title: Enhancement of the critical current density in FeO-coated MgB(2) thin films at high magnetic fields.
abstract: The effect of depositing FeO nanoparticles with a diameter of 10 nm onto the surface of MgB(2) thin films on the critical current density was studied in comparison with the case of uncoated MgB(2) thin films. We calculated the superconducting critical current densities (J(c)) from the magnetization hysteresis (M-H) curves for both sets of samples and found that the J(c) value of FeO-coated films is higher at all fields and temperatures than the J(c) value for uncoated films, and that it decreases to ~10(5) A/cm(2) at B = 1 T and T = 20 K and remains approximately constant at higher fields up to 7 T.
authors.affiliation: Institute of Electronic Engineering and Nanotechnologies "D.Ghitu" ASM, MD2028, Chisinau, Moldova.
authors.forename: Andrei E
authors.initials: AE
authors.lastname: Surdu
authors.forename: Hassan H
authors.initials: HH
authors.lastname: Hamdeh
authors.forename: I A
authors.initials: IA
authors.lastname: Al-Omari
authors.forename: David J
authors.initials: DJ
authors.lastname: Sellmyer
authors.forename: Alexei V
authors.initials: AV
authors.lastname: Socrovisciuc
authors.forename: Andrei A
authors.initials: AA
authors.lastname: Prepelita
authors.forename: Ezgi T
authors.initials: ET
authors.lastname: Koparan
authors.forename: Ekrem
authors.initials: E
authors.lastname: Yanmaz
authors.forename: Valery V
authors.initials: VV
authors.lastname: Ryazanov
authors.forename: Horst
authors.initials: H
authors.lastname: Hahn
authors.forename: Anatolie S
authors.initials: AS
authors.lastname: Sidorenko