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Magnetic structure of the Sr2Cu3O4Cl2 two-subsystem antiferromagnet according to nuclear quadrupole resonance data

  • Low-Temperature Solid-State Physics
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Abstract

The magnetic structure of the Sr2Cu3O4Cl2 two-subsystem antiferromagnet is studied by the nuclear quadrupole resonance (NQR) method on the 63, 65Cu and 35Cl nuclei. The resonance spectrum above T N2 = 40 K is determined by the Zeeman splitting of the levels of the 63, 65Cu nuclei of the copper atoms at the Cu1 site with the first-order quadrupole perturbation. The magnetic field on the copper nuclei is equal to 93 kOe. The spectrum below n is significantly different: it includes a low-frequency part, which is associated with the ordering of the second magnetic subsystem Cu2. The splitting of the NQR lines of 35Cl is observed above and below T N2. This fact indicates the ferromagnetic ordering of the moments of the Cu1 subsystem, which are located along the c axis of the crystal, and makes it possible to determine the direction of the magnetic field on Cu1 copper as (110).

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Authors and Affiliations

  1. Moscow State University, Moscow, 119992, Russia

    A. A. Gippius, E. N. Morozova & K. S. Okhotnikov

  2. Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskiĭ pr. 59, Moscow, 119333, Russia

    A. A. Gippius, E. N. Morozova & E. A. Alkaev

Authors
  1. A. A. Gippius
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  2. E. N. Morozova
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  3. K. S. Okhotnikov
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  4. E. A. Alkaev
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Original Russian Text © A.A. Gippius, E.N. Morozova, K.S. Okhotnikov, E.A. Alkaev, 2007, published in Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2007, Vol. 132, No. 1, pp. 37–39.

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Gippius, A.A., Morozova, E.N., Okhotnikov, K.S. et al. Magnetic structure of the Sr2Cu3O4Cl2 two-subsystem antiferromagnet according to nuclear quadrupole resonance data. J. Exp. Theor. Phys. 105, 27–29 (2007). https://doi.org/10.1134/S1063776107070072

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  • DOI: https://doi.org/10.1134/S1063776107070072

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