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High Field ESR Study of the New Low Dimensional S=1/2 System: Cu(NO3)2⋅H2O

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Abstract

Cu(NO3)2⋅H2O is a new S=1/2 system based on transition metal nitrates and contains two-dimensional Cu2+ (S=1/2) layers. We studied single crystalline samples by means of high field (HF) ESR and NMR. Cu2+ HF-ESR and 1H-NMR data reveal pronounced spin-spin correlations at temperatures much higher than the antiferromagnetic ordering temperature T N ∼3.6 K. These observations clearly suggest a two-dimensional character of magnetic interactions in Cu(NO3)2⋅H2O. We discuss the obtained results by considering the possible exchange paths between inequivalent Cu-sites in this compound.

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Authors and Affiliations

  1. Leibniz Institute for Solid State and Materials Research, IFW Dresden, Dresden, Germany

    M. Yehia, E. Vavilova, V. Kataev, R. Klingeler & B. Büchner

  2. Zavoisky Physical Technical Institute, RAS, Kazan, Russia

    E. Vavilova

  3. Institute of Radiotechnics and Electronics, Moscow, Russia

    O. Volkova

  4. Moscow State University, Moscow, Russia

    O. Volkova, E. Lapsheva, V. Shutov, O. Savelieva & A. N. Vasiliev

Authors
  1. M. Yehia
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  2. E. Vavilova
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  3. V. Kataev
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  4. R. Klingeler
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  5. O. Volkova
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  6. E. Lapsheva
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  7. V. Shutov
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  8. O. Savelieva
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  9. A. N. Vasiliev
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  10. B. Büchner
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Corresponding author

Correspondence to M. Yehia.

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Yehia, M., Vavilova, E., Kataev, V. et al. High Field ESR Study of the New Low Dimensional S=1/2 System: Cu(NO3)2⋅H2O. J Low Temp Phys 159, 96–100 (2010). https://doi.org/10.1007/s10909-009-0090-x

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  • DOI: https://doi.org/10.1007/s10909-009-0090-x

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