Table 1.

Critical temperatures $T_{\text{c}},$ slopes of the upper critical fields ${\left(d{H}_{\text{c}2}/dT\right)}_{T=T_{\text{c}}},$ and upper critical fields at zero temperature ${\mu }_0{H}_{\text{c}2}^{\text{WHH}}$(0) of ${\left[\mathbf{TaNb}\right]}_{\mathbf{1-}\mathit{x}}{\left(\mathbf{ZrHfTi}\right)}_{\mathit{x}}$ with x = 0.3, 0.33, 0.4, 0.5, and 0.84

${\left[\text{TaNb}\right]}_{1-x}{\left(\text{ZrHfTi}\right)}_x$	$T_{\text{c}}$ (resistivity), K	${\left(\frac{d{H}_{\text{c}2}}{dT}\right)}_{T=T_{\text{c}}},$ T/K	${\mu }_0{H}_{\text{c}2}^{\text{WHH}}$(0), T
x = 0.3	8.03	−1.203	6.67
x = 0.33	7.75	−1.449	7.75
x = 0.4	7.56	−1.616	8.43
x = 0.5	6.46	−2.618	11.67
x = 0.84	4.52	−2.893	9.02