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DS: Fachverband Dünne Schichten
DS 15: Organic Thin Films, Organic-Inorganic Interfaces
DS 15.2: Vortrag
Freitag, 21. März 2025, 10:00–10:15, H3
Thin film heterostructures based on Co/Ni synthetic antiferromagnets on polymer tapes: towards a sustainable flexible spintronics — •Mariam Hassan1, Sara Laureti2, Christian Rinaldi3, Federico Fagiani3, Gianni Barucca4, Manfred Albrecht5, and Gaspare Varvaro2 — 1Institute of Physics, TU Chemnitz, Germany — 2CNR-ISM, nM2-Lab, Italy — 3Department of Physics, Politecnico di Milano, Italy — 4Università Politecnica delle Marche, Dipartimento SIMAU, Italy — 5Institute of Physics, University of Augsburg, Germany
The PGMs-free Co/Ni-system offers several advantages for spin-based devices such as low damping and high spin polarization, and they contribute to a more sustainable future. Moreover, these films could be good substrates for the investigation of the chiral-induced spin selectivity "CISS" effect. In this work, flexible synthetic-antiferromagnets with perpendicular-magnetic-anisotropy (PMA-SAFs) and GMR-spin-valves (SVs) containing a SAF-reference electrode and a Co/Ni-free layer were deposited on flexible polyethylene naphthalate tapes with different combinations of buffer and capping layers (Pt, Pd, Cu/Ta). High-quality SAFs with a fully compensated antiferromagnetic region and SVs with a sizeable GMR ratio were obtained. The best performances are achieved with PGMs used as buffer layer and Cu as capping layer[1]. The results indicate that complex Co/Ni-based heterostructures with reduced content of PGMs deposited on flexible tapes allow for the development of novel shapeable and sustainable spintronic devices. [1]ACS Appl. Mater. Interfaces. 14 (2022) 51496-51509.
Keywords: SYMS