Skip to main content
. 2023 Nov 30;16(23):7468. doi: 10.3390/ma16237468

Table 2.

Upper critical field and irreversibility field for 5 nm and 50 nm NbN with and without an AlN buffer layer.

d (nm) AlN Buffer μ0Hc2 (T) μ0Hirr (T)
5 Yes 14.70 ± 0.123 * 14.00 ± 0.091 *
5 No 12.61 ± 0.078 * 8.89 ± 0.078 *
50 Yes 59.19 ± 0.411 ** 58.41 ± 0.459 **
50 No 25.13 ± 0.242 ** 20.74 ± 0.223 **

* Fitting parameters for 5 nm NbN are a = 1.2, b = 0.6 for Hc2 and a = 1.2, b = 1.3 for Hirr; ** Fitting parameters for 50 nm NbN are a = 1.2, b = 0.85 for Hc2 and a = 1.85, b = 1.03 for Hirr.