Multiferroic behavior of the functionalized surface of a flexible substrate by deposition of Bi2O3 and Fe2O3

0558703 - ÚFM 2023 RIV BE eng J - Journal Article
Ramazanov, S. - Sobola, Dinara - Talu, S. - Orudzev, F. - Arman, A. - Kaspar, P. - Dallaev, R. - Ramazanov, G.
Multiferroic behavior of the functionalized surface of a flexible substrate by deposition of Bi2O3 and Fe2O3.
Microscopy Research and Technique. ROČ. 85, č. 4 (2022), s. 1300-1310. ISSN 1059-910X. E-ISSN 1097-0029
R&D Projects: GA MŠMT(CZ) LQ1601
Research Infrastructure: CzechNanoLab - 90110
Institutional support: RVO:68081723
Keywords : atomic layer deposition * Bi2O3 * BiFeO3
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 2.5, year: 2022
Method of publishing: Limited access
https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/jemt.23996

Thin films of bismuth and iron oxides were obtained by atomic layer deposition (ALD) on the surface of a flexible substrate poly(4,4 '-oxydiphenylene-pyromellitimide) (Kapton) at a temperature of 250 degrees C. The layer thickness was 50 nm. The samples were examined by secondary-ion mass spectrometry, and uniform distribution of elements in the film layer was observed. Surface morphology, electrical polarization, and mechanical properties were investigated by atomic force microscope, piezoelectric force microscopy, and force modulation microscopy. The values of current in the near-surface layer varied in the range of +/- 80 pA when a potential of 5 V was applied. Chemical analysis was performed by X-ray photoelectron spectroscopy, where the formation of Bi2O3 and Fe2O3 phases, as well as intermediate phases in the Bi-Fe-O system, was observed. Magnetic measurements were carried out by a vibrating sample magnetometer that showed a ferromagnetic response. The low-temperature method of functionalization of the Kapton surface with bismuth and iron oxides will make it possible to adapt the Bi-Fe-O system to flexible electronics.
Permanent Link: http://hdl.handle.net/11104/0332269