M. Gismelseed… in Hyperfine Interactions (2016)

  3. No Access

    Chapter and Conference Paper

    Structural and 57Fe Mössbauer study of EuCr1 − x Fe x O3 nanocrystalline particles

    A structural and Mössbauer study of mechanosynthesized EuCr1 − xFexO3 nanocrystalline particles (∼20–30 nm) is presented. The lattice parameters increase with increasing x-value leading to an increasingly distort...

    H. M. Widatallah, T. M. H. Al-Shahumi, A. M. Gismelseed, Z. Klencsár… in ICAME 2011 (2013)

  4. No Access

    Article

    Structural and 57Fe Mössbauer study of EuCr1 − x Fe x O3 nanocrystalline particles

    A structural and Mössbauer study of mechanosynthesized EuCr1 − xFexO3 nanocrystalline particles (∼20–30 nm) is presented. The lattice parameters increase with increasing x-value leading to an increasingly distort...

    H. M. Widatallah, T. M. H. Al-Shahumi, A. M. Gismelseed… in Hyperfine Interactions (2012)

  5. No Access

    Chapter and Conference Paper

    Spin-Dependent Tunnel Currents for Metals or Superconductors With Charge-Density Waves

    We suggest to extend the well-known method of Tedrow and Meservey to investigate spin polarization P in ferromagnets. Namely, metals and superconductors partially gapped by charge-density waves (CDWs) are propose...

    A. M. Gabovich, A. I. Voitenko, Mai Suan Li… in Physics of Spin in Solids: Materials, Meth… (2005)

  6. No Access

    Article

    Magnetic Characterization of La0.75-xGdxCa0.25MnO3 Manganites

    Polycrystalline La0.75-xGdxCa0.25MnO3 samples (x=0, 0.10, 0.25, 0.33, 0.50, and 0.75) were prepared by the carbonate precipitation method. For a comparison the nanocrystalline samples with the same compositions w...

    M. Pekala, V. Drozd, J. Kováč, I. Škorvánek in Czechoslovak Journal of Physics (2004)

  7. No Access

    Chapter and Conference Paper

    Synthesis and Magnetic Properties of Magnesium-Doped Li0.5Fe2.5O4 Nanocrystalline Particles

    The structure and magnetic properties of nanocrystalline Mg-doped-Li0.5Fe2.5O4 particles synthesised by the ball milling of polycrystalline sample prepared at 600°C have been examined. The magnetisation of the na...

    H. M. Widatallah, F. J. Berry, A. M. Gismelseed, C. Johnson… in Hyperfine Interactions (C) (2002)

  8. No Access

    Chapter

    Electronic Thermal Conductivity of Partially-Gapped CDW Superconductors

    Long ago it was theoretically shown that the electronic thermal conductivity κel of Bardeen-Cooper-Schrieffer (BCS) superconductors freezes out below superconducting critical temperature Tc [1, 2, 3]. On the cont...

    M. Ausloos, A. M. Gabovich, A. I. Voitenko, M. Pekala in New Trends in Superconductivity (2002)

  9. No Access

    Chapter

    Field Dependent Exponents of Superconducting Fluctuations

    The electrical resistivity of a quasi monocrystalline Bi 2 Sr 2 CaCu 2 O y sample ...

    M. Ausloos, M. Pekala in Supermaterials (2000)

  10. No Access

    Chapter

    Vortex Lattice Melting and Viscosity in Y0.6Dy0.4Ba2Cu3O7−X Superconductor Studied by Electrical Resistivity

    Among the scientific problems raised by High Critical Temperature (Tc) Superconductors (HTcS) extensive experimental research has clearly shown the complexity of these perovskite cuprate compounds both because of...

    M. Pekala, W. Gadomski, I. Nedkov, H. Bougrine… in Symmetry and Pairing in Superconductors (1999)

  11. No Access

    Chapter

    Fluctuation Contributions to the Transport Properties of Hg1.4 Ba2Ca2Cu3O8+δ and Bi2Sr1.8Ca1.2Cu2O8 Polycrystalline Superconductors

    After some discussion on the precision and originality of the measurement methods used in order to measure the electrical resistivity and simultaneously the thermopower and the thermal conductivity as a functi...

    H. Bougrine, S. Dorbolo, R. Cloots, M. Pekala in Symmetry and Pairing in Superconductors (1999)

  12. No Access

    Article

    Magnetotransport Studies of Bi-Based 2212 and 2223 High Critical Temperature Superconductors

    When a magnetic field is superimposed on a superconducting sample the electric and temperature gradients allow one to observe phenomena called excess electrical resistivity, excess thermoelectric power, Nernst...

    M. Ausloos, R. Cloots, M. Pekala in Journal of Superconductivity (1998)

  13. No Access

    Article

    Field dependence of the electrothermal conductivity of high-Tc superconductors

    The field dependence of the electrothermal conductivity P=S/ρ of high-Tc superconductors is calculated using a kinetic Boltzmann-like theory for either an s-wave or a d-wave gap parameter symmetry. The charge car...

    M. Houssa, R. Cloots, S. Stassen, M. Pekala, M. Ausloos in Czechoslovak Journal of Physics (1996)

  14. No Access

    Article

    Non-isovalent alkali metal “substitution” in YBa2Cu3O7−y granular ceramics

    The aim of this paper is to study the influence of non-isovalent “do**” in YBa2Cu3O7−y in particular on its synthesis conditions and on the resistive properties both with and without a magnetic field. We conce...

    R. Cloots, A. Rulmont, M. Pekala, J. Y. Laval… in Zeitschrift für Physik B Condensed Matter (1995)