Thomas Gigl
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View article: The origin of enhanced conductivity and structure change in defective Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>: a study combining theoretical and experimental perspectives
The origin of enhanced conductivity and structure change in defective Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub>: a study combining theoretical and experimental perspectives Open
Spinel Li 4 Ti 5 O 12 (LTO): a promising “zero strain” anode for all-solid-state batteries (ASSB) offering exceptional cycling stability and prolonged battery lifespan.
View article: The Origin of Enhanced Conductivity and Structure Change in Defective Li4Ti5O12 or Blue-LTO : a study combined theoretical and experimental perspectives
The Origin of Enhanced Conductivity and Structure Change in Defective Li4Ti5O12 or Blue-LTO : a study combined theoretical and experimental perspectives Open
The spinel Li4Ti5O12 (LTO) has emerged as a promising anode material for the next generation of all-solid-state Li-ion batteries (ASSB), primarily due to its characteristic "zero strain" charge/discharge behavior and exceptional cycling st…
View article: In-situ positron annihilation spectroscopy during tensile tests on Al alloys
In-situ positron annihilation spectroscopy during tensile tests on Al alloys Open
We present a materials analysis method to enable in-situ Doppler broadening spectroscopy (DBS) of the 511 keV annihilation line in matter during tensile tests. This technique allows the correlation between the formation of lattice defects …
View article: Winter Haloes, by Thomas Gigl, Germany
Winter Haloes, by Thomas Gigl, Germany Open
Second place in the 2021 IAU OAE Astrophotography Contest, category Sun/Moon haloes. Captured in Jochberg located in the famous Austrian ski-region of Tirol, this image shows multiple features related to ice halos, which are a more common …
View article: Absolute fraction of emitted Ps determined by geant4-supported analysis of gamma spectra
Absolute fraction of emitted Ps determined by geant4-supported analysis of gamma spectra Open
The fraction of positronium (Ps) emitted from a surface of a germanium single\ncrystal at high temperature is usually assumed to approach unity at zero\npositron implantation energy. In the experiment, however, the determination of\nthe ab…
View article: Breakdown of Arrhenius law of temperature-dependent vacancy concentration in fcc lanthanum
Breakdown of Arrhenius law of temperature-dependent vacancy concentration in fcc lanthanum Open
We measured the temperature dependent equilibrium vacancy concentration using\nin-situ positron annihilation spectroscopy in order to determine the enthalpy\n$H_\\text{f}$ and entropy $S_\\text{f}$ of vacancy formation in elementary\nfcc-L…
View article: Tailoring the Oxygen Reduction Activity of Pt Nanoparticles through Surface Defects: A Simple Top-Down Approach
Tailoring the Oxygen Reduction Activity of Pt Nanoparticles through Surface Defects: A Simple Top-Down Approach Open
International audience
View article: In situ monitoring of artificial aging and solution heat treatment of a commercial Al–Mg–Si alloy with a high intensity positron beam
In situ monitoring of artificial aging and solution heat treatment of a commercial Al–Mg–Si alloy with a high intensity positron beam Open
Microstructural changes of a commercial Al–Mg–Si alloy were studied during artificial aging by in situ Doppler broadening spectroscopy using a high-intensity positron beam. The in situ positron annihilation characteristics at high temperat…
View article: Coincident Doppler broadening spectroscopy with a scanning positron microbeam
Coincident Doppler broadening spectroscopy with a scanning positron microbeam Open
We developed a new scanning positron microbeam for spatially resolved (coincident) Doppler broadening spectroscopy ((C)DBS) at the neutron induced positron source Munich (NEPOMUC). For this purpose, positrons are moderated three times: Fir…
View article: Interrelation between mechanical response, strain field, and local free volume evolution in glassy polymers: Seeking the atomistic origin of post-yield softening
Interrelation between mechanical response, strain field, and local free volume evolution in glassy polymers: Seeking the atomistic origin of post-yield softening Open
A set of complementary experiments are used for the first time to elucidate the interrelation between the mechanical properties, the strain field, and the free volume evolution during non-homogenous compression of a glassy polymer. Two set…
View article: Positron spectroscopy of point defects in the skyrmion-lattice compound MnSi
Positron spectroscopy of point defects in the skyrmion-lattice compound MnSi Open
Outstanding crystalline perfection is a key requirement for the formation of new forms of electronic order in a vast number of widely different materials. Whereas excellent sample quality represents a standard claim in the literature, ther…
View article: Characterization of ion-irradiated ODS Fe–Cr alloys by doppler broadening spectroscopy using a positron beam
Characterization of ion-irradiated ODS Fe–Cr alloys by doppler broadening spectroscopy using a positron beam Open
The damage profile of oxide dispersion strengthened steels after single-, or simultaneous triple-ion irradiation at different conditions has been characterized using a low energy positron beam in order to provide information on microstruct…
View article: Detection and imaging of the oxygen deficiency in single crystalline YBa2Cu3O7−<i>δ</i> thin films using a scanning positron beam
Detection and imaging of the oxygen deficiency in single crystalline YBa2Cu3O7−<i>δ</i> thin films using a scanning positron beam Open
Single crystalline YBa2Cu3O7−δ (YBCO) thin films were grown by pulsed laser deposition in order to probe the oxygen deficiency δ using a mono-energetic positron beam. The sample set covered a large range of δ (0.191 < δ < 0.791) yiel…