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  • 1
    Electronic Resource
    Electronic Resource
    On the texture in diffusion-grown layers of silicides and germanides with the FeB structure, MeX (Me=Ti, Zr; X=Si, Ge) or the ZrSi2 structure (ZrSi2, HfSi2, ZrGe2) (1984)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 17 (1984), S. 103-110 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: In diffusion-grown layers of compounds with the orthorhombic FeB- and ZrSi2-type structures a pronounced texture is present which is rotationally symmetric with respect to the direction of diffusion. In FeB-type structures a [101]-fibre texture is observed for ZrSi and HfSi and a [100]-fan texture for TiSi and ZrGe. In ZrSi2-type compounds the b axis is always perpendicular to the direction of diffusion; different compounds, however, show different textures: a [010]-fan texture for ZrSi2, a [100]-fibre texture for HfSi2 and a 〈101〉-fibre texture for ZrGe2. The textures are explained in terms of preferential diffusion along specific crystallographic directions which can be derived from the crystal structures. At high temperatures a second texture component has been observed in HfSi layers and in layers with the ZrSi2 structure. This second component can be considered as a recrystallization texture and can be derived from the original texture by a rotation of the crystallites of 20–25° around a simple crystallographic direction. The existence of a so-called TiGe phase with the FeB structure in the temperature region 1070–1270 K is questionable. Only Ti6Ge5 has been produced and this compound showed a [001]-fibre texture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889884011079
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  • 2
    Electronic Resource
    Electronic Resource
    On the layer sequence and morphology in solid-state displacement reactions (1984)
    Springer
    Oxidation of metals 22 (1984), S. 161-180 
    Details
    ISSN: 1573-4889
    Keywords: displacement reactions ; ternary diffusion ; multiphase diffusion ; diffusion path ; Ni-Cu-O ; Co-Cu-O ; Fe-Ni-O ; Fe-Cu-O ; Cu-Ni-S ; Fe-Ni-S ; Cr-Ni-S
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract In displacement reactions of the type pA+BqX→qB+ApX, two main forms of the layer sequence have been found in the reaction layer, namely, A/ApX/B/BqX and A/B/ApX/BqX. In this paper it is argued that the thermodynamics of the system, more specifically the dependence of the activity of element X on the mole ratio between the elements A and B, determines the initial layer sequence. Various morphological variants of the two basic types may develop because of the kinetics. The prediction of the layer sequence and morphology made on the basis of this theory has been verified on a number of oxidic and sulfidic systems. It is, however, pointed out that these predictions also can be applied to purely metallic ternary systems and to other types of reactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00656903
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  • 3
    Electronic Resource
    Electronic Resource
    g-Factor of theT 1/2=35 ns isomeric state in154Er (1983)
    Springer
    The European physical journal 309 (1983), S. 207-212 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The reaction32S+126Te has been used to determine theg-factor of theT 1/2=35 ns yrast isomeric state in154Er through the time-differential spin-rotation method. The experimental valueg=+0.017±0.003 agrees with an aligned two-neutron ν(i13/2,h9/2) main configuration and supports an 11− spin-parity assignment for the isomeric state. Unambiguous spin-parity assignment for upper energy yrast states can be deduced. The properties of the isomeric state are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01413751
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  • 4
    Electronic Resource
    Electronic Resource
    The g-factor of the Jπ=12+ isomeric state in188Hg (1983)
    Springer
    The European physical journal 313 (1983), S. 289-292 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using the reaction175Lu(19F, 6n) theg-factor of the188Hg isomeric state (J π=12+,T 1/2=135 ns) has been measured with the TDPAD method. The experimental value g=−0.168(10) supports the interpretation of an almost pure (vi13/2)−2 configuration for this isomer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01439480
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  • 5
    Electronic Resource
    Electronic Resource
    High spin states in153Er (1982)
    Springer
    The European physical journal 305 (1982), S. 81-85 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High spin states in153Er have been populated in the144Sm(12C, 3n)133Er reaction. Excitation functions, lifetimes, angular distributions,γ-γ coincidences and internal conversion coefficients were measured. Three isomeric states at 2.75 MeV (T 1/2=400 ns), 2.95 MeV (T 1/2∼10 ns) and 5.2 MeV (T 1/2=200 ns) have been observed. A fourth isomer seems to be weakly excited above 6.8 MeV. The level scheme proposed is discussed in term of the nuclear shell model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01415083
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  • 6
    Electronic Resource
    Electronic Resource
    High-spin structure in154Er (1984)
    Springer
    The European physical journal 319 (1984), S. 119-132 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High spin states in the nucleus154Er have been reinvestigated using the123Sb(35Cl, 4n) reaction and a variety of spectroscopic techniques including excitation functions,γ-γ coincidences,γ angular distribution and linear polarization measurements. From the measured energies, relative intensities and transition multipolarities a new level scheme has been deduced up to an excitation energy of ∼12 MeV and spin 36. An interpretation of the experimental results is given in terms of the deformed Woods-Saxon orbitals. Gigantic backbending (superdeformation) effect is studied theoretically within the cranking model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01415624
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Evaluation of the use of Gaussian φ(ρz) curves in quantitative electron probe microanalysis: A new optimization (1984)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 13 (1984), S. 91-97 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: A computer program based on the use of Gaussian expressions for the x-ray distribution with depth [φ(ρz)curves] was tested on its usefulness for quantitative electron probe microanalysis. As the good results originally claimed for a similar program could not be reproduced initially, it was subjected to a detailed analysis. As a result, some modifications in the approach are proposed. Apart from increasing the speed of calculation considerably, the modified expressions provide a better insight into the delicate balance which has to exit between the relevant quantities involved. After a new optimization process the modified program was tested on about 450 published microanalyses. The results show that the φ(ρz) approach is indeed very promising as a narrow histogram with an r. m. s. value of 5. 4% could be produced. Finally, some suggestions are made for future improvements.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300130211
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