Magnetic and Structural Properties of Exchange Coupled Heusler Alloy NiO/Co2FeAl Interfaces with n-and p-Type Silicon Substrates

  • Arvind KumarEmail author
  • Neelabh Srivastava
  • P. C. Srivastava


Exchange coupled structures of half metallic ferromagnets, Heusler Alloy (FM), Co2FeAl (CFA) and antiferromagnet (AF), NiO were fabricated by electron beam evaporation technique on n- and p-type Si substrates. These fabricated bilayer structures were further characterized for structural, morphological and magnetic point of views using x-ray diffraction (XRD), atomic/magnetic force microscopy (AFM/MFM) and vibrating sample magnetometer (VSM) techniques. Structural study shows the presence of CFA alloy and NiO phase. Surface morphology shows the granular feature of the top surface with grain size of 200–300 nm due to clustering of smaller grains. Smaller sized magnetic domains have been observed for the structures. Hysteresis behaviour of NiO/CFA/Si structures shows the ferromagnetic behaviour for in-plane orientation with negligible exchange bias whereas a significant exchange bias for out of plane orientation has been observed. The observed result could be understood due to surface roughness and arrangements of spins near the interface of ferromagnetic and anti-ferromagnetic layers.


Co2FeAl Heusler alloy XPS exchange bias NiO 


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  1. 1.
    J. Nogués and I.K. Schuller, J. Magn. Magn. Mater. 192, 203 (1999).CrossRefGoogle Scholar
  2. 2.
    W.H. Meiklejohn and C.P. Bean, Phys. Rev. 102, 1413 (1956).CrossRefGoogle Scholar
  3. 3.
    J. Dubowik, I. Gościańska, K. Załȩski, H. Głowiński, Y. Kudryavtsev, and A. Ehresmann, J. Appl. Phys. 113, 193907 (2013).CrossRefGoogle Scholar
  4. 4.
    X.P. Zhao, J. Lu, S.W. Mao, Z.F. Yu, D.H. Wei, and J.H. Zhao, Appl. Phys. Lett. 112, 042403 (2018).CrossRefGoogle Scholar
  5. 5.
    N.C. Koon, Phys. Rev. Lett. 78, 4865 (1997).CrossRefGoogle Scholar
  6. 6.
    M.D. Stiles and R.D. McMichael, Phys. Rev. B 59, 3722 (1999).CrossRefGoogle Scholar
  7. 7.
    P. Miltenyi, M. Gierlings, J. Keller, B. Beschoten, G. Guntherodt, U. Nowak, and K.D. Usadel, Phys. Rev. Lett. 84, 4224 (2000).CrossRefGoogle Scholar
  8. 8.
    U. Nowak, K.D. Usadel, J. Keller, P. Miltényi, B. Beschoten, and G. Guntherodt, Phys. Rev. B 66, 014430 (2002).CrossRefGoogle Scholar
  9. 9.
    J. Camarero, J. Sort, A. Hoffmann, J.M. GarcıaMartın, B. Dieny, R. Miranda, and J. Nogue, Phys. Rev. Lett. 95, 057204 (2005).CrossRefGoogle Scholar
  10. 10.
    J. Saha and R.H. Victora, Phys. Rev. B 73, 104433 (2006).CrossRefGoogle Scholar
  11. 11.
    P.J. Webster, J. Phys. Chem. 32, 1221 (1971).Google Scholar
  12. 12.
    J. Kübler, A.R. Williams, and C.B. Sommers, Phys. Rev. B 28, 1745 (1983).CrossRefGoogle Scholar
  13. 13.
    Y. Miura, K. Nagao, and M. Shirai, Phys. Rev. B 69, 144413 (2004).CrossRefGoogle Scholar
  14. 14.
    T. Ishikawa, H.-X. Liu, T. Taira, K.I. Matsuda, T. Uemura, and M. Yamamoto, Appl. Phys. Lett. 95, 232512 (2009).CrossRefGoogle Scholar
  15. 15.
    J. Dubowik, I. Gościańska, K. Załęski, H. Głowiński, A. Ehresmann, G. Kakazei, and S.A. Bunyaev, Acta Phys. Pol. A 121, 1121 (2012).CrossRefGoogle Scholar
  16. 16.
    Y. Sakuraba, M. Hattori, M. Oogane, H. Kubota, Y. Ando, A. Sakuma, and T. Miyazaki, J. Phys. D Appl. Phys. 40, 1221 (2007).CrossRefGoogle Scholar
  17. 17.
    C. Chappert, A. Fert, and F.N.V. Dau, Nat. Mat. 6, 813 (2007).CrossRefGoogle Scholar
  18. 18.
    C. Felser, G.H. Fecher, and B. Balke, Angew. Chem. Int. Ed. 46, 668 (2007).CrossRefGoogle Scholar
  19. 19.
    K. Kobayashi, R.Y. Umetsu, R. Kainuma, K. Ishida, T. Oyamada, A. Fujita, and K. Fukamichi, Appl. Phys. Lett. 85, 4684 (2004).CrossRefGoogle Scholar
  20. 20.
    I. Galanakis, P.H. Dederichs, and N. Papanikolaou, Phys. Rev. B 66, 174429 (2002).CrossRefGoogle Scholar
  21. 21.
    Y. Ohdaira, M. Oogane, H. Naganuma, and Y. Ando, Appl. Phys. Lett. 99, 132513 (2011).CrossRefGoogle Scholar
  22. 22.
    W. Wang, H. Sukegawa, and K. Inomata, Phys. Rev. B 82, 092402 (2010).CrossRefGoogle Scholar
  23. 23.
    N.P. Alley, S. Takayama, A. Hirohata, and K. O’Grady, IEEE Trans. Magn. 47, 3490 (2011).CrossRefGoogle Scholar
  24. 24.
    H. Endo, A. Hirohata, T. Nakayama, and K. O’Grady, J. Phys. D Appl. Phys. 44, 145003 (2011).CrossRefGoogle Scholar
  25. 25.
    H. Endo, A. Hirohata, J. Sagar, L.R. Fleet, T. Nakayama, and K. O’Grady, J. Phys. D Appl. Phys. 44, 345003 (2011).CrossRefGoogle Scholar
  26. 26.
    K.K. Meng, S.H. Nie, X.Z. Yu, S.L. Wang, W.S. Yan, and J.H. Zhao, J. Appl. Phys. 110, 093904 (2011).CrossRefGoogle Scholar
  27. 27.
    A. Kumar and P.C. Srivastava, J. Elec. Mater. 43, 381 (2014).CrossRefGoogle Scholar
  28. 28.
    A. Kumar, T. Shripathi, and P.C. Srivastava, J. Sci.: Adv. Mater. Dev. 1, 290–294 (2016).CrossRefGoogle Scholar
  29. 29.
    Y. Takamura, R. Nakane, and S. Sugahara, J. Appl. Phys. 107, 09B111 (2010).CrossRefGoogle Scholar
  30. 30.
    J. P. Eberhart, Analyse Structurale et Chimiques Des Materiaux (Paris; Ed. Dunod) 46, 407 (1989).Google Scholar
  31. 31.
    A. Kumar and P.C. Srivastava, J. Exp. Nanosci. 10, 803 (2015).CrossRefGoogle Scholar
  32. 32.
    A. Thiaville, J. Miltat, and J.M. García-Martín, Magnetic force microscopy: images of nanostructures and contrast modelling.Magnetic Microscopy of Nanostructures, ed. H. Hopster and H.P. Oepen (Berlin: Springer, 2005), Google Scholar
  33. 33.
    N. Srivastava and P.C. Srivastava, J. Appl. Phys. 111, 123909 (2012).CrossRefGoogle Scholar
  34. 34.
    V.I. Nikitenko, V.S. Gornakov, L.M. Dedukh, YuP Kabanov, A.F. Khapikov, A.J. Shapiro, R.D. Shull, A. Chaihen, and R.P. Michel, Phys. Rev. B 57, R8111 (1998).CrossRefGoogle Scholar
  35. 35.
    Jose R. Fermin, Revista Mexicana de Fısica 63, 145 (2017).Google Scholar
  36. 36.
    A. Roy, J.A. De Toro, V.S. Amaral, P. Muniz, J.M. Riveiro, and J.M.F. Ferreira, J. Appl. Phys. 115, 073904 (2014).CrossRefGoogle Scholar
  37. 37.
    S. Maat, K. Takano, S.S.P. Parkin, and E.E. Fulletron, Phys. Rev. Lett. 87, 087202-1 (2001).CrossRefGoogle Scholar
  38. 38.
    Z.X. Cheng, H.Y. Zhao, Y. Du, H. Kimura, K. Ozawa, and X.L. Wang, Scripta Mater. 65, 249 (2011).CrossRefGoogle Scholar
  39. 39.
    B. Skubic, J. Hellsvik, L. Nordstrom, and O. Eriksson, Acta Phys. Pol. A 115, 25 (2009).CrossRefGoogle Scholar
  40. 40.
    T. Schulthess and W. Butler, Phys. Rev. Lett. 81, 4516 (1998).CrossRefGoogle Scholar
  41. 41.
    P. Biagioni, A. Brambilla, M. Portalupi, N. Roug-maille, A.K. Schmid, A. Lanzara, P. Vavassori, M. Zani, M. Finazzi, and L. Duo, et al., J. Magn. Magn. Mater. 290, 153 (2005).CrossRefGoogle Scholar
  42. 42.
    A. Brambilla, M. Portalupi, M. Finazzi, G. Ghiringhelli, L. Duo, F. Parmigiani, M. Zacchigna, M. Zangrando, and F. Ciccacci, J. Magn. Magn. Mater. 272, 1221 (2004).CrossRefGoogle Scholar
  43. 43.
    R. Sahoo, D. M. Raj Kumar, D. Arvindha Babu, K. G. Suresh, and M. Manivel Raja, J. Appl. Phys. 113, 17A940 (2013).Google Scholar
  44. 44.
    L. Liya, G. Yicheng, Y. Aru, Y. Jianhong, S. Yinli, and D. Hui, IEEE Trans. Magn. 51 (2015)Google Scholar
  45. 45.
    Z. Qian, J.M. Sivertsen, and J.H. Judy, J. Appl. Phys. 83, 6825 (1998).CrossRefGoogle Scholar
  46. 46.
    D.V. Dimitrov, S. Zhang, J.Q. Xiao, G.C. Hadjipanayis, and C. Prados, Phys. Rev. B 58, 12090 (1998).CrossRefGoogle Scholar
  47. 47.
    D.-H. Han, J.-G. Zhu, J.H. Judy, and J.M. Sivertsen, J Appl Phys 81, 4519 (1998).CrossRefGoogle Scholar
  48. 48.
    J. Nogues, C. Leighton, and I.K. Schuller, Phys. Rev. B 61, 1315 (2000).CrossRefGoogle Scholar
  49. 49.
    H. Ohldag, A. Scholl, F. Nolting, E. Arenholz, S. Maat, A.T. Young, M. Carey, and J. Stohr, Phys. Rev. Lett. 91, 017203 (2003).CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  1. 1.Department of Physics, Atma Ram Sanatan Dharma CollegeUniversity of DelhiNew DelhiIndia
  2. 2.Department of Physics, School of Physical SciencesMahatma Gandhi Central UniversityMotihariIndia
  3. 3.Department of PhysicsBanaras Hindu UniversityVaranasiIndia

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