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We have investigated the correlation between the "paramagnetic" peculiarityof the normal-to-superconductive phase transition - detected first in a LTSCtin, in 1989, and then confirmed in HTSC materials with much more higherresolution (by a sensitive SFCO method) - and the other weakly expressedeffect, detected also both in LTSC & HTSC materials before their heatcapacity's known "jump". In a low-Tc superconductive tin this thermal effect isdetected a half century ago, by Corak, but passed unnoticed so far. We show inthis work that, externally similar these 2 fine effects really and truly havethe same physical roots. To prove this assumption theoretically, and to revealthe reasons for their common origin, we use here a concept, which admitsexistence of two types of the Cooper pairs in SC materials - "singlet" and"triplet". As we conclude in this paper, they show completely different,non-traditional temperature behavior upon cooling of SC materials. We believethat this study results (along with the "triplet" superconductivity, provenexperimentally in Josephson junctions quite recently, with the ferromagneticbarrier) may obtain key importance for the true understanding of the realnature of the superconductive phenomenon (in whole) and to uncover electron"pairing" mechanisms above the Meissner expel (in particular).

On the thermal peculiarity of the SC transition, precursor to specific  heat's "jump": its relation to the "paramagnetic" effect, precursor to  Meissner ejection - both revealed in HTSC material by the super-high  sensitive SFCO method