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  • 1
    Electronic Resource
    Electronic Resource
    Hyperfeinstruktur im HolmiumÄthylsulfat (1967)
    Springer
    The European physical journal 203 (1967), S. 227-234 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In holmium ethylsulfate diluted with lanthanum ethylsulfate we have investigated the transition5 I 8→F 5 at 4,2
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01325914
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  • 2
    Electronic Resource
    Electronic Resource
    Optical investigation of ErFeO3 (1967)
    Springer
    The European physical journal 204 (1967), S. 101-113 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The absorption spectrum of single crystals of ErFeO3 has been investigated in the red and near infrared spectral region in the temperature range between 1.2 °K and 4.2 °K and at 20 °K and 77 °K. Between 77 °K and 4.2 °K a constant splitting of the absorption lines is observed. Below the Néel-temperature of the erbium sublattice at 4.5 °K the splitting of the absorption lines increases; the saturation value extrapolated to 0 °K of the splitting of the lowest crystal field level of the4 I 15/2 groundterm is (6.08±0.30) cm−1. By measuring the Zeeman effect the groundstate magnetic moment is determined asμ=(6.6±0.2)μ B. The measured temperature dependence of the splitting of the lowest crystalfield level of the4I15/2 groundterm is compared with that calculated by a Monte Carlo method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01326125
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  • 3
    Electronic Resource
    Electronic Resource
    Isomerieverschiebungen der 81 keV γ-Linie des133Cs (1968)
    Springer
    The European physical journal 209 (1968), S. 33-43 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Isomer shifts of the 81.0 keVγ-transition in133Cs have been measured by the Mössbauer technique for eight ionic Cs compounds, and for the intermetallic compound CsBi2. The source was133Ba in CaF2. The shifts, relative to CsCl, range from −1.4 · 10−8 eV for CsNO3 to +1.6 · 10−8 eV for CsBi2. The difference in electron density at the Cs nucleus between CsBi2 and CsNO3 is discussed using chemical bonding arguments. For the Cs halides, this difference is estimated from the overlap of outer electron shells in the lattices. A relative change of the mean square charge radiusδ〈r 2〉/〈r 2〉=+2 · 10−4 is derived.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01379789
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  • 4
    Electronic Resource
    Electronic Resource
    Hyperfine fields on Hafnium nuclei in iron and gadolinium metal (1969)
    Springer
    The European physical journal 226 (1969), S. 175-181 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The recoil implanation perturbed angular correlation technique, IMPACT, has been used to study the hyperfine interaction in180Hf in iron and gadolinium. The perturbed angular correlation through the Coulomb excited 4+ state was used, thus minimizing the effect of quadrupole interactions. The effective hyperfine fields on Hf in iron and gadolinium are determined to have the same sign,negative, and magnitudes of (507±60) kOe and (304±31) kOe, respectively. Results are compared with values reported from several other experiments ostensibly measuring the same quantity. Problems inherent in the various experimental techniques are considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01392020
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  • 5
    Electronic Resource
    Electronic Resource
    Hyperfine structure in holmium ethylsulfate and holmium trichloride (1970)
    Springer
    The European physical journal 231 (1970), S. 377-396 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01397519
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  • 6
    Electronic Resource
    Electronic Resource
    Isomerieverschiebung im Eu151 (1965)
    Springer
    The European physical journal 187 (1965), S. 67-84 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The isomer shift of the 21.7 keVγ transition in Eu151 has been studied for various divalent and trivalent europium compounds using the Mössbauer technique. Theγ energy is lower by up to 1.1·10−6 eV in divalent compounds than in trivalent compounds. Using data from atomic spectroscopy it is estimated that the electron density at the nucleus is larger by about 1.9·1026cm−3 for the configuration 4f 6 than for 4f 7 due to different shielding of thes 2 shells. The difference of the mean square radii of the 21.7 keV state and the ground state is thenδ〈r2〉=+0.03 fm2. The measured isomer shift between trivalent and metallic europium and the relatives-electron densities in the rare earth metals measured by the positron annihilation rates are used to establish a calibration scheme for isomer shifts in rare earth metals. This calibration scheme is used to deduce a changeδ〈r 2〉=+0.0055 fm2 between the 26 keV state and the ground state of Dy161.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01380906
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  • 7
    Electronic Resource
    Electronic Resource
    Optical investigation of metamagnetic DyAlO3 (1969)
    Springer
    The European physical journal 222 (1969), S. 105-127 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have investigated the optical absorption spectra of metamagnetic DyAlO3 (T N =3.4 °K) above and below the Néel temperature. We find that the magnetic interactions are predominantly between the ions along the crystallographicc-axis; the interaction energy between two ions isW C =− (2.9±0.6) cm−1. Additional line-shifts below 3.4 °K yield the Néel temperature. Zeeman effect studies give the magnetic moment of the groundstate as μ=(9.2 ± 0.9)μ B . The direction of the magnetic moments is in thea-b plane, with angles of ± 33.5° and ± 146.5° from theb-axis. The Zeeman effect studies reveal two metamagnetic transitions (forH ext∥μ) at 7.0 and 7.3 kOe respectively. Additional susceptibility and Mössbauer measurements confirm the Néel temperature and the magnetic moment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01392289
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  • 8
    Electronic Resource
    Electronic Resource
    Optical spectroscopy of Dysprosium Aluminum Garnet (DAG) (1969)
    Springer
    The European physical journal 228 (1969), S. 235-253 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The absorption spectrum of antiferromagnetic dysprosium aluminium garnet (DAG) (T N =2.50 °K) has been investigated at low temperatures. The groundstate splitting due to all interactions in the antiferromagnetic state is (5.27±0.10) cm−1 extrapolated to 0 °K. The temperature dependence of the lineshift of the absorption lines is measured. Zeeman effect studies give theg-tensor of the groundstate asg z =18.4±0.5,g x =g y =0.5±0.2. The studies also allow the determination of the critical fields asH c [100] =(5.0±0.1) koe,H c [111] =(3.9±0.2) koe andH c [110] =(4.9±0.6) koe. In addition an investigation of a number of satellite lines is performed. Some of them can be interpreted as spin wave sidebands (Stokes and anti-Stokes); others obviously come from dysprosium ions which have impurity ions on regular lattice sites as neighbours.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01392130
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  • 9
    Electronic Resource
    Electronic Resource
    Photoemissionsspektroskopie in Chemie und Physik (1981)
    Springer
    Naturwissenschaften 68 (1981), S. 360-370 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Notes: Abstract The principles of photoemission spectroscopy and of its application to problems in chemistry and physics are discussed. Examples will be presented for atoms, molecules, solids and surfaces. The following topics will be discussed: binding energies of core levels (rare gases), binding energies of valence levels (CO), analysis of a valence band spectrum in terms of MO-calculations (C6H6), core polarization (O2), chemical shift (O), plasmon excitations (Be-metal), energy dispersion relations for a solid (Cu), exchange splitting in a metal (Ni), surface states (Si), energy levels of adsorbates (Ni on Au, C6H6 on Ni).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01058025
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  • 10
    Electronic Resource
    Electronic Resource
    Fluoreszenzlebensdauern von Terbium- und Europiumsalzen (1961)
    Springer
    Naturwissenschaften 48 (1961), S. 713-713 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620953
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