Superconducting properties of thick films on Hastelloy prepared by the Aerosol Deposition Method with ex situ MgB2 powder

Title data

Kauffmann-Weiss, Sandra ; Häßler, Wolfgang ; Günther, Elisabeth ; Scheiter, Juliane ; Denneler, Stefan ; Glosse, Philipp ; Berthold, Thomas ; Oomen, Marijn ; Arndt, Tabea ; Stöcker, Thomas ; Hanft, Dominik ; Moos, Ralf ; Weiss, Moshe ; Weis, Frederik ; Holzapfel, Bernhard:
Superconducting properties of thick films on Hastelloy prepared by the Aerosol Deposition Method with ex situ MgB2 powder.
In: IEEE Transactions on Applied Superconductivity. Vol. 27 (2017) Issue 4 . - No. 6200904.
ISSN 1051-8223
DOI: https://doi.org/10.1109/TASC.2017.2669479

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Abstract in another language

We present a new high-deposition-rate coating technique that allows us to produce at room temperature long thick films of MgB2 on flexible steel substrates. Such a technique might give rise to new tapes with higher filling factors compared to the standard processed tapes. With the so-called aerosol deposition technique, MgB2 films were prepared on Hastelloy substrates with commercially available ex situ-prepared MgB2 powder (TC,onset of 38 K, JC of 3.8·10 3 A/cm2 at 4 K and 1 T). Microscopic analyses yield nanocrystalline dense films with high film stresses. The as-deposited films have so far a superconducting transition temperature TC0 of 18.1 K and a critical current density JC up to 5·103 A/cm2 at 4 K and self-field obtained.