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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Driessche, I. Van
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Publications (2/2 displayed)
- 2020Effect of oxygenation process on flux pinning in pristine and BaHfO<sub>3</sub> nanocomposite GdBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> superconducting thin filmscitations
- 2020Importance of the pyrolysis for microstructure and superconducting properties of CSD-grown GdBa$_{2}$Cu$_{3}$O$_{7-x}$-HfO$_{2}$ nanocomposite films by the ex-situ approachcitations
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article
Effect of oxygenation process on flux pinning in pristine and BaHfO<sub>3</sub> nanocomposite GdBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> superconducting thin films
Abstract
<jats:title>Abstract</jats:title><jats:p>Pristine and BaHfO<jats:sub>3</jats:sub> (BHO) nanocomposite GdBa<jats:sub>2</jats:sub>Cu<jats:sub>3</jats:sub>O<jats:sub>7</jats:sub> (GdBCO) superconducting thin films were deposited at 800 °C, 0.4 mbar O<jats:sub>2</jats:sub> partial pressure using a Nd:YAG laser (λ=355 nm) with 10 Hz frequency on MgO substrate. The influence of the oxygenation process on flux pinning and electrical transport properties was investigated by changing the annealing temperature (<jats:italic>T</jats:italic><jats:sub>ann</jats:sub>) between 450 °C and 780 °C and the holding time (<jats:italic>t</jats:italic><jats:sub>hold</jats:sub>) between 10 and 30 min. The irreversibility field shows the largest shift toward higher fields for <jats:italic>T</jats:italic><jats:sub>ann</jats:sub> = 450 °C and thus the largest in-field <jats:italic>J</jats:italic><jats:sub>c</jats:sub>. Angular dependence of <jats:italic>J</jats:italic><jats:sub>c</jats:sub> for most of the pristine GdBCO films exhibits a large peak for <jats:italic>B</jats:italic>‖<jats:italic>c</jats:italic>, however the sample with <jats:italic>T</jats:italic><jats:sub>ann</jats:sub> = 550 °C has a large peak in the 90°-120° region, i.e. near <jats:italic>B</jats:italic> ‖ <jats:italic>ab</jats:italic>. For BHO nanocomposites, a decrease in <jats:italic>T</jats:italic><jats:sub>ann</jats:sub> increases in-field <jats:italic>J</jats:italic><jats:sub>c</jats:sub> by a factor of 2.</jats:p>