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512 Aktuelle Fachpublikationen zum Thema temperature

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Defect‐enhanced F– ion conductivity in layer‐structured nanocrystalline BaSnF4 prepared by high‐energy ball milling combined with soft annealing

20.11.2014 | Florian Preishuber‐Pflügl, Viktor Epp, Suliman Nakhal, Martin Lerch, Martin Wilkening, physica status solidi (c), 2014

Abstract Fast ion conductors play one of the most important roles in solid state ionics as there is a great demand for their application in safe and powerful electrochemical energy storage systems. For such materials, it is known that the synthesis conditions may have significant impact on the ...

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Memristors under the influence of noise and temperature

20.11.2014 | G. A. Patterson, F. Sangiuliano Jimka, P. I. Fierens, D. F. Grosz, physica status solidi (c), 2014

Abstract We study the performance of a manganite sample meant for memresistive applications. In particular, we experimentally address the interplay between temperature and electrical noise the sample is subject to. Results reveal an optimum noise amplitude that maximizes the contrast between ...

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Conductivity patterning with Physarum polycephalum: natural growth and deflecting

19.11.2014 | Alice Dimonte, Tatiana Berzina, Angelica Cifarelli, Valentina Chiesi, Franca Albertini, Victor Erokhin, physica status solidi (c), 2014

Abstract The present work is dedicated to the use of Physarum polycephalum slime mold, an unicellular organism self‐adapting, self‐repairing and self‐repellent, for the realization of elements for unconventional computational systems. Physarum continuously changes its shape under the influence ...

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Effect of 2.5 MeV proton irradiation on the critical parameters of composite HTS tapes

29.10.2014 | Landysh Antonova, Timofey Demikhov, Alexey Troitskii, Alexander Didyk, Alexander Kobzev, Alexander Yurasov, Sergey S ..., physica status solidi (c), 2014

Abstract In this paper we study the radiation resistance of high temperature superconductor (HTS) tapes based on GdBCO produced by SuperOx‐Japan Company to proton irradiation with an energy of 2.5 MeV in the fluence range from 6.1×1014 p/cm2 to 1×1017 p/cm2. The dependences of critical ...

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Ion beam synthesis of embedded III‐As nanocrystals in silicon substrate

29.10.2014 | Rim Khelifi, Mathieu Frégnaux, Yann Le Gall, Dominique Muller, Guy Schmerber, Daniel Mathiot, physica status solidi (c), 2014

Abstract Our goal is to use the versatility of ion beam synthesis to grow nanocrystals of InxGa1‐xAs alloys embedded in a silicon substrate. We study, first, the annealing conditions necessary to grow well defined InAs and GaAs binary nanocrystals. High dose of As, Ga and In is implanted, ...

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Raman microscopy as a defect microprobe for hydrogen bonding characterization in materials used in fusion applications

29.10.2014 | Cédric Pardanaud, Younès Addab, Céline Martin, Pascale Roubin, Bernard Pegourié, Martin Oberkofler, Martin Köppen, T ..., physica status solidi (c), 2014

Abstract We present the Raman microscopy ability to detect and characterize the way hydrogen is bonded with elements that will be used for ITER's plasma facing components. For this purpose we first use hydrogenated amorphous carbon samples, formed subsequently to plasma‐wall interactions ...

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Kinetic Monte Carlo simulation of nanostructural evolution under post‐irradiation annealing in dilute FeMnNi

29.10.2014 | M. Chiapetto, C. S. Becquart, C. Domain, L. Malerba, physica status solidi (c), 2014

Abstract Post‐irradiation annealing experiments are often used to obtain clearer information on the nature of defects produced by irradiation. However, their interpretation is not always straightforward without the support of physical models. We apply here a physically‐based set of parameters ...

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Thermodynamic analysis of defect formation in BiFeO3

29.10.2014 | T. Tchelidze, T. Gagnidze, A. Shengelaya, physica status solidi (c), 2014

Abstract In this paper the thermodynamic analysis of equilibrium concentration of defects for the system BiFeO3(solid)‐O2 (gas) is carried out. The analysis is performed by the Kroger method of quasi‐chemical equations. The concentration of defects and free carriers vs. oxygen partial pressure ...

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Low temperature hydrogenated microcrystalline silicon‐carbon alloys deposited by RF‐PECVD

10.10.2014 | Sofia Gaiaschi, Marie‐Estelle Gueunier‐Farret, Erik V. Johnson, physica status solidi (c), 2014

Abstract Two sets of hydrogenated microcrystalline silicon carbon alloys were deposited by standard radio frequency (RF) plasma enhanced chemical vapor deposition at a substrate temperature of 175 °C. The effect of the methane flow rate and of the RF‐power were investigated. Samples were ...

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Electroluminescence of germanium LEDs on silicon: Influence of antimony doping

10.10.2014 | Bernhard Schwartz, André Klossek, Martin Kittler, Michael Oehme, Erich Kasper, Jörg Schulze, physica status solidi (c), 2014

Abstract Antimony‐doped Ge‐LEDs were subjected to electroluminescence studies at temperatures about 300 K and 80 K. The LEDs were grown on Si substrates by MBE. The thickness of the active layer was 300 nm. For the p+nn+‐LEDs the Sb concentrations were 1 × 1018, 1 × 1019, 3 × 1019, 4 × 1019, 7 ...

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