Recently, the existence of superconductivity in and other high-pressure hydrides is called into question, because of some flawed magnetic measurements. In Ref.[1] the SCPC model is proposed, where strong pinning of vortices is due to long columnar defects in - with lengths of the order of vortex lengths . Two relevant type of experiments in magnetic fields are explained by this model: (1) Reduction (with respect to standard superconductors) of the thermal broadening of resistance () in magnetic field , , is governed by the small parameter . The measurements give, that in there is a large shift of the irreversible line towards the line. (2) In ZFC (zero field cooled) experiments on penetration of the magnetic field () in [3], the latter reaches the center of a superconducting disk at much larger external fields, i. e. for . The later is due to the pronounced pinning of vortices, but not to the Meissner effect. The calculated - dependence of the penetrated, perpendicular and parallel , magnetic field into the sample is in satisfactory agreement with the experimental results for in [3], where . Problems related to measurements of the Meissner effect in are also discussed. The SCPC model, applied on the bulk sample, predicts, that the latter is a high- superconductor.

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