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Influence of perpendicular magnetic anisotropy on spin-transfer switching current in CoFeB∕MgO∕CoFeB magnetic tunnel junctions
Abstract
We investigated the spin-torque diode effect in submicron-scale Co60Fe20B20∕MgO∕(CoxFe1−x)80B20 (0⩽x⩽0.9) magnetic tunnel junctions (MTJs) under perpendicular magnetic fields Hext up to 10kOe. A single peak was clearly observed in every spin-torque diode spectrum and the dependence of resonant frequency fres on Hext was well explained by using Kittel’s formula. It was found that effective demagnetizing fields in the perpendicular-to-plane direction of the Fe-rich CoFeB free layers obtained from the spectra were considerably smaller than those expected from the magnetizations of the free layers. This suggested that the Fe-rich CoFeB free layers exhibited a perpendicular magnetic anisotropy, which agreed well with the reduced switching current density in the MTJs.
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Cited by
Yang, H. X., Chshiev, M., Dieny, B., Lee, J. H., Manchon, A., & Shin, K. H. (2011) · Physical Review B · doi:10.1103/physrevb.84.054401 · Cited by 657
Yakushiji, K., Fukushima, A., Kubota, H., Konoto, M., & Yuasa, S. (2013) · Applied Physics Express · doi:10.7567/apex.6.113006 · Cited by 76
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Metadata
- Authors
- Yakata, S., Kubota, H., Suzuki, Y., Yakushiji, K., Fukushima, A., Yuasa, S., & Ando, K.
- Venue
- Journal of Applied Physics
- Publisher
- AIP Publishing
- Published
- 2009-04-01
- Volume
- 105
- Issue
- 7
- ISSN
- 0021-8979 (ISSN-L)
- 1089-7550
- OpenAlex
- W1977634379
- Cited by
- 183
- References
- 0
- FWCI
- 4.83
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Influence of perpendicular magnetic anisotropy on spin-transfer switching current in CoFeB∕MgO∕CoFeB magnetic tunnel junctions. https://app.cochat.ai/papers/10.1063/1.3057974
- The paper
- Yakata, S., Kubota, H., Suzuki, Y., Yakushiji, K., Fukushima, A., Yuasa, S., & Ando, K. (2009). Influence of perpendicular magnetic anisotropy on spin-transfer switching current in CoFeB∕MgO∕CoFeB magnetic tunnel junctions. Journal of Applied Physics. https://doi.org/10.1063/1.3057974
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