Contributions of Co and Fe orbitals to perpendicular magnetic anisotropy of MgO/CoFeB bilayers with Ta, W, IrMn, and Ti underlayers
作者： Teruo Ono , Teruo Ono , Seungheon Chris Baek , Byong Guk Park , Takuya Taniguchi
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摘要: We study the perpendicular magnetic anisotropy (PMA) of CoFeB/MgO bilayers in contact with W, Ta, IrMn, and Ti, which have been suggested for use as spin–orbit-torque-related underlayers. The saturation magnetization CoFeB depends on underlayer material used owing to formation a dead layer that affects PMA strength each film. X-ray circular dichroism measurement reveals interfacial intermixing suppresses only orbital moment Fe, whereas it simultaneously both in-plane moments Co.
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Hideo Ohno, Samik DuttaGupta, Shunsuke Fukami, Aleksandr Kurenkov, Chaoliang Zhang, Magnetization switching by spin–orbit torque in an antiferromagnet–ferromagnet bilayer system Nature Materials. ,vol. 15, pp. 535- 541 ,(2016) , 10.1038/NMAT4566
A. Manchon, C. Ducruet, L. Lombard, S. Auffret, B. Rodmacq, B. Dieny, S. Pizzini, J. Vogel, V. Uhlíř, M. Hochstrasser, G. Panaccione, Analysis of anisotropy crossover due to oxygen in Pt/Co/MOx trilayer arXiv: Mesoscale and Nanoscale Physics. ,(2007) , 10.1063/1.2969711
Soonha Cho, Seung-heon Chris Baek, Kyeong-Dong Lee, Younghun Jo, Byong-Guk Park, Large spin Hall magnetoresistance and its correlation to the spin-orbit torque in W/CoFeB/MgO structures. Scientific Reports. ,vol. 5, pp. 14668- 14668 ,(2015) , 10.1038/SREP14668
S. Mangin, D. Ravelosona, J. A. Katine, M. J. Carey, B. D. Terris, Eric E. Fullerton, Current-induced magnetization reversal in nanopillars with perpendicular anisotropy Nature Materials. ,vol. 5, pp. 210- 215 ,(2006) , 10.1038/NMAT1595
Xiaoyong Liu, Dipanjan Mazumdar, Weifeng Shen, B. D. Schrag, Gang Xiao, Thermal stability of magnetic tunneling junctions with MgO barriers for high temperature spintronics Applied Physics Letters. ,vol. 89, pp. 023504- ,(2006) , 10.1063/1.2219997
S. Yakata, H. Kubota, Y. Suzuki, K. Yakushiji, A. Fukushima, S. Yuasa, K. Ando, Influence of perpendicular magnetic anisotropy on spin-transfer switching current in CoFeB∕MgO∕CoFeB magnetic tunnel junctions Journal of Applied Physics. ,vol. 105, ,(2009) , 10.1063/1.3057974
Xiaoyong Liu, Wenzhe Zhang, Matthew J. Carter, Gang Xiao, Ferromagnetic resonance and damping properties of CoFeB thin films as free layers in MgO-based magnetic tunnel junctions Journal of Applied Physics. ,vol. 110, pp. 033910- ,(2011) , 10.1063/1.3615961
J Stöhr, None, Exploring the microscopic origin of magnetic anisotropies with X-ray magnetic circular dichroism (XMCD) spectroscopy Journal of Magnetism and Magnetic Materials. ,vol. 200, pp. 470- 497 ,(1999) , 10.1016/S0304-8853(99)00407-2
Jaivardhan Sinha, Maria Gruber, Masaya Kodzuka, Tadakatsu Ohkubo, Seiji Mitani, Kazuhiro Hono, Masamitsu Hayashi, Influence of boron diffusion on the perpendicular magnetic anisotropy in Ta|CoFeB|MgO ultrathin films Journal of Applied Physics. ,vol. 117, pp. 043913- ,(2015) , 10.1063/1.4906096
W. H. Butler, X.-G. Zhang, T. C. Schulthess, J. M. MacLaren, Spin-dependent tunneling conductance of Fe | MgO | Fe sandwiches Physical Review B. ,vol. 63, pp. 054416- ,(2001) , 10.1103/PHYSREVB.63.054416