Theory of Magnetic Mössbauer Diffraction Measurement

Belyakov, V. A.; Ajvazian, Yu. M.

doi:10.1103/physrevb.1.1903

Cited by 6 publications

(1 citation statement)

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“…Although primarily "curiosities" for chemists, two other developments should be noted. A number of theoretical and experimental treatments have appeared on the subjects of Mossbauer scattering at the Bragg angle (10,65,339,648,650,651,719) and interferen e between nuclear resonance absorption, followed by internal conversion, and photoelectric absorption (5, 324. 391, 487, 507,659).…”

Section: Recent Developmentsmentioning

confidence: 99%

Moessbauer spectrometry

Stevens¹,

Travis²,

DeVoe³

1972

Anal. Chem.

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Section: Recent Developmentsmentioning

confidence: 99%

Moessbauer spectrometry

Stevens¹,

Travis²,

DeVoe³

1972

Anal. Chem.

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Evolution of the Mössbauer Spectrum of the Bragg Reflection with Increasing Crystal Thickness Kinematic Theory of Diffraction

Andreeva

Kuz’min

1975

Physica Status Solidi (b)

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h mcent years the possibility of magnetic and electric structure investigations and a h 1 direct phase determination has been discussed in the literature by means of ffB€&atsbauerographyll (I to 3). But in those papers it was supposed that the shape and the azimuthal dependence of the Bragg reflection Mossbauer spectrum were determined d y by the energy dependence of the squared structural amplitude modulus 1 FG0-cf)l '. It is clear, however, that for thick crystals the absorption of the resonant radiation inside the crystal must disturb the spectrum of the diffracted radiation because nf its own energy dependences. Notice also that the absorption in the presence of the h.f. (hyperfine) splittings will be not only a geometrical factor, a s it takes place in the kinematic theory of X-ray diffraction, but will depend upon the h.f. axes orientation. Moreover, a s the polarization of the radiation changes as it penetrates into the oriented monocrystal the absorption m a y be not considered as independent factor altering the Bragg intensity. The absorption in the kinematic theory of the Mossbauer diffraction in the presence of h . f . splittings was taken into account only by Chukhovskii and Perstnev (4).In this paper we intend to appreciate the role of absorption in the kinematic theory of Mossbauer diffraction in the presence of h.f. splittings and to investigate the ranges of applicability of the approximation of "thin" and "thick" crystals. F o r this sake we calculated the evolution of the "magnetic" Mossbauer spectrum of the Bragg reflection with the increase of crystal thickness. In our theory of absorption we used the absorption matrix introduced by Blume and Kistner (5): e them as %(z)), where k' is the wave vector (I k I = 2~/ h ) , z is the path of the radiation in the crystal, n is a complex 2x2 matrix of the refraction index. The matrix inkz (we denote *

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Diffraction of Mössbauer Radiation in Magnetically Ordered Crystals

Belyakov

1992

Partially Ordered Systems

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Theory of Magnetic Mössbauer Diffraction Measurement

Cited by 6 publications

References 6 publications

Moessbauer spectrometry

Moessbauer spectrometry

Evolution of the Mössbauer Spectrum of the Bragg Reflection with Increasing Crystal Thickness Kinematic Theory of Diffraction

Diffraction of Mössbauer Radiation in Magnetically Ordered Crystals

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