LAUSR

Magnetization as a function of the magnetic field m(H) is studied in the T=2-300 K temperature range at magnetic fields H ≤ 30 kOe in semiconducting alloys (PbzSn1–z)0.84In0.16Te with a lead content of z=0.3; 0.4, which corresponds to the highest critical parameters of the superconducting transition. For the sample (Pb0.4Sn0.6) 0.84In0.16Te the critical temperature Tc≈ 3.8 K and the critical magnetic field Hc2= 22 kOe (T=2 K). At T 3 K the peak-effect is no longer observed. The obtained data is used as a basis for discussing the possible nature of the peak-effect observed in (PbzSn1–z)0.84In0.16Te, z=0.3 and 0.4. Models based on an analysis of the system of pinning centers in the material, and the vortex structure dynamics under changing external parameters, are considered.Magnetization as a function of the magnetic field m(H) is studied in the T=2-300 K temperature range at magnetic fields H ≤ 30 kOe in semiconducting alloys (PbzSn1–z)0.84In0.16Te with a lead content of z=0.3; 0.4, which corresponds to the highest critical parameters of the superconducting transition. For the sample (Pb0.4Sn0.6) 0.84In0.16Te the critical temperature Tc≈ 3.8 K and the critical magnetic field Hc2= 22 kOe (T=2 K). At T 3 K the peak-effect is no longer observed. The obtained data is used as a basis for discussing the possible nature of the peak-effect observed in (PbzSn1–z)0.84In0.16Te, z=0.3 and 0.4....