| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Herrmannsdörfer, Thomas
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (5/5 displayed)
- 2023Unconventional Spin State Driven Spontaneous Magnetization in a Praseodymium Iron Antimonidecitations
- 2017Optimized Synthesis of the Bismuth Subiodides BmI4 (m = 4, 14, 16, 18) and the Electronic Properties of Bi14I4 and Bi18I4citations
- 2016Downscaling Effect on the Superconductivity of Pd3Bi2X2 (X = S or Se) Nanoparticles Prepared by Microwave-Assisted Polyol Synthesiscitations
- 2014Full access to nanoscale bismuth - Palladium intermetallics by low-temperature synthesescitations
- 2012Semimetallic paramagnetic nano-Bi2Ir and superconducting ferromagnetic nano-Bi3Ni by microwave-assisted synthesis and room temperature pseudomorphosiscitations
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article
Full access to nanoscale bismuth - Palladium intermetallics by low-temperature syntheses
Abstract
<p>The microwave-assisted polyol process was applied and modified to synthesize phase-pure micro- or nanocrystalline samples of all intermetallic phases in the bismuth - palladium system. Reaction temperatures range between 170 and 240 °C, whereas conventional syntheses from melt necessitate 500 to 1000 °C. Reaction times of few minutes up to 1 h are sufficient. Although not stable at the temperature of synthesis, high-temperature phases are accessible as well. Differences in the redox potentials of the two metals have effectively been compensated by adding auxiliaries such as oleylamine, oleic acid, and potassium hydroxide. The samples were characterized by X-ray powder diffraction, scanning electron microscopy, and energy-dispersive electron spectroscopy. Magnetic properties and electrical conductivity of the nanocrystalline samples were measured. The high temperature compound γ-BiPd showed superconductivity with T<sub>c</sub> = 3.2 K. Nanocrystalline nc-Bi<sub>2</sub>Pd<sub>5</sub> revealed an unusual temperature dependence of the electrical conductivity indicating an electronic phase transition at about 230 K. The electronic band structures of γ-BiPd, Bi<sub>2</sub>Pd<sub>5</sub>, Bi<sub>12</sub>Pd<sub>31</sub>, and BiPd<sub>3</sub> were calculated including spin - orbit coupling. (Graph Presented).</p>