Lattice structure and magnetization of LaCoO3 thin films
| Autor: | Rata, A. D., Herklotz, A., Schultz, L., Doerr, K. |
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| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Eur. Phys. J. B 76, 215219 (2010) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1140/epjb/e2010-00203-6 |
| Popis: | We investigate the structure and magnetic properties of thin films of the LaCoO$_{3}$ compound. Thin films are deposited by pulsed laser deposition on various substrates in order to tune the strain from compressive to tensile. Single-phase (001) oriented LaCoO$_{3}$ layers were grown on all substrates despite large misfits. The tetragonal distortion of the films covers a wide range from -2% to 2.8%. Our LaCoO$_{3}$ films are ferromagnetic with Curie temperature around 85 K, contrary to the bulk. The total magnetic moment is below $1\mu_{B}$/Co$^{3+}$, a value relatively small for an exited spin-state of the Co$^{3+}$ ions, but comparable to values reported in literature. A correlation of strain states and magnetic moment of Co$^{3+}$ ions in LaCoO$_{3}$ thin films is observed. Comment: submitted tu European Phys. J. B |
| Databáze: | arXiv |
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