Titanium doped yttrium manganite: improvement of microstructural properties and peculiarities of multiferroic properties
| Autor: | Olivera Zemljak, Danijela Luković Golić, Milica Počuča-Nešić, Aleksandra Dapčević, Pavla Šenjug, Damir Pajić, Tina Radošević, Goran Branković, Zorica Branković |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Biomaterials
Ceramics Ferroelectric properties Sol-gel processing Ti-doped YMnO3 sol-gel processing ceramics microcracks/micropores ferroelectric properties magnetic properties Magnetic properties Materials Chemistry Ceramics and Composites Ti-doped YMnO3 General Chemistry Condensed Matter Physics Electronic Optical and Magnetic Materials Microcracks/micropores |
| Zdroj: | Journal of Sol-Gel Science and Technology |
| DOI: | 10.1007/s10971-022-05872-3 |
| Popis: | Yttrium manganite, YMnO3, was doped with different concentrations of titanium (x = 0, 0.04, 0.08, 0.10, 0.15, 0.20) in order to improve the microstructural and multiferroic properties. The powders were prepared using sol-gel polymerization complex method from citrate precursors. Depending on the titanium concentration, the hexagonal structure and/or the rhombohedral superstructure are present in the sintered samples. The YMn1–xTixO3+δ (x = 0.10, 0.15, 0.20) ceramic samples showed significantly reduced density of microcracks, and of inter- and intragranular pores, and relative densities greater than 90%. The structural parameters for YMn1–xTixO3+δ (x = 0, 0.10, 0.15) were correlated with the results of magnetic and ferroelectric measurements. The most of titanium-doped samples showed a reduction of the leakage current density in comparison with undoped YMnO3, and their ferroelectric responses were slightly improved. The modifications in structural arrangement resulted in partial suppression of ideal antiferromagnetic ordering visible through decrease of the Néel temperature and Weiss parameter, as well as the appearance of weak ferromagnetism and increase of magnetization (especially, in samples x = 0.08, 0.10, 0.15). These changes in physical quantities most likely originated from incorporation of the uncompensated magnetic moments and possible spin canting induced by enhanced symmetry break of the superexchange bridges. |
| Databáze: | OpenAIRE |
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