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Hyperfine Interactions

, Volume 141, Issue 1–4, pp 223–229 | Cite as

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

  • Sv. Stankov
  • V. Rusanov
  • V. Angelov
  • S. Haussühl
  • A. X. Trautwein
Article

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)°.

barium nitroprusside Goldanskii–Karyagin effect vibrational anisotropy texture 

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Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • Sv. Stankov
    • 1
  • V. Rusanov
    • 1
  • V. Angelov
    • 1
  • S. Haussühl
    • 2
  • A. X. Trautwein
    • 3
  1. 1.Department of Atomic PhysicsUniversity of Sofia, Faculty of PhysicsSofiaBulgaria
  2. 2.Institut für KristallographieUniversität zu KölnKölnGermany
  3. 3.Institut für PhysikUniversität zu LübeckLübeckGermany

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