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  • 1
    Electronic Resource
    Electronic Resource
    Investigation of a silicon single crystal by means of the diffraction of Mössbauer radiation (1984)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 40 (1984), S. 459-465 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Diffraction experiments with resonant γ-radiation were performed on a single crystal of silicon at room temperature. The high energy resolution of the Mössbauer effect was used to separate elastically and inelastically scattered radiation. A special experimental setup is described, which in addition allows the determination of the total thermal diffuse scattered intensity. Inelastically scattered radiation was observed in the whole investigated angular range. In the vicinity of Bragg reflections the ratio of the integrated intensities of inelastically to elastically scattered radiation was in very good agreement with the results of calculations using different computer programs based on first-order thermal diffuse scattering theory for a wide range of chosen scan lengths. The measured ratios of the elastically scattered radiation of different Bragg reflections were used to determine the temperature factor B.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767384000891
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Separation of elastically and inelastically scattered γ-radiation from LiNbO3 by Mössbauer diffraction (1984)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 40 (1984), S. 465-468 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Mössbauer diffraction experiments have been performed on a LiNbO3 single crystal at room temperature for scattering angles between 14.5 and 40.5°. A large contribution of inelastically scattered intensity was detectable for all scattering angles. Radiation damage caused by the high-energy components of the radiation emitted by the 57Co Mössbauer source was observed. An attempt was made to estimate the temperature factor B from the measured inelastically scattered radiation assuming that first- order thermal diffuse scattering (TDS) is dominant. Both the TDS contribution to the integrated intensity within the Bragg peak and the ratio of the integrated first-order TDS included in the Bragg peak to that included in the background were calculated with various programs from the elastic constants and compared with the experimental values.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767384000908
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Ferroelectric phase transition in Li2Ge7O15 investigated by Mössbauer diffraction (1993)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 49 (1993), S. 198-202 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Mössbauer diffraction experiments were performed on a single crystal of lithium heptagermanate in the temperature range 250–350 K. The high energy resolution of resonant γ radiation was used to separate elastically and inelastically scattered components. A lattice expansion along c and a decrease of the intensity of the elastically scattered radiation (IBragg) connected with an increase of the intensity of the inelastically scattered radiation (ITDS) are observed at the transition from the para- to the ferroelectric phase at 283.5 K. The experimentally determined maximum of ITDS/lBragg appearing at the phase transition is much more pronounced in comparison with that predicted from TDS-correction programs, which are based on the lattice dynamical theory restricted to acoustic phonons only.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767392008067
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Magnetic investigations of pseudobinary SE (Fe, Al)"2 systems (SE = Y, Gd, Dy, Ho)
    Amsterdam : Elsevier
    Journal of Magnetism and Magnetic Materials 2 (1975), S. 196-202 
    Details
    ISSN: 0304-8853
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0304-8853(75)90122-5
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  • 5
    Electronic Resource
    Electronic Resource
    Mössbauer diffraction on ferroelectric Li2Ge7O15 (1986)
    Springer
    Hyperfine interactions 29 (1986), S. 1351-1353 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Room temperature Mössbauer diffraction experiments on Li2Ge7O15 are reported. Due to the presence of additional lattice points near the surface of the Ewald sphere of the used geometry a minimum appears in the inelastically scattered contribution of the 0-0-8 reflection. No elastically scattered intensity is observed at the angular range corresponding to the 0-0-9 reflection supporting Pbcn as space group at room temperature. The calculated ratio of the first order thermal diffuse scattered intensity included, in the background to the total thermal diffuse scattered intensity differs strongly from the experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02399484
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    Paper (German National Licenses)
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