Issues »  Volume 41, Issue 2

Influence of an Atmosphere of Annealing on Magnetic Properties of Nanosize Films of FePt Alloy

I. O. Kruhlov$^{1}$, V. V. Mohylko$^{1}$, I. A. Vladymyrskyi$^{1}$, Iu. M. Makogon$^{1}$, M. O. Vasylyev$^{2}$, S. I. Sidorenko$^{1}$, S. M. Voloshko$^{1}$

$^{1}$National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37 Peremohy Ave., UA-03056 Kyiv, Ukraine
$^{2}$G. V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine

Received: 29.10.2018. Download: PDF

The features of the structure and phase-composition formations as well as magnetic properties of the 30 nm thick FePt-alloy films after heat treatment in the inert (Ar) and combined (Ar + 3% H$_2$) atmospheres in the temperature range 500–900°C are investigated. The effect of thermal stabilization of both the size of the coherent-scattering areas of the ordered $L1_0$-FePt phase and values of the films’ surface roughness with addition of hydrogen to the annealing atmosphere is revealed. Hydrogen influence also appears in acceleration of the ordering processes and increasing of film-material coercivity at low temperatures in comparison with the neutral annealing atmosphere.

Key words: nanosize film, ordering, annealing atmosphere, coercivity.

URL: http://mfint.imp.kiev.ua/en/abstract/v41/i02/0157.html

DOI: https://doi.org/10.15407/mfint.41.02.0157

PACS: 66.30.Pa, 68.55.-a, 75.50.Ss, 75.50.Vv, 75.70.Ak, 75.70.Kw, 81.40.Ef

Citation: I. O. Kruhlov, V. V. Mohylko, I. A. Vladymyrskyi, Iu. M. Makogon, M. O. Vasylyev, S. I. Sidorenko, and S. M. Voloshko, Influence of an Atmosphere of Annealing on Magnetic Properties of Nanosize Films of FePt Alloy, Metallofiz. Noveishie Tekhnol., 41, No. 2: 157—171 (2019) (in Ukrainian)

REFERENCES
  1. J. A. Christodoulides, Y. Huang, Y. Zhang, G. C. Hadjipanayis, I. Panagiotopoulos, and D. Niarchos, J. Appl. Phys., 87, No. 9: 6938 (2000). Crossref
  2. T. Shima, K. Takanashi, Y. K. Takahashi, K. Hono, G. Q. Li, and S. Ishio, J. Magn. Magn. Mater., 266, Nos. 1–2: 171 (2003). Crossref
  3. S. Pisana, Sh. Jain, J. W. Reiner, O. Mosendz, G. J. Parker, M. Staffaroni, O. Hellwig, and B. C. Stipe, IEEE Trans. Magn., 51, No. 4: 1 (2015). Crossref
  4. S. N. Hsiao, S. H. Liu, S. K. Chen, T. S. Chin, and H. Y. Lee, Appl. Phys. Lett., 100, No. 26: 261909 (2012). Crossref
  5. S. N. Hsiao, L. H. Chen, S. H. Liu, J. L. Tsai, and H. Y. Lee, J. Alloys Compd., 656: 876 (2016). Crossref
  6. C. Brombacher, C. Schubert, K. Neupert, M. Kehr, J. Donges, and M. Albrecht, J. Phys. D, Appl. Phys., 44, No. 35: 355001 (2011). Crossref
  7. L. W. Wang, W. C. Shih, Y. C. Wu, and C. H. Lai, Appl. Phys. Lett., 101: 252403 (2012). Crossref
  8. I. A. Vladymyrskyi, M. V. Karpets, G. L. Katona, D. L. Beke, S. I. Sidorenko, T. Nagata, T. Nabatame, T. Chikyow, F. Ganss, G. Beddies, M. Albrecht, and I. M. Makogon, J. Appl. Phys., 116: 044310 (2014). Crossref
  9. I. A. Vladymyrskyi, O. P. Pavlova, T. I. Verbitska, S. I. Sidorenko, G. L. Katona, D. L. Beke, and Iu. M. Makogon, Vacuum, 101: 33 (2014). Crossref
  10. W. B. Mi, E. Y. Jiang, and H. L. Bai, J. Appl. Phys., 99, No. 3: 034315 (2006). Crossref
  11. V. Phatak, A. Gupta, V. R. Reddy, S. Chakravarty, H. Schmidt, and R. Ruffer, Acta Mater., 58, No. 3: 979 (2010). Crossref
  12. Y. Tran and C. D. Wright, J. Magn. Magn. Mater., 331: 216 (2013). Crossref
  13. Ch.-H. Lai, Yu.-Ch. Wu, and Ch.-Ch. Chiang, J. Appl. Phys., 97, No. 10: 10H305 (2005). Crossref
  14. K. R. Coffey, M. A. Parker, and J. K. Howard, IEEE Trans. Magn., 31, No. 6: 2737 (1995). Crossref
  15. T. S. Vedantam, J. P. Liu, H. Zeng, and S. Sun, J. Appl. Phys., 93, No. 10: 7184 (2003). Crossref
  16. K. Leistner, J. Thomas, H. Schlorb, M. Weisheit, L. Schultz, and S. Fahler, Appl. Phys. Lett., 85, No. 16: 3498 (2004). Crossref
  17. I. A. Vladymyrskyi, M. V. Karpets, F. Ganss, G. L. Katona, D. L. Beke, S. I. Sidorenko, T. Nagata, T. Nabatame, T. Chikyow, G. Beddies, M. Albrecht, and Iu. M. Makogon, J. Appl. Phys., 114, No. 16: 164314 (2013). Crossref
  18. R. Maaß, M. Weisheit, S. Fahler, and L. Schultz, J. Appl. Phys., 100, No. 7: 073910 (2006). Crossref
  19. A. K. Orlov, O. O. Zhabynska, I. A. Vladymyrskyi, S. M. Voloshko, S. I. Sidorenko, K. Kato, and T. Ishikawa, Thin Solid Films, 658: 12 (2018). Crossref
  20. L. Jahn, R. Schumann, and V. Christoph, phys. status solidi (a), 88, No. 2: 595 (1985). Crossref
  21. D. Y. Oh and J. K. Park, J. Appl. Phys., 97, No. 10: 10N105 (2005). Crossref
  22. V. N. Chuvil'deev and E. S. Smirnova, Fizika Metallov i Metallovedenie, 92, No. 2: 15 (2001) (in Russian).

© 2013–2019 "G.V. Kurdyumov Institute for Metal Physics"