On the validity of 57Fe hyperfine field distribution calculations from Mössbauer spectra of magnetic amorphous alloys

doi:10.1016/0168-583X(84)90565-2

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

Volume 5, Issue 1, September–October 1984, Pages 25-33

https://doi.org/10.1016/0168-583X(84)90565-2 Get rights and content

Abstract

The approximations which are made in ⁵⁷Fe hyperfine field distribution calculations from magnetic amorphous alloys are discussed. A diagram which gives an immediate indication of the validity of a given hyperfine field distribution obtained using first order perturbation theory is proposed. The assumption about the distribution of the polar angles of the hyperfine field direction with respect to the EFG principal axes in transition metal-metalloid amorphous alloys is discussed. The asymmetries of the Mössbauer spectra of the latter alloys are also considered.

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Citation Excerpt :
Line positions and line widths measured with unpolarized radiation have been analysed up to the second-order perturbation theory [56–58]. Series expansions obtained under assumption of the random distribution of the EFG and uniform hyperfine field were presented in [51,53–55]. Polarized, resonance radiation can be obtained by separation of the nuclear transitions corresponding to the different hyperfine levels.
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On the validity of 57Fe hyperfine field distribution calculations from Mössbauer spectra of magnetic amorphous alloys

Abstract

Solid State Commun.

Nucl. Instr. and Meth.

Solid State Commun.

J. Phys. Chem. Solids

Méthodes de résolution des problèmes mal poses

J. Phys. E

Phys. Stat. Sol. (b)

J. Phys. E

J. Phys. E

J. Phys. E

J. Appl. Phys.

J. Physique

Phys. Stat. Sol. (a)

Hyperfine Interact

J. Phys. F

Phys. Rev. B

On the validity of ^57Fe hyperfine field distribution calculations from Mössbauer spectra of magnetic amorphous alloys