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.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
F. Kubel and H. Schmid, Acta Crystallogr. B 46, 698 (1990).
I. Sosnowska, T. Peterlin-Neumaier, and E. Steichele, J. Phys. C: Sol. St. Phys. 15, 4835 (1982).
I. Sosnowska and A. K. Zvezdin, J. Magn. Magn. Mat. 140–144, 167 (1995).
M.-M. Tehranchi, N. F. Kubrakov, and A. K. Zvezdin, Ferroelectrics 204, 181 (1997).
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)].
Yu. F. Popov, A. M. Kadomtseva, G. P. Vorob’ev, and A. K. Zvezdin, Ferroelectrics 162, 135 (1994).
A. M. Kadomtseva, Yu. F. Popov, G. P. Vorob’ev, and A. K. Zvezdin, Physica B (Amsterdam) 211, 327 (1995).
A. V. Zalessky, A. A. Frolov, T. A. Khimich, et al., Europhys. Lett. 50, 547 (2000).
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)].
A. A. Gippius, Doctoral Dissertation in Physics and Mathematics (Mosk. Gos. Univ., Moscow, 2001).
M. A. Butler, Int. J. Magn. 4, 131 (1973).
A. S. Karnachev, Yu. I. Klechin, N. M. Kovtun, et al., Zh. Éksp. Teor. Fiz. 78, 1176 (1980) [Sov. Phys. JETP 51, 592 (1980)].
P. Fisher, M. Polomska, I. Sosnowska, and M. Szymanski, J. Phys. C: Sol. St. Phys. 13, 1931 (1980).
A. J. Jacobson and B. E. F. Fender, J. Phys. C: Sol. St. Phys. 8, 844 (1975).
E. A. Turov and M. P. Petrov, Nuclear Magnetic Resonance in Ferro-and Antiferromagnets (Nauka, Moscow, 1969; Wiley, New York, 1972).
A. I. Popov, G. A. Esina, and A. K. Zvezdin, Fiz. Tverd. Tela (St. Petersburg) 38, 3091 (1996) [Phys. Solid State 38, 1691 (1996)].
Author information
Authors and Affiliations
Additional information
__________
Translated from Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 122, No. 1, 2002, pp. 116–121.
Original Russian Text Copyright © 2002 by Zalesski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Frolov, Zvezdin, Gippius, Morozova, Khozeev, Bush, Pokatilov.
Rights and permissions
About this article
Cite this article
Zalesskii, A.V., Frolov, A.A., Zvezdin, A.K. et al. Effect of spatial spin modulation on the relaxation and NMR frequencies of 57Fe nuclei in a ferroelectric antiferromagnet BiFeO3 . J. Exp. Theor. Phys. 95, 101–105 (2002). https://doi.org/10.1134/1.1499907
Received:
Issue Date:
DOI: https://doi.org/10.1134/1.1499907