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

doi:10.1023/A:1021239027735

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

^*Korrespondierende/r Autor/-in für diese Arbeit

Institut für Physik

5 Zitate (Scopus)

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)°.

Originalsprache	Englisch
Zeitschrift	Hyperfine Interactions
Jahrgang	141-142
Ausgabenummer	1-4
Seiten (von - bis)	223-229
Seitenumfang	7
ISSN	0304-3843
DOIs	https://doi.org/10.1023/A:1021239027735
Publikationsstatus	Veröffentlicht - 28.06.2002

Fördermittel

Sv. Stankov is very much indebted to the DAAD for the provided Research Fellow Grant. V. Rusanov gratefully acknowledges the support by the German Research Foundation (DFG) and the Alexander von Humboldt Foundation. We thank Dr. Ivan Mandjukov for the technical assistance with the macrophotography.

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10.1023/A:1021239027735

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title = "M{\"o}ssbauer Investigation of the Single Crystal and Powder Sample of Barium Nitroprusside Ba[Fe(CN)5NO]⋅3H2O (BNP)",

abstract = "Angle-dependent M{\"o}ssbauer 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 VZZ and the b-crystal axis (α=±6(2)°) and by the asymmetry parameter (η=0.04(2)). M{\"o}ssbauer 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–M{\"o}ssbauer factors along the main crystallographic directions are: fLM(a)=0.36(1); fLM(b)=0.23(1) and fLM(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)°.",

author = "Sv Stankov and V. Rusanov and V. Angelov and S. Hauss{\"u}hl and Trautwein, \{A. X.\}",

year = "2002",

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T1 - Mössbauer Investigation of the Single Crystal and Powder Sample of Barium Nitroprusside Ba[Fe(CN)5NO]⋅3H2O (BNP)

AU - Stankov, Sv

AU - Rusanov, V.

AU - Angelov, V.

AU - Haussühl, S.

AU - Trautwein, A. X.

PY - 2002/6/28

Y1 - 2002/6/28

N2 - 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 VZZ 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: fLM(a)=0.36(1); fLM(b)=0.23(1) and fLM(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)°.

AB - 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 VZZ 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: fLM(a)=0.36(1); fLM(b)=0.23(1) and fLM(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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