Superconducting MgB2 thin films by pulsed laser deposition

Abstract

Growth of MgB2 thin films by pulsed laser deposition is examined under ex situ and in situ processing conditions. For the ex situ process, Boron films grown by PLD were annealed at 900 C with excess Mg. For the in situ process, different approaches involving ablation from a stoichiometric target under different growth conditions, as well as multilayer deposition involving interposed Mg layers were examined and analyzed. Magnetic measurements on ex situ processed films show TC of ~39 K, while the current best in situ films show a susceptibility transition at ~ 22 K.

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References in corpus (3)

• Boron Isotope Effect in Superconducting MgB${}_2$
• Superconductivity in Dense $Mg{B}_2$ Wires
• MgB2 superconducting thin films with a transition temperature of 39 Kelvin

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• Dramatic role of critical current anisotropy on flux avalanches in MgB2 films
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• High quality MgB2 thin films in-situ grown by dc magnetron sputtering
• A Directly Coupled Superconducting Quantum Interference Device Magnetometer Fabricated in Magnesium Diboride by Focused Ion Beam
• Optical emission investigation of laser-produced MgB2 plume expanding in an Ar buffer gas
• In situ annealing of superconducting MgB2 films prepared by pulsed laser deposition