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Two successive magnetic transitions in Y2Cu2O5 studied by μSR

  • Session 2. Magnetism
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Abstract

Zero field muon spin rotation and magnetic susceptibility experiments on investigation of magnetic properties of cuprateY 2Cu2O5 have been performed in the temperature range 4.2–30 K. Transverse fieldμSR-experiments have been also carried out in order to obtain accurate information about transition temperature and to study the influence of the external magnetic field. Our data show that two magnetic phase transitions occur inY 2Cu2O5 with lowering temperature. Upper Neel temperatureT N=13 K is consistent with previous experimental data. We obtained the temperature dependence of the local magnetic field on the muonB μ(T) in the antiferromagnetic phase.B μ(T) reveals a peculiarity (some change of the slope) near the temperatureT N=7.5 K, which can be interpreted as an additional magnetic phase transition caused by a change in magnetic ordering of the copper subsystem. Applying a small external magnetic field 50 Oe leads to smearing of the peculiarity inB μ(T) dependence.

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, P.O. Box 79, 101000, Moscow, Russia

    V. N. Duginov, V. G. Grebinnik, T. N. Mamedov, V. G. Olshevsky, V. Yu. Pomjakushin & V. A. Zhukov

  2. RSC “Kurchatov Institute”, Kurchatov sq. 1, 123182, Moscow, Russia

    B. F. Kirillov, I. A. Krivosheev, A. V. Pirogov & A. N. Ponomarev

  3. Institute of Low Temperature and Structure Research PAS, P.O. Box 937, 50-950, Wroclaw 2, Poland

    R. Horyn, J. Klamut & A. J. Zaleski

Authors
  1. V. N. Duginov
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  2. V. G. Grebinnik
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  3. R. Horyn
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  4. B. F. Kirillov
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  5. J. Klamut
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  6. I. A. Krivosheev
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  7. T. N. Mamedov
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  8. V. G. Olshevsky
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  9. A. V. Pirogov
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  10. V. Yu. Pomjakushin
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  11. A. N. Ponomarev
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  12. A. J. Zaleski
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  13. V. A. Zhukov
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Duginov, V.N., Grebinnik, V.G., Horyn, R. et al. Two successive magnetic transitions in Y2Cu2O5 studied by μSR. Hyperfine Interact 85, 311–316 (1994). https://doi.org/10.1007/BF02069440

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  • DOI: https://doi.org/10.1007/BF02069440

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