Field-dependent diamagnetic transition in magnetic superconductor $S{m}_{1.85}C{e}_{0.15}Cu{O}_{4-y}$

R. Prozorov, D. D. Lawrie, I. Hetel +2

The magnetic penetration depth of single crystal $\mathrm{S}{\mathrm{m}}_{1.85}\mathrm{C}{\mathrm{e}}_{0.15}\mathrm{Cu}{\mathrm{O}}_{4-\mathrm{y}}$ was measured down to 0.4 K in dc fields up to 7 kOe. For insulating $\mathrm{S}{\mathrm{m}}_2\mathrm{Cu}{\mathrm{O}}_4$, Sm${}^{3+}$…