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Mössbauer Investigation of the Single Crystal and Powder Sample of Barium Nitroprusside Ba[Fe(CN)5NO]⋅3H2O (BNP)

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Abstract

Angle-dependent Mössbauer investigation on single crystals of barium nitroprosside (BNP) using a-, b- and c-crystal cuts has been performed. The EFG tensor has been fully determined by the orientation between the main EFG component V ZZ and the b-crystal axis (α=±6(2)°) and by the asymmetry parameter (η=0.04(2)). Mössbauer spectra of powder samples have been recorded at 293 K and at liquid helium temperature in an external magnetic field. In spite of the negligible Goldanskii-Karyagin effect observed in the powder sample a remarkable vibrational anisotropy was found in the crystal. The Lamb–Mössbauer factors along the main crystallographic directions are: f LM (a)=0.36(1); f LM (b)=0.23(1) and f LM (c)=0.50(1). The relative orientation of the main component of the MSD tensor with respect to the b-crystal axis is ω=±36(5)°.

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Authors and Affiliations

  1. Department of Atomic Physics, University of Sofia, Faculty of Physics, 5 James Baurchier Blvd, 1126, Sofia, Bulgaria

    Sv. Stankov, V. Rusanov & V. Angelov

  2. Institut für Kristallographie, Universität zu Köln, Zülpicher Strasse 49b, D-50674, Köln, Germany

    S. Haussühl

  3. Institut für Physik, Universität zu Lübeck, Ratzeburger Allee 160, D-23538, Lübeck, Germany

    A. X. Trautwein

Authors
  1. Sv. Stankov
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  2. V. Rusanov
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  3. V. Angelov
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  4. S. Haussühl
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  5. A. X. Trautwein
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Stankov, S., Rusanov, V., Angelov, V. et al. Mössbauer Investigation of the Single Crystal and Powder Sample of Barium Nitroprusside Ba[Fe(CN)5NO]⋅3H2O (BNP). Hyperfine Interactions 141, 223–229 (2002). https://doi.org/10.1023/A:1021239027735

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