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 SM ISO690:2012BREITNER, Franziska A., JESCHE, Anton, TSURKAN, Vladimir, GEGENWART, Philipp. Thermal decomposition of the Kitaev material α-RuCl3 and its influence on low-temperature behavior. In: Physical Review B, 2023, vol. 108, pp. 2-7. ISSN 2469-9950. DOI: https://doi.org/10.1103/PhysRevB.108.045103 |
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  Physical Review B |
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| Volumul 108 / 2023 / ISSN 2469-9950 /ISSNe 2469-9969 | ||||||
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| DOI:https://doi.org/10.1103/PhysRevB.108.045103 | ||||||
| Pag. 2-7 | ||||||
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We explore the effect of heat treatment in argon atmosphere under various temperatures up to 500∘C on single crystals of α-RuCl3 by the study of the mass loss, microprobe energy-dispersive x-ray spectroscopy, powder x-ray diffraction, and electrical resistance, as well as low-temperature magnetic susceptibility and specific heat. Clear signatures of dechlorination and oxidation of Ru appear for annealing temperatures beyond 300∘C. Analysis of the specific heat below 2 K reveals a RuO2 mass fraction of order 1% for pristine α-RuCl3 which increases up to 20% after thermal annealing, fully consistent with mass-loss analysis. The small RuO2 inclusions drastically reduce the global electrical resistance and may thus significantly affect low-temperature thermal transport and Hall effect. |
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| Cuvinte-cheie Atmospheric temperature, Chlorine compounds, Dechlorination, decomposition, Electric resistance, energy dispersive spectroscopy, magnetic susceptibility, Ruthenium compounds |
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