Glass Physics and Chemistry

, Volume 36, Issue 4, pp 411–418 | Cite as

Charge states of atoms in ceramic superconductors HgBa2Can − 1Cu n O2n + 2, Tl2Ba2Can − 1Cu n O2n + 4, and Bi2Sr2Can − 1Cu n O2n + 4 (n = 1–3)

  • G. A. Bordovskii
  • A. V. Marchenko
  • F. S. Nasredinov
  • P. P. SereginEmail author


The parameters of the electric-field-gradient tensor for copper sites in the HgBa2Can − 1Cu n O2n + 2, Tl2Ba2Can − 1Cu n O2n + 4, and Bi2Sr2Can − 1Cu n O2n + 4 (n = 1–3) lattices have been determined using 67Cu(67Zn) Mössbauer emission spectroscopy and calculated in the framework of the point-charge approximation. The agreement between the experimental and calculated parameters has been achieved under the assumption that the holes formed as a result of the decrease in the oxidation state of a part of the mercury, thallium, or bismuth atoms are distributed over the oxygen sites in the Cu-O or adjacent planes. It has been demonstrated that the oxidation state of cations can be controlled in high-temperature superconducting ceramic materials.

Key words

superconductors Mössbauer emission spectroscopy parameters of the electric-field-gradient tensor doping with the 67Cu isotope 


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  1. 1.
    Bordovskii, G.A., Marchenko, A.V., Seregin, P.P., and Terukov, E.I., Experimental Determination of the Spatial Distribution of Electron Defects in La2 − xSrxCuO4 and Nd2 − xCexCuO4 Crystal Lattices, Pis’ma Zh. Tekh. Fiz., 2008, vol. 34, no. 9, pp. 79–85 [Tech. Phys. Lett. (Engl. transl.), 2008, vol. 34, no. 5, pp. 397–400].Google Scholar
  2. 2.
    Bordovskii, G.A., Marchenko, A.V., Seregin, P.P., and Saifulina, A.N., Two-Electron Centers with Negative Correlation Energy in La2−xSrxCuO4, Nd2−xCexCuO4, and YBa2Cu3O7−x Lattices, Izv. Ross. Gos. Pedagog. Univ. im. A. I. Gertsena, Estestv. Tochn. Nauki, 2008, no. 10, pp. 25–37.Google Scholar
  3. 3.
    Bordovskii, G.A., Marchenko, A.V., Seregin, P.P., and Saifulina, A.N., Effective Atomic Charges in RBa2Cu3O7 − x Lattices, in Materialy XI Mezhdunarodnoi konferentsii “Fizika dielektrikov” (Proceedings of the XI International Conference “Physics of Dielectrics,” St. Petersburg, Russia, 2008), St. Petersburg, 2008, vol. 1, pp. 30–33.Google Scholar
  4. 4.
    Bordovskii, G.A., Marchenko, A.V., and Seregin, P.P., Atomic Charges in YBa2Cu3O7, YBa2Cu4O8, and Y2Ba4Cu7O15 Ceramic Samples, Fiz. Khim. Stekla, 2009, vol. 35, no. 6, pp. 848–859 [Glass Phys. Chem. (Engl. transl.), 2009, vol. 35, no. 6, pp. 643–651].Google Scholar
  5. 5.
    Shaked, H., Keane, P.M., Rodriguez, J.C., Owen, F.F., Hitterman, R.L., and Jorgensen, J.D., Crystal Structures of the High-Tc Superconducting Copper-Oxides, Amsterdam (Netherlands): Elsevier, 1994.Google Scholar
  6. 6.
    Seregin, P.P., Fizicheskie osnovy messbauerovskoi spektroskopii (Physical Principles of Mössbauer Spectroscopy), St. Petersburg: St. Petersburg State Pedagogical University, 2002 [in Russian].Google Scholar
  7. 7.
    Machi, T., Usami, R., Yamauchi, H., Koshizuka, N., and Yasuoka, H., NMR and NQR Study in HgBa2CuO4 + x, Physica C (Amsterdam), 1994, vols. 235–240, pp. 1675–1676.CrossRefGoogle Scholar
  8. 8.
    Horvatic, M., Berthier, C., Carretta, P., Gillet, J.A., Segransan, P., Berthier, Y., and Capponi, J.J., NMR Investigation of HgBa2CaCu2O6 + x, Physica C (Amsterdam), 1994, vols. 235–240, pp. 1669–1670.CrossRefGoogle Scholar
  9. 9.
    Magishi, K., Kitaoka, Y., Zheng, G.-Q., Asayama, K., Tokiwa, K., Iyo, A., and Ihara, H., Cu-63 NMR Probe of Superconducting Properties in HgBa2Ca2Cu3O8 + x, Phys. Rev. B: Condens. Matter, 1996, vol. 53, no. 14, pp. R8906–R8909.ADSGoogle Scholar
  10. 10.
    Alekseev, N.E., Nikolaev, E.G., Mitin, A.V., Khlybov, E.P., Zhdanov, S.V., Lavrentjev, V.V., and Medvedev, E.Yu., NQR of Cu in Tl2Ba2CuO6 + x, Physica C (Amsterdam), 1992, vol. 192, pp. 147–150.CrossRefADSGoogle Scholar
  11. 11.
    Zhdanov, Yu.I., Aleksashin, B.A., Mikhalyov, K.N., Lavrentjev, V.V., Verkhovskii, S.V., Yakubovskii, A.Yu., Ozhogin, V.I., Shustov, L.D., and Myasoedov, A.B., Interlayer CuO2 Antiferromagnetic Correlations in Tl-Based Superconducting Tl2Ba2CanCun + 1O6 + 2n and Tl0.5Pb0.5Sr2Ca0.8Y0.2Cu2O7 Oxides: 63Cu and 205Tl NMR and Spin-Lattice Relaxation Data, Physica C (Amsterdam), 1991, vol. 183, pp. 247–251.CrossRefADSGoogle Scholar
  12. 12.
    Zhdanov, Yu.I., Bogdanovich, A.M., Mikhalev, K.N., Aleksashin, B.A., Lavrent’ev, V.V., Verkhovskii, S.V., Akimov, A.I., and Chernyakova, A.P., NQR Frequencies of Crystallographically Nonequivalent Positions of Copper Atoms in Tl2Ba2Ca2Cu3O10, Sverkhprovodimost: Fiz., Khim., Tekh., 1993, vol. 6, pp. 750–757.Google Scholar
  13. 13.
    Kohori, Y., Ueda, K.-J., and Kohara, T., Cu NQR in Bi2Sr2CuO6, Physica C (Amsterdam), 1991, vols. 185–189, pp. 1187–1188.CrossRefGoogle Scholar
  14. 14.
    Rajarajan, A.K., Palkar, V.R., Mishra, N.C., Miltani, M.S., Vijayaraghavan, R., and Gupta, L.C., Nuclear Quadrupole Resonance Studies in Bi2Sr2CaCu2Ox, Solid State Commun., 1989, vol. 71, pp. 835–837.CrossRefADSGoogle Scholar
  15. 15.
    Statt, B.W. and Song, L.M., Copper Quadrupolar Site Assignments for Bi1.6Pb0.4Sr2Ca2Cu3O10, Physica C (Amsterdam), 1991, vol. 183, pp. 372–378.CrossRefADSGoogle Scholar
  16. 16.
    Smith, D. and Slichter, C., The Study of Mechanisms of Superconductivity by NMR Relaxation, Lect. Notes Phys., 2006, vol. 684, pp. 243–295.CrossRefADSGoogle Scholar
  17. 17.
    Walstedt, R.E., Relaxation Models for Cuprate of NMR, in Springer Tracts in Modern Physics, Berlin: Springer, 2007, vol. 228, pp. 159–211.Google Scholar
  18. 18.
    Zhdanov, Yu.I., Mikhalev, K.N., and Aleksashin, B.A., 205Tl Nuclear Magnetic Resonance and Spin-Lattice Relaxation in Tl2Ba2CaCu2O8 + x and Tl2Ba2Ca2Cu3O10 + x samples, Sverkhprovodimost: Fiz., Khim., Tekh., 1990, vol. 3, pp. 194–200.Google Scholar
  19. 19.
    Oashi, T., Kumagai, K., Nakajima, Y., and Tomita, T., Observation of Cu-NQR in Bi2Sr2Ca1 − xYxCu2O8 + y, Physica C (Amsterdam), 1989, vol. 157, pp. 315–319.CrossRefADSGoogle Scholar

Copyright information

© Pleiades Publishing, Ltd. 2010

Authors and Affiliations

  • G. A. Bordovskii
    • 1
  • A. V. Marchenko
    • 1
  • F. S. Nasredinov
    • 2
  • P. P. Seregin
    • 1
    Email author
  1. 1.Herzen Russian State Pedagogical UniversitySt. PetersburgRussia
  2. 2.St. Petersburg State Polytechnical UniversitySt. PetersburgRussia

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