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  • 2005-2009  (1)
  • 1995-1999  (12)
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  • 1
    Electronic Resource
    Electronic Resource
    Conversion electron Mössbauer study of short range ordering in electrochemically deposited Fe−Ni−Cr alloys (1995)
    Springer
    Journal of radioanalytical and nuclear chemistry 190 (1995), S. 327-332 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract 57Fe Conversion electron Mössbauer spectroscopy, X-ray diffractometry and electron microprobe measurements were performed on Fe−Ni−Cr alloys coatings electrochemically deposited at different times (from 1 to 29 minutes). Significant differences have been found among the Mössbauer spectra of samples examined. The changes are also reflected by the hyperfine field distribution derived from the spectra. The observed changes can be associated with changes in the magnetic anisotropy and in the short range ordering in correlated to the duration of electrochemical deposition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02040008
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    User-friendly software for Mössbauer spectrum analysis (1996)
    Springer
    Journal of radioanalytical and nuclear chemistry 210 (1996), S. 105-118 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A new user-friendly software for analysis of Mössbauer-spectra has been developed. The program makes use of the advantages provided by the current generation of fast personal computers. An Evolution Algorithm1,2 is used for global search of Mössbauer parameters in order to enhance the reliability of the obtained results. Fitting of Lorentzians, Pseudo-Voigt line profiles, and deriving hyperfine-field distributions including correlations and combinations and Mössbauer Line Sharpening by Fourier transformation provide a wide range of applicability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02055410
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Coordination sphere symmetry of di-n-butyltin(IV) complexes containing ligands with {O,O} donor atoms (1998)
    Springer
    Journal of radioanalytical and nuclear chemistry 232 (1998), S. 151-158 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Eight di-n-butyltin(IV) complexes with glycolic, 2-hydroxy-propionic, succinic and malic acids, have been prepared by two different procedures. The compounds were characterised by elemental analysis, FTIR, Raman and119Sn Mössbauer spectroscopy. The IR and Raman data indicated the presence of bidentate and/or monodentate carboxylate groups, non linear C−Sn−C bonds, and Sn−O bonds within the complexes. The results of Mössbauer spectroscopic measurements, based on point-charge model calculations, have shown the occurrence of trigonal bipyramidal environment in the central tin(IV) atom, besides the octahedral and tetrahedral structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02383732
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    151Eu and57Fe Mössbauer and X-ray diffraction study of high temperature Tl-containing superconductor (1995)
    Springer
    Journal of radioanalytical and nuclear chemistry 190 (1995), S. 401-405 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract 57Fe and151Eu Mössbauer spectroscopy and X-ray diffractometry measurements were performed with europium and iron containing Tl2(Ca0.8Eu0.2)Ba2(Cu0.98Fe0.02)2O8 and EuBa2Cu3O7-d high temperature superconductor samples in order to study the effect of europium incorporated in a Tl-containing high temperature superconductor. Significant differences have been found between the57Fe Mössbauer spectra of Tl-containing samples with and without Eu or between the151Eu Mössbauer spectra of Tl-containing and 1-2-3 type superconductors. The results can be interpreted by assuming that Eu can be localized at the Ca site in the Tl-containing superconductor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02040018
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Nuclear techniques in structural chemistry (1996)
    Springer
    Journal of radioanalytical and nuclear chemistry 203 (1996), S. 399-412 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The discovery of radioactivity started the nuclear research. The nuclear techniques are very powerful tools in structural chemistry, as well. We would like to support this statement by two examples in this paper. We present a series of Mössbauer measurements which give information about the coordination structure of some dibutyltin (IV) complexes of carbohydrate derivates. The other example will demonstrate how the positron lifetime spectra can reflect the temperature dependence of water structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02041519
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  • 6
    Electronic Resource
    Electronic Resource
    Structural investigation of dibenzyltin(IV) complexes of carbohydrates (1995)
    Springer
    Journal of radioanalytical and nuclear chemistry 189 (1995), S. 237-245 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Dibenzyltin(IV) complexes of carbohydrate derivatives were prepared and studied by Mössbauer and FTIR spectroscopy and by thermogravimetry. The Mössbauer studies indicated that the reaction between dibenzyltin(IV)-dichloride and sugar-type ligands led to reaction products containing tin(IV)-oxide. beside the dibenzyltin(IV) sugar complex. These two type of species were shown to be in weak interaction. Comparison of the experimental quadrupole splitting values with those calculated on the basis of the partial quadrupole splitting concept revealed the steric arrangements of the coordination sphere of tin(IV) in the sugar complexes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02042602
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Structural modification of silica-containing α-zirconium phosphate (1995)
    Springer
    Journal of radioanalytical and nuclear chemistry 200 (1995), S. 159-167 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Silica-containing α-zirconium phosphate (α-ZrSiP) was prepared by the precipitation method. X-ray diffractometry was used to characterize α-ZrSiP and to compare it with other α-zirconium phosphates (ZrP). A monoclinic cell with parameters of a=0.9038 nm, b=0.529 nm, c=1.4183 nm and β=91.76° was identified for α-ZrSiP, i.e. silica modifies the original α-ZrP structure. The specific surface area of α-ZrSiP was found to be two orders of magnitude higher then that of α-ZrP.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02163685
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  • 8
    Electronic Resource
    Electronic Resource
    Mössbauer characterization of tin triflate Sn(OTf)2 (1997)
    Springer
    Journal of radioanalytical and nuclear chemistry 220 (1997), S. 103-104 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract 151Sn Mössbauer spectroscopy was performed with tin triflate Sn(OTf)2 in order to determine its Mösbauer parameters for analytical purposes. The typical Mössbauer parameters at 80 K for crystalline Sn(OTf)2 are IS=4.01±0.02 mm/s and QS=1.20±0.04 mm/s and show that the stannous ion is at a site with less than cubic symmetry under perturbation of the crystal field effect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02035357
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Mössbauer and X-ray diffraction study of isothermal ageing effect at 500°C in electrochemically deposited Fe−Ni−Cr alloys (1999)
    Springer
    Journal of radioanalytical and nuclear chemistry 240 (1999), S. 789-792 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Mössbauer spectroscopy, X-ray diffractometry and microprobe analysis were used to study electrodeposited Fe−Ni−Cr (40–50% Fe, 40–47% Ni, 3–5% Cr) alloys isothermally aged at 500°C from 5 minutes to 100 hours in an inert argon gas atmosphere. The main phase of the as-deposited samples exhibits ferromagnetic microcrystalline behavior, whereas the thermally prepared samples of same composition are always paramagnetic. The dominant effect of ageing is an oxidation process which resulted in the formation of hematite and magnetite iron oxides in considerable amounts and which are attributable to the presence of oxygen inclusions in the as-electrodeposited samples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02349853
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  • 10
    Electronic Resource
    Electronic Resource
    Effects of side-chains ofN-acetylamino acids on the structures of their triphenyltin(IV) complexes (1999)
    Springer
    Journal of radioanalytical and nuclear chemistry 241 (1999), S. 313-322 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Triphenyltin(IV) complexes ofN-acetylglycine,N-acetyl-L-leucine,N-acetyl-L-asparagine andN-acetyl-L-tyrosine were prepared by two methods and characterized by means of different spectroscopic methods (FTIR, multinuclear,1H,13C and119Sn NMR and119Sn Mössbauer). The spectroscopic data indicated that theN-acetylglycine complex adopts a trigonal-bipyramidal structure in which the monodentate carboxylate and the amide-C=O group are bound to the same organotin(IV) moiety. The other three complexes are linear oligomers in which the planar Ph3Sn(IV) is coordinated axially by a monodentate carboxylate and an amide-C=O from two different ligands. At theC-terminal end of the oligomer chain there is a tetracoordinated tin(IV) with a monodentate carboxylate as donor group.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02347467
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    Paper (German National Licenses)
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