Last decade rose intensive study of layered superconductor-ferromagnet (S/F) nanostructures, motivated by rapid increasing implementation of S/F hybrids in superconducting spintronics. Theory of S/F hybrid heterostructures with two and more ferromagnetic layers predicts generation of a non-uniform superconductivity, a long-range odd-in-frequency triplet pairing at non-collinear alignment (NCA) of the F-layers magnetizations [1]. Using the ideas of the superconducting triplet spin-valve [2-4] we have fabricated Co/CoOx/Cu41Ni59/Nb/Cu41Ni59 multilayred hybrids (Fig.1) and detected triplet pairing: switching of the proximity-effect coupled heterostructures from normal to superconducting state. The resistance of the samples as a function of an external magnetic field shows that the system is superconducting at the collinear alignment of the Cu41Ni59 and Co layers magnetic moments, but switches to the normal conducting state at the NCA configuration. The existence of the Tc minimum at the NCA regime is consistent with the theoretical prediction of the long-range triplet pairing. The Co/CoOx/Cu41Ni59/Nb/Cu41Ni59 layered heterostructures were prepared by magnetron sputtering on silicon substrate covered by a silicon buffer layer prior the heterostructures deposition [5]. The Co/CoOx composite layer provided strong exchange biasing (~ 1800 Oe) of the adjacent hard ferromagnetic Cu41Ni59 alloy layer, while the outer soft Cu41Ni59 alloy layer could be remagnetized by a weak external magnetic field creating controllable alignments with respect to the hard interior Cu41Ni59 layer and the metallic Co layer as well. Upon cycling the in-plane magnetic field in the range ± 6 kOe and keeping temperature close to the superconducting transition, a memory effect has been detected. If the magnetic field was dropped to zero from the initial fieldcooling direction at 10 kOe, the heterostructures resistance dropped down to the almost superconducting low-resistive state. Changing polarity of the field, raising its magnitude to -6 kOe and driving the field to zero again brought the system to the resistance at the normal conducting state. That bistability was repeatedly reproduced upon further cycling along the full magnetic hysteresis loop of the heterostructures. Both, low- and high-resistive states at zero magnetic field were determined solely by pre-history of the field cycling and did not need biasing field to keep them steady.figureFigure 1: TEM image of the hybrid nanostructure Co/CoOx/Cu41Ni59/Nb/Cu41Ni59The detected triplet spin-valve effect and the memory effect, caused by generation of the triplet pairing at non-collinear magnetic configurations, opens possibilities for design of a new generation of superconducting spintronic devices: high frequency operating superconducting spin-valves and memory elements. The support by A.v.Humbold foundation grant “Institutspartnerschaften, - Nonuniform superconductivity in layered SF-nanostructures Superconductor/Ferromagnet” for IEEN(Moldova)-KIT(Germany), and STCU research project # 5982 “Experimental investigation of the proximity effect in layered superconductor/ferromagnet hybrid structures”, are gratefully acknowledged.