Advertisement

Effect of spatial spin modulation on the relaxation and NMR frequencies of 57Fe nuclei in a ferroelectric antiferromagnet BiFeO3

  • A. V. Zalesskii
  • A. A. Frolov
  • A. K. Zvezdin
  • A. A. Gippius
  • E. N. Morozova
  • D. F. Khozeevc
  • A. S. Bush
  • V. S. Pokatilov
Solids Structure

Abstract

The 57Fe NMR spectra of the 57Fe-enriched (95.43%) ceramics of a ferroelectric antiferromagnet BiFeO3 with a spatially modulated magnetic structure have been studied. It is established that a cycloidal spin modulation in BiFeO3 causes a spatial modulation of the spin-spin relaxation rate along the magnetic cycloid period and results in inhomogeneous broadening of the local NMR lineshape. It is also found that the local magnetic moments of Fe ions in various parts of the cycloid depend differently on the temperature, which is indicative of a difference in the spin wave excitation. The observed phenomena can be explained in terms of the Shul-Nakamura indirect nuclear interaction which becomes effective at high concentrations of the magnetoactive nuclei and low temperatures. Similarity of the obtained experimental results to the regularities of NMR in the Bloch walls is discussed.

Keywords

BiFeO3 Spin Wave Spatial Modulation Nuclear Interaction Spin Modulation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    F. Kubel and H. Schmid, Acta Crystallogr. B 46, 698 (1990).CrossRefGoogle Scholar
  2. 2.
    I. Sosnowska, T. Peterlin-Neumaier, and E. Steichele, J. Phys. C: Sol. St. Phys. 15, 4835 (1982).ADSGoogle Scholar
  3. 3.
    I. Sosnowska and A. K. Zvezdin, J. Magn. Magn. Mat. 140–144, 167 (1995).Google Scholar
  4. 4.
    M.-M. Tehranchi, N. F. Kubrakov, and A. K. Zvezdin, Ferroelectrics 204, 181 (1997).Google Scholar
  5. 5.
    Yu. F. Popov, A. K. Zvezdin, G. P. Vorob’ev, et al., Pis’ma Zh. Éksp. Teor. Fiz. 57, 65 (1993) [JETP Lett. 57, 69 (1993)].Google Scholar
  6. 6.
    Yu. F. Popov, A. M. Kadomtseva, G. P. Vorob’ev, and A. K. Zvezdin, Ferroelectrics 162, 135 (1994).Google Scholar
  7. 7.
    A. M. Kadomtseva, Yu. F. Popov, G. P. Vorob’ev, and A. K. Zvezdin, Physica B (Amsterdam) 211, 327 (1995).ADSGoogle Scholar
  8. 8.
    A. V. Zalessky, A. A. Frolov, T. A. Khimich, et al., Europhys. Lett. 50, 547 (2000).CrossRefADSGoogle Scholar
  9. 9.
    A. V. Zalesskii, A. K. Zvezdin, A. A. Frolov, and A. A. Bush, Pis’ma Zh. Éksp. Teor. Fiz. 71, 682 (2000) [JETP Lett. 71, 465 (2000)].Google Scholar
  10. 10.
    A. A. Gippius, Doctoral Dissertation in Physics and Mathematics (Mosk. Gos. Univ., Moscow, 2001).Google Scholar
  11. 11.
    M. A. Butler, Int. J. Magn. 4, 131 (1973).MathSciNetGoogle Scholar
  12. 12.
    A. S. Karnachev, Yu. I. Klechin, N. M. Kovtun, et al., Zh. Éksp. Teor. Fiz. 78, 1176 (1980) [Sov. Phys. JETP 51, 592 (1980)].Google Scholar
  13. 13.
    P. Fisher, M. Polomska, I. Sosnowska, and M. Szymanski, J. Phys. C: Sol. St. Phys. 13, 1931 (1980).ADSGoogle Scholar
  14. 14.
    A. J. Jacobson and B. E. F. Fender, J. Phys. C: Sol. St. Phys. 8, 844 (1975).ADSGoogle Scholar
  15. 15.
    E. A. Turov and M. P. Petrov, Nuclear Magnetic Resonance in Ferro-and Antiferromagnets (Nauka, Moscow, 1969; Wiley, New York, 1972).Google Scholar
  16. 16.
    A. I. Popov, G. A. Esina, and A. K. Zvezdin, Fiz. Tverd. Tela (St. Petersburg) 38, 3091 (1996) [Phys. Solid State 38, 1691 (1996)].Google Scholar

Copyright information

© MAIK "Nauka/Interperiodica" 2002

Authors and Affiliations

  • A. V. Zalesskii
    • 1
  • A. A. Frolov
    • 1
  • A. K. Zvezdin
    • 2
  • A. A. Gippius
    • 3
  • E. N. Morozova
    • 3
  • D. F. Khozeevc
    • 3
  • A. S. Bush
    • 4
  • V. S. Pokatilov
    • 4
  1. 1.Shubnikov Institute of CrystallographyRussian Academy of SciencesMoscowRussia
  2. 2.Institute of General PhysicsRussian Academy of SciencesMoscowRussia
  3. 3.Department of PhysicsMoscow State UniversityVorob’evy gory, MoscowRussia
  4. 4.Moscow State Institute of Radio Engineering, Electronics, and Automation (Technical University)MoscowRussia

Personalised recommendations