Thin Film Superconducting MgB2 Grown by MBE without Post-Anneal


We report the synthesis of superconducting MgB2 thin films grown in-situ by molecular beam epitaxy (MBE). Mg-rich fluxes are deposited with B-flux by electron beam evaporation onto c- and r-plane sapphire substrates. Deposition temperature is varied between 260 ~ 320 °C. Base pressure of the MBE chamber is at low 10-10 Torr, rising to 10-8 Torr during deposition due mostly to the presence of hydrogen and nitrogen. Asgrown MgB2 films show superconducting transition at ~ 34 K with ΔTc < 1 K. The films on c-plane sapphire substrates exhibit c-axis oriented peaks of MgB2, and full-width at half maximum of 3 degree in their rocking curves. Azimuthal phi-scan of the MgB2(101) peak shows 12-fold symmetric peaks, which is confirmed by selected area diffraction pattern in transmission electron microscopy (TEM). Plan-view TEM shows hexagonal-shaped grain growth with grain size of about 400 Å.

This is a preview of subscription content, access via your institution.


  1. 1.

    J. Nagamatsu, N. Nakagawa, T. Muranaka, Y. Zenitani, and J. Akimitsu, Nature (London) 410, 63 (2001).

    CAS  Article  Google Scholar 

  2. 2.

    W. N. Kang, H.-J. Kim, E.-M. Choi, C. U. Jung, and S.-I. Lee, Science, 292, 1521 (2001).

    CAS  Article  Google Scholar 

  3. 3.

    C. B. Eom, M. K. Lee, J. H. Choi, L. J. Belenky, X. Song, L. D. Colley, M. T. Naus, S. Patnaik, J. Jiang, M. Rikel, A. Polyanskii, A. Gurevich, X. Y. Cai, S. D. Bu, S. E. Babcock, E. E. Hellstrom, D. C. Larbalestier, N. Rogado, K. A. Regan, M. A. Hayward, T. He, J. S. Slusky, K. Inumaru, M. K. Hass, and R. J. Cava, Nature (London) 411, 558 (2001).

    CAS  Article  Google Scholar 

  4. 4.

    M. Paranthaman, C. Cantoni, H. Y. Zhai, H. M. Christen, T. Aytug, S. Sathyamurthy, E. D. Specht, J. R. Thompson, D. H. Lowndes, H. R. Kerchner, and D. K. Christen, Appl. Phys. Lett. 78, 3669 (2001).

    CAS  Article  Google Scholar 

  5. 5.

    D. H. A. Blank, H. Hilgenkamp, A. Brinkman, D. Mijatovic, G. Rijnders, and H. Rogalla, Appl. Phys. Lett. 79, 394 (2001).

    CAS  Article  Google Scholar 

  6. 6.

    S. H. Moon, J. H. Yun, H. N. Lee, J. I. Kye, H. G. Kim, W. Chung, and B. Oh, Appl. Phys. Lett. 79, 2429 (2001).

    CAS  Article  Google Scholar 

  7. 7.

    A. Berenov, Z. Lockman, X. Qi, J. MacManus-Driscoll, Y. Bugoslavsky, L. F. Cohen, M.-H. Jo, N. A. Stelmashenko, V. N. Tsaneva, M. Kambara, N. Hari Babu, D. A. Cardwell, and M. G. Blamire, Appl. Phys. Lett. 79, 4001 (2001).

    CAS  Article  Google Scholar 

  8. 8.

    K. Ueda and M. Naito, Appl. Phys. Lett. 79, 2046 (2001).

    CAS  Article  Google Scholar 

  9. 9.

    Z.-K. Liu, D. G. Schlom, Q. Li, and X. X. Xi, Appl. Phys. Lett. 78, 3678 (2001).

    CAS  Article  Google Scholar 

  10. 10.

    P. C. Canfield, D. K. Finnermore, S. L. Bud’ko, J. E. Ostenson, G. Lapertot, C. E. Cunningham, and C. Petrovic, Phys. Rev. Lett. 86, 2423 (2001).

    CAS  Article  Google Scholar 

Download references

Author information



Corresponding author

Correspondence to William Jo.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Jo, W., Huh, JU., Ohnishi, T. et al. Thin Film Superconducting MgB2 Grown by MBE without Post-Anneal. MRS Online Proceedings Library 689, 108 (2001).

Download citation