ISSUE 2(7), 2025 Analysis of the thermal state of cryogenic current leads with a change in the liquid nitrogen level in a cryostat Yu. L. Buyanov, N. N. Balashov 4-15 Methodology for synthesis of 12442 family iron-based stoichiometric superconductors: KCa2Fe4As4F2, RbCa2Fe4As4F2, CsCa2Fe4As4Fٜ2 A. A. Gippius, V. A. Vlasenko, A. I. Shilov, S. Yu. Gavrilkin, K. S. Pervakov 16-21 On the nature of the pseudogap state in cuprates V. I. Kuz’min, S. V. Nikolaev, S. G. Ovchinnikov 23-29 Investigation of electrophysical properties and structure of gadolinium-based HTSP tapes subjected to more than 10 years of ageing N. N. Balashov, E. A. Golovkova, P. N. Degtyarenko 30-39 Dynamic spin susceptibility in a realistic ten-orbital model of iron-based compounds E. A. Larionov, M. M. Korshunov 41-51 Accounting the size distribution of HTS granules for the critical current density from magnetic measurements D. M. Gokhfeld, Yu. S. Gokhfeld 52-58 Effect of O+ ion irradiation on the magnetic properties of superconducting magnesium diboride composites S. V. Veselova, P. А. Fedin, I. V. Yanilkin, М. А. Cherosov, А. I. Gumarov, D. S. Uvin, Т. V. Kulevoy, R. G. Batulin 60-72 In Memory of Hamlet Georgievich Khodzhibagiyan А. V. Butenko, A. O. Sidorin, D. N. Nikiforov, M. S. Novikov, P. N. Degtyarenko 73-74 Telegram journal group