Magnetism control of thin CoFeB layers by ferroelectric polarization
Nonvolatile and reversible control of perpendicular magnetic properties of thin Co _0.2 Fe _0.6 B _0.2 layers formed on a MgO layer was demonstrated by ferroelectric switching of the stacked Al _0.88 Sc _0.12 N and Ta _2 O _5 layers. A change in the coercivity ( H _c ) of the 1.3-nm-thick Co _0.2 Fe...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
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| Series: | Applied Physics Express |
| Subjects: | |
| Online Access: | https://doi.org/10.35848/1882-0786/adbf65 |
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| Summary: | Nonvolatile and reversible control of perpendicular magnetic properties of thin Co _0.2 Fe _0.6 B _0.2 layers formed on a MgO layer was demonstrated by ferroelectric switching of the stacked Al _0.88 Sc _0.12 N and Ta _2 O _5 layers. A change in the coercivity ( H _c ) of the 1.3-nm-thick Co _0.2 Fe _0.6 B _0.2 layer from 30 to 141 Oe was confirmed by depleting electrons at the interface, modifying the magnetic domain wall energy. Saturation magnetization showed a slight decrease toward depletion condition, presumably presenting a dead layer at the interface. The ferroelectric polarization-induced control of magnetism has high potential for magnetic memory applications. |
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| ISSN: | 1882-0786 |