Resistance and magnetization measurements have been carried out as a function of temperature, applied field, and transport current (resistance only) on a series of dilute In-Bi alloy foils ($0.45<\mathrm{}{\kappa }_1<0.75\mathrm{}$, thickness $d\ge 0.002$ cm). The data enable the determination of $H_{c2\mathrm{}}$, $H_{\mathrm{cB}}$, ${\kappa }_1\mathrm{}\left(T\right)\mathrm{}$, and ${\kappa }_2\mathrm{}\left(T\right)\mathrm{}$ over most of the superconducting temperature range ($t\gtrsim 0.3$). It is found that In-1.25 at.% Bi [${\kappa }_1\left(T_c\right)\approx 0.64$], and In-1.15 at.% Bi [$\kappa \left(T_c\right)\approx 0.62$]—both of which are bulk type-II superconductors at temperatures well below $T_c$—exhibit mixed-state-like behavior as foils in a transverse applied field at all temperatures below $T_c$. Specifically, at thicknesses less than approximately 0.005 cm, the transverse-field magnetization exhibits an apparent second-order transition at $H_{c2\mathrm{}}<H_{\mathrm{cB}}$, the parallel transition field. The $H_{c2\mathrm{}}\mathrm{}\left(T\right)\mathrm{}$ and ${\kappa }_1\mathrm{}\left(T\right)\mathrm{}$ values thus determined are in good agreement with the dirty-limit-theory temperature dependence. Moreover, the ${\kappa }_2\mathrm{}\left(T\right)\mathrm{}$ values which are determined from the slope of the transverse-field magnetization by the formula $-4\mathrm{}\pi M=\frac{(H_{c2\mathrm{}}-H_0)}{\left[\right(2\mathrm{}{{\kappa }_2}^2-1)\beta +1]}$ are in good agreement with the ${\kappa }_1$ values near $T_c$ and exhibit similar temperature dependence. It is found that the critical fields of the magnetization curves can be identified with characteristic features of the resistive transition curves.

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