https://oldena.lpnu.ua/handle/ntb/40246| Title: | New mixed perovskite RCo0.5Cr0.5O3 (R = Dy, Ho, Er) as a potential thermoelectric and sensory material |
| Authors: | Hreb, Vasyl Vasylechko, Leonid Prots, Yurii Fitch, Andrew |
| Affiliation: | Lviv Polytechnic National University Max-Planck-Institut für Chemische Physik fester Stoffe ESRF-The European Synchrotron |
| Bibliographic description (Ukraine): | New mixed perovskite RCo0.5Cr0.5O3 (R = Dy, Ho, Er) as a potential thermoelectric and sensory material / Vasyl Hreb, Leonid Vasylechko, Yurii Prots, Andrew Fitch // Litteris et Artibus : proceedings of the 6th International youth science forum, November 24–26, 2016, Lviv, Ukraine / Lviv Polytechnic National University. – Lviv : Lviv Polytechnic Publishing House, 2016. – P. 47–48. – Bibliography: 5 titles. |
| Conference/Event: | Litteris et Artibus |
| Issue Date: | 2016 |
| Publisher: | Lviv Polytechnic Publishing House |
| Country (code): | UA |
| Place of the edition/event: | Lviv |
| Keywords: | perovskite thermal expansion lattice parameters insulator-metal transition spin state mixed cobaltites and chromites spin transition |
| Number of pages: | 47-48 |
| Abstract: | The mixed earth rare cobaltites and chromites with general formula RCo0.5Cr0.5O3 (R = Dy, Ho, Er) were obtained by solid state reaction in air at 1373 K. Based on high temperature X-ray synchrotron powder diffraction data in range temperature 298 –1273 K abnormal thermal expansion of lattice dimensions was observed. Thermal expansion coefficient showed maxima, which point on insulator-metal transition. Abnormal behavior is associated with changes of spin state of Co3+ ions. |
| URI: | https://ena.lpnu.ua/handle/ntb/40246 |
| References (International): | [1] N.K. Guar, P. Thakur, “Thermal and mechanical properties of RCoO3,” Metall. Mater. Trans., vol. 44A, pp.5876–5883, 2013. [2] Sh. Lei, L. Liu, Ch. Wang at al. “General synthesis of rare-earth orthochromites with quasi-hollow nanostructures and their magnetic properties,” J. Mater. Chem. A, vol.1, pp. 11982, 2013. [3] H. Hashimoto, T. Kusunose, T. Sekino, “Influence of ionic sizes of rare earths on thermoelectric properties of perovskite-type rare earth cobalt oxides RCoO3,” J. Alloys Compd., vol. 484, pp. 246–248, 2009. [4] K. Knížek, Z. Jirák, J. Hejtmánek et al. “Structural anomalies associated with the electronic and spin transitions in LnCoO3,” Eur. Phys. J. B., vol. 47, pp.213, 2005. [5] M. Tachibana, T. Yoshida. et al. “Evolution of electronic states in RCoO3 (R = rare earth): Heat capacity measurements,” Phys. Rev. B, vol. 77, pp.094402, 2008. |
| Content type: | Conference Abstract |
| Appears in Collections: | Litteris et Artibus. – 2016 р. |
| File | Description | Size | Format | |
|---|---|---|---|---|
| LEA-2016-47-48.pdf | 535.02 kB | Adobe PDF | View/Open |
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