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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1971-1976 
    ISSN: 0392-6737
    Keywords: Chemical kinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si riportano le osservazioniin situ dell'interazione quadrupolare nucleare di181Ta durante l'elettrointercalazione di 2H-TaS2 con ioni di gadolinio idratati per mezzo di correlazioni angolari differenziali perturbate nel tempo (TDPAC).
    Abstract: Резюме Мы сообщаем о наблюдении181Ta ядерного квадрупольного взаимодействия во время электровключения 2H-TaS2 с гидратированными ионами гадолиния с помощью временных дифференциальных возмущенных угловых корреляций.
    Notes: Summary We report on thein situ observation of the181Ta nuclear quadrupole interaction during electrointercalation of 2H-TaS2 with hydrated gadolinium ions by means of time differential perturbed angular correlations (TDPAC).
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1706-1711 
    ISSN: 0392-6737
    Keywords: Superconducting materials
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si è studiata l'elettrointercalazione dei seguenti ioni metallici idrati in cristalli 2H-TaS2: Na+, K+, Ca2+, Zn2+, Mn2+, La3+, Gd3+, Pr3+. Si trattano studi dilatometriciin situ della reazione e le proprietà superconduttrici di questi composti.
    Abstract: Резюме Иссиедуется злектропрослойка следуюших металлических ионов (Na+, K+, Ca2+, Zn2+, Mn2+, Co3+, Gd3+, Pr3) в монокристаллах 2H-TaS2. Приводятся резулътаты дилатометрических исследований и сверхироводящие свойства зтих соединений.
    Notes: Summary The electrointercalation of the following hydrated metal ions into 2H-TaS2 crystals was investigated: Na+, K+, Ca2+, Zn2+, Mn2+, Co2+, La3+, Gd3+, Pr3+. We report onin situ dilatometric studies of the reaction and on superconducting properties of these compounds.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 254 (1972), S. 312-322 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The temperature dependence of the anisotropy of γ-rays from the decay of oriented183,184Re nuclei situated in an iron matrix was measured between 14 and 33 mK. Magnetic hyperfine splitting constants ofgH HF=5.04(9) × 10−18 erg andgH HF=3.21 (13) × 10−18 erg were determined for the groundstates of183Re and184Re, respectively. With the previously known hyperfinefield of −760(15) kG for Re in iron the followingg-factors were deduced:183Reg=1.32 (5) and184Reg=0.84 (5). The E2/M1 mixing ratio of the 793 keV 2+ −2+ transition in184W was accurately determined to δ (793 keV)=+16.65 (85).
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 350 (1995), S. 311-318 
    ISSN: 1434-601X
    Keywords: 21.10.Ky ; 76.50.Jx ; 76.80.+ y
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report measurements of nuclear magnetic resonance on oriented nuclei (NMR-ON) on94Tc (Iπ=7+,T 1/2=4.9 h),95Tc (I π=9/2+,T 1/2=20 h) and96Tc (I π=7+,T 1/2=4.3 d) in Fe and on95Tc and96Tc in Ni. In order to elucidate the discrepancies on the hyperfine field of TcFe in the literature, the resonances were measured with high precision as a function of the external magnetic field Bext up to 2.0 T. In addition, TDPAC measurements were performed on99TcFe at T=300 K and 13 K. TheT=0 K hyperfine fields of Tc in Fe and Ni were determined to be −314(3) kG and −51.8(5) kG, respectively. The g-factors of93Tc,94Tc,95Tc,96Tc and99Tc(E=181 keV;I π=5/2+) are redetermined as g(93Tc)=1.405(14), g(94Tc)=0.731(7),g(95Tc)=1.321(13), g(96Tc)=0.727(7), g(99Tc)=1.390(17).
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Hyperfine interactions 1 (1975), S. 157-166 
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The quadrupole interaction (QI) at substitutional Ta atoms in a Re matrix has been investigated by TDPAC between 1.2 K and 450 K. It was found to depend only weakly on temperature with a minium around 200 K. No change in the QI was observed when the sample was cooled into the superconducting state. The QI was found to increase with pressure with the coefficient (∂ lnq/∂P)T=+0.93(23)10−3 kbar−1 at 300 K. A discussion of the temperature and pressure variations in connection with published Mössbauer data reveals the role of the conduction electron contribution to the electric field gradient.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Hyperfine interactions 1 (1975), S. 377-380 
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The electric field gradientq acting on181Ta nuclei embedded into Sc, Y, and Lu was found to increase with hydrostatic pressure with relative slopes of (dlnq/dP) T=300K=+8.0(3)10−3 kbar−1, +9.2(6)10−3 kbar−1, +10.2(1.3)10−3 kbar−1 for Sc, Y, and Lu, respectively.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Hyperfine interactions 10 (1981), S. 1043-1049 
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
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  • 8
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Mössbauer experiments with the 90 keV resonance of99Ru as well as PAC measurements using the 353 and 528 keV - 90 keV cascades in99Ru and the 84 keV - 75 keV cascade in100Rh were combined in a study of the hyperfine interactions produced by the hydrogen distribution near Ru, Rh and Pd atoms in Β-PdHx (0.6≲x≲1.0). The electric field gradients produced by the non-cubic nearest neighbour hydrogen distribution were found to be very small. This shows that the protons are very strongly shielded and justifies an interpretation of the Mössbauer spectra in terms of isomer shift distributions only. By combining the two methods one thus can obtain a rather detailed picture of the hydrogen distribution near the probe atoms.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Hyperfine interactions 16 (1983), S. 869-879 
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Three different types of low frequency internal motions in biomolecules are illustrated by representative modern applications of hyperfine spectroscopic techniques: (1) the rotation of aromatic amino acid residues is studied by1H nuclear magnetic resonance via chemical shift averaging; (2) confined diffusion is studied by57Fe Mössbauer-spectroscopy via the variation of the recoilfree fraction and via the appearance of very broad resonance absorption lines; (3) large-scale intramolecular reorientational motion is studied by perturbed angular correlation of γ-rays emitted from radioactive 199mHg labels via the loss of anisotropy.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Hyperfine interactions 16 (1983), S. 925-932 
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report on three examples of in situ studies of solid state reactions by time differential perturbed angular correlation of181Ta: (i) the oxidation of hafnium metal and the doping of ZrS2 with Hf during iodine vapour transport crystal growth; (ii) the observation of sublattice melting during polymorphic phase transitions in TaS2; (iii) the electrointercalation of 2H-TaS2 with silver.
    Type of Medium: Electronic Resource
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