R. Vianden
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View article: Integral $ab$ $initio$/DFT and experimental TDPAC approach enlightening the $aftereffects$ phenomenon: probing electronic properties in $α$-Al$_2$O$_3$:($^{111}$In$\rightarrow$)$^{111}$Cd at the atomic scale
Integral $ab$ $initio$/DFT and experimental TDPAC approach enlightening the $aftereffects$ phenomenon: probing electronic properties in $α$-Al$_2$O$_3$:($^{111}$In$\rightarrow$)$^{111}$Cd at the atomic scale Open
By means of an integral $ab$ $initio$/DFT and double-approach experimental study we contribute here to enlighten and quantify the origin of dynamic hyperfine interactions (HFIs) assigned to the electron-capture (EC) decay aftereffects (ECA…
View article: Strong magnetoelectric coupling at an atomic nonmagnetic electromagnetic probe in bismuth ferrite
Strong magnetoelectric coupling at an atomic nonmagnetic electromagnetic probe in bismuth ferrite Open
Isolated nonmagnetic substitutional defect ions experience huge coupled electric magnetic interaction in the single-phase multiferroic BiFeO$_{3}$. In the ferroelectric state above the magnetic Néel temperature $T$$_{N}$, the electric envi…
View article: Free Molecule Studies by Perturbed <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>γ</mml:mi><mml:mtext>−</mml:mtext><mml:mi>γ</mml:mi></mml:mrow></mml:math> Angular Correlation: A New Path to Accurate Nuclear Quadrupole Moments
Free Molecule Studies by Perturbed Angular Correlation: A New Path to Accurate Nuclear Quadrupole Moments Open
Accurate nuclear quadrupole moment values are essential as benchmarks for nuclear structure models and for the interpretation of experimentally determined nuclear quadrupole interactions in terms of electronic and molecular structure. Here…
View article: Thermal annealing effects in polycrystalline EuTiO3 and Eu2Ti2O7
Thermal annealing effects in polycrystalline EuTiO3 and Eu2Ti2O7 Open
Using time-differential perturbed angular correlation of γ rays, we investigated the electric-field gradient of polycrystalline EuTiO3 and Eu2Ti2O7, with 181Hf(181Ta) as a probe, following different thermal treatments. The measurements wer…
View article: Studying electronic properties in GaN without electrical contacts using γ-γ vs e−-γ Perturbed Angular Correlations
Studying electronic properties in GaN without electrical contacts using γ-γ vs e−-γ Perturbed Angular Correlations Open
View article: Cd and In-doping in thin film SnO2
Cd and In-doping in thin film SnO2 Open
In this paper, we investigate the effects of doping in the local structure of SnO2 by measuring the hyperfine interactions at impurity nuclei using the Time Differential Perturbed Gamma-Gamma Angular Correlation (TDPAC) method in addition …
View article: Implantation of cobalt in SnO2 thin films studied by TDPAC
Implantation of cobalt in SnO2 thin films studied by TDPAC Open
Here we report time differential perturbed angular correlation (TDPAC) results of Co-doped SnO2 thin films. Making use of stable Co and radioactive 111In implanted at the Bonn Radioisotope Separator with energies of 80 keV and 160 keV, res…
View article: Ion implantation in titanium dioxide thin films studied by perturbed angular correlations
Ion implantation in titanium dioxide thin films studied by perturbed angular correlations Open
The local environment in titanium dioxide was studied by the time dependent perturbed γ-γ angular correlation of 111In/111Cd and 181Hf/181Ta at the Helmholtz-Institut für Strahlen-und Kernphysik, Bonn. An introduction to the implantation m…
View article: PAC studies of isolated small Cd and Hg molecules: The nuclear quadrupole moments
PAC studies of isolated small Cd and Hg molecules: The nuclear quadrupole moments Open
View article: Growth of Ga2O3 by furnace oxidation of GaN studied by perturbed angular correlations
Growth of Ga2O3 by furnace oxidation of GaN studied by perturbed angular correlations Open