Table 1 Sample heat treatment schedules, magnetic onsets and critical current densities at 4.2 K at both 0.5 and 10 T.
From: Effect of heat treatments on superconducting properties and connectivity in K-doped BaFe2As2
Sample ID | 1st HT temp (°C) | 1st HT time (h) | 2nd HT temp (°C) | 2nd HT time (h) | Tc,mag (K) | Jc(0.5 T,4.2 K) (A/cm2) | Jc(10 T,4.2 K) (A/cm2) | |
|---|---|---|---|---|---|---|---|---|
Varying 1st HT temperature | 600/600 | 600 | 20 | 600 | 10 | 33.8 | 1.07 × 105 | 1.08 × 104 |
675/600 | 675 | 34.5 | 1.40 × 105 | 1.25 × 104 | ||||
750/600 | 750 | 34.4 | 1.84 × 105 | 1.61 × 104 | ||||
825/600 | 825 | 34.3 | 1.16 × 105 | 1.15 × 104 | ||||
Varying 2nd HT temperature | 750/600 | 750 | 20 | 600 | 10 | 34.4 | 1.84 × 105 | 1.61 × 104 |
750/675 | 675 | 35.6 | 0.82 × 105 | 0.59 × 104 | ||||
750/750 | 750 | 35.2 | 0.61 × 105 | 0.33 × 104 |
