MgB₂ thin films fabricated on Fe tape and effects of annealing on their properties

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Figure captions

Fig. 1. XRD patterns of the non-annealed and annealed Nb/MgB2/B/Fe samples and Fe

substrate.

Fig. 2. Temperature dependence of the resistivities of the non-annealed and annealed

Nb/MgB2/B/Fe samples and Fe substrate.

Fig. 3. Magnetic-field dependence of the Jc’s of the non-annealed and annealed

Nb/MgB2/B/Fe samples.

Fig. 4. Cross-sectional BF-STEM images and EDS elemental mapping images (Nb, Mg, B,

O, and Fe) of (a) non-annealed and (b) 5-h-annealed Nb/MgB2/B/Fe samples.

Fig. 5. EDS line profiles of Nb, Mg, B, O, and Fe in (a) non-annealed and (b) 5-h-annealed

Nb/MgB2/B/Fe samples.

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