| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Bending sensor based on flexible spin valve |
| L I Naumova†, R S Zavornitsyn, M A Milyaev, N G Bebenin, A Y Pavlova, M V Makarova, I K Maksimova, V V Proglyado, A A Zakharov, and V V Ustinov |
| M. N. Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, S. Kovalevskoi Street 18, Ekaterinburg 620990, Russia |
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Abstract Flexible spin valves were prepared by magnetron sputtering on polyimide substrates. The buffer layer that reduces significantly the effect of the polymer substrate on the spin valve microstructure and magnetoresistive properties was revealed. Bending deformation was applied to the microobjects based on the flexible spin valves in parallel to anisotropy axes. It was revealed that during the bend the magnetoresistance changes due to the joint impact of both the change of the magnetic field projection on the film plane and the change of the magnetic properties of the ferromagnetic layers. The obtained dependences have been used in construction of bending sensor, in which the flexible spin valve microstripes were united into the Wheatstone bridge.
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Received: 07 June 2022
Revised: 01 August 2022
Accepted manuscript online: 12 August 2022
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PACS:
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75.80.+q
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(Magnetomechanical effects, magnetostriction)
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68.55.J-
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(Morphology of films)
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68.65.Ac
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(Multilayers)
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73.43.Qt
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(Magnetoresistance)
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| Fund: This study was performed within the framework of State Assignment from the Ministry of Education and Science of Russian Federation (topic Spin, No. 122021000036-3 and topic Magnet, No. 122021000034-9) and partially supported by the Russian Foundation for Basic Research (project No. 20-42-660018). |
Corresponding Authors:
L I Naumova
E-mail: naumova@imp.uran.ru
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Cite this article:
L I Naumova, R S Zavornitsyn, M A Milyaev, N G Bebenin, A Y Pavlova, M V Makarova, I K Maksimova, V V Proglyado, A A Zakharov, and V V Ustinov Bending sensor based on flexible spin valve 2023 Chin. Phys. B 32 057502
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