Impact of minor hysteresis loops in integrated inductors with ferromagnetic films
Integration of inductors on silicon chips is becoming more and more relevant for monolithic electronic applications. In this Letter, we investigate the impact of minor hysteresis loops in an integrated inductor with spiral geometry sandwiched between two soft magnetic layers made of MoNiFe/Cr multil...
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| Veröffentlicht in: | Applied physics letters 2023-03, Vol.122 (11) |
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| container_title | Applied physics letters |
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| creator | Cuccurullo, S. Maspero, F. Koplak, O. Pavese, G. Albisetti, E. Cantoni, M. Bertacco, R. |
| description | Integration of inductors on silicon chips is becoming more and more relevant for monolithic electronic applications. In this Letter, we investigate the impact of minor hysteresis loops in an integrated inductor with spiral geometry sandwiched between two soft magnetic layers made of MoNiFe/Cr multilayers. Despite high magnetic susceptibility and low coercivity of optimized multilayers, we find that the inductance is strongly dependent on the AC voltage applied to the device, showing a bell-shaped behavior. Comparing the measured inductance with magneto-optical Kerr effect and vibrating sample magnetometry measurements, we show that the low-signal behavior is limited by domain wall pinning/depinning, which determine the effective susceptibility associated with minor hysteresis loops driven by the applied AC voltage. |
| doi_str_mv | 10.1063/5.0127390 |
| format | Article |
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| ispartof | Applied physics letters, 2023-03, Vol.122 (11) |
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| language | eng |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Applied physics Coercivity Domain walls Electric potential Ferromagnetic films Ferromagnetic materials Hysteresis loops Inductance Inductors Kerr magnetooptical effect Magnetic measurement Magnetic permeability Multilayers Voltage |
| title | Impact of minor hysteresis loops in integrated inductors with ferromagnetic films |
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