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17 papers · 1 filter
Proton diffusivity in the BaZr0.9Y0.1O3-δ proton conductor
Artur Braun, Sophie Duval, Peter Ried +7
The thermally activated proton diffusion in BaZr0.9Y0.1O3-δ was studied with electrochemical impedance spectroscopy (IS) and quasi-elastic neutron scattering (QENS) in the temperat…
Diffraction of slow neutrons by holographic SiO_2 nanoparticle-polymer composite gratings
J. Klepp, C. Pruner, Y. Tomita +8
Diffraction experiments with holographic gratings recorded in SiO nanoparticle-polymer composites have been carried out with slow neutrons. The influence of parameters such as…
Correlation of conductivity and angle integrated valence band photoemission characteristics in single crystal iron perovskites for 300 K < T < 800 K: Comparison of surface and bulk sensitive methods
A. Braun, B. S. Mun, Y. Sun +9
A single crystal monolith of La0.9Sr0.1FeO3 and thin pulsed laser deposited film of La0.8Sr0.2Fe0.8Ni0.2O3 were subject to angle integrated valence band photoemission spectroscopy…
Entanglement of charge transfer, hole doping, exchange interaction and octahedron tilting angle and their influence on the conductivity of La1-xSrxFe0.75Ni0.25O3-δ: A combination of x-ray spectroscopy and diffraction
Selma Erat, Artur Braun, Cinthia Piamonteze +5
Substitution of La by Sr in the 25% Ni doped charge transfer insulator LaFeO3 creates structural changes that inflect the electrical conductivity caused by small polaron hopping vi…
Correlation of high temperature X-ray photoemission spectral features and conductivity of epitaxially strained (La0.8Sr0.2)0.95Ni0.2Fe0.8O3/SrTiO3(110)
A. Braun, X. Zhang, Y. Sun +7
Reversible and irreversible discontinuities at around 573 K and 823 K in the electric conductivity of a strained 175 nm thin film of (La0.8Sr0.2)0.95Ni0.2Fe0.8O3-δ grown by pulsed…
An electron hole doping and soft x-ray spectroscopy study on La1-xSrxFe0.75Ni0.25O3-δ
Selma Erat, Artur Braun, Alejandro Ovalle +4
The conductivity of the electron hole and polaron conductor La1-xSrxFe0.75Ni0.25O3-δ, a potential cathode material for intermediate temperature solid oxide fuel cells, was studied…