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  1. No Access

    Article

    On the observation of intrinsic defects in (Co1-xInx)1-δO by PAC

    We report on the results of Perturbed Angular Correlation measurements in polycrystalline (Co1-xInx)1-δO samples (x = 0.04 and 0.8 at.%) using ion-implanted 111In tracers. The temperature and the oxygen activity ...

    T. Wenzel, F. Lange, K.P. Lieb, M. Martin, H. Schmalzried… in Hyperfine Interactions (1999)

  2. No Access

    Article

    Adsorbate-induced transition between different mechanisms of laser-stimulated desorption

    were measured as a function of laser fluence, number of laser pulses, and oxygen exposure. If the laser fluence exceeds 10 mJ/cm2 desorption from clean particles occurs as a thermal reaction. Oxygen exposure as ...

    F. Stietz, T.A. Vartanyan, J. Viereck, T. Wenzel, F. Träger in Applied Physics A (1998)

  3. No Access

    Article

    A simple six-input multichannel system for Mössbauer spectroscopy

    A multichannel system for Mössbauer spectroscopy was developed and is presented. The system, constructed as an NIM module, is connected to the DMA port of an ATARI ST computer and can be used for six detectors...

    P. Schaaf, T. Wenzel, K. Schemmerling, K. P. Lieb in Hyperfine Interactions (1994)

  4. No Access

    Article

    The electric field gradient at111Cd in vanadium oxides

    The electric field gradient (efg) of111Cd in polycrystalline V2O5 was studied using perturbed angular correlation (PAC) spectroscopy, with the111In activity ion-implanted at 400 keV. Between the individual steps ...

    V. Naicker, A. Bartos, K. P. Lieb, M. Uhrmacher, T. Wenzel… in Hyperfine Interactions (1993)

  5. No Access

    Article

    The magnetic hyperfine interaction of111Cd in the spinels Fe3O4 and Co3O4

    The perturbed angular correlation (PAC) method was applied to study the temperature dependence of the magnetic hyperfine fields in111In-doped polycrystalline Fe3O4 and Co3O4. The critical behaviour near the magne...

    Z. Inglot, K. P. Lieb, M. Uhrmacher, T. Wenzel… in Zeitschrift für Physik B Condensed Matter (1992)