Paramagnetic behaviour of silver nanoparticles generated by decomposition of silver oxalate
| Autor: | Valérie Baco-Carles, Sophie Dareys, Hoa Le Trong, Frédéric Courtade, Philippe Tailhades, K. Kiryukhina, Michel Gougeon |
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| Přispěvatelé: | Centre National d'Études Spatiales - CNES (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Vietnam National University - VNU (VIETNAM), Centre Interuniversitaire de Recherche et d'Ingénierie des Matériaux - CIRIMAT (Toulouse, France), Institut National Polytechnique de Toulouse - INPT (FRANCE), Vietnam National University - Ho Chi Minh City (VNU-HCM), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Centre National d'Études Spatiales [Toulouse] (CNES) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Inorganic chemistry Silver oxalate Nanoparticle 02 engineering and technology Oxalate decomposition Nanocrystalline metal 010402 general chemistry 01 natural sciences Oxalate Silver nanoparticle Metal [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] Paramagnetism chemistry.chemical_compound [PHYS.MECA.SOLID]Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph] General Materials Science Soldering General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Magnetic susceptibility 0104 chemical sciences chemistry visual_art visual_art.visual_art_medium Mécanique des solides Diamagnetism Paramagnetic silver Mécanique des matériaux Silver nanoparticles 0210 nano-technology |
| Zdroj: | Solid State Sciences Solid State Sciences, Elsevier, 2017, vol. 69, pp. 44-49. ⟨10.1016/j.solidstatesciences.2017.05.009⟩ |
| ISSN: | 1293-2558 |
| Popis: | International audience; Silver oxalate Ag2C2O4, was already proposed for soldering applications, due to the formation when it is decomposed by a heat treatment, of highly sinterable silver nanoparticles. When slowly decomposed at low temperature (125 °C), the oxalate leads however to silver nanoparticles isolated from each other. As soon as these nanoparticles are formed, the magnetic susceptibility at room temperature increases from -3.14 10-7 emu.Oe-1.g-1 (silver oxalate) up to -1.92 10-7 emu.Oe-1.g-1 (metallic silver). At the end of the oxalate decomposition, the conventional diamagnetic behaviour of bulk silver, is observed from room temperature to 80 K. A diamagnetic-paramagnetic transition is however revealed below 80 K leading at 2 K, to silver nanoparticles with a positive magnetic susceptibility. This original behaviour, compared to the one of bulk silver, can be ascribed to the nanometric size of the metallic particles. |
| Databáze: | OpenAIRE |
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