Change in structural, ferroelectric, and magnetic properties of bismuth ferrite induced by doping with gadolinium
| Autor: | Filip Torić, Damir Pajić, Aleksandra Dapčević, Jovana Ćirković, Goran Branković, Danijela Luković Golić, Aleksandar Radojković, Zorica Branković, Jure Dragović |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Gadolinium Analytical chemistry chemistry.chemical_element 02 engineering and technology 01 natural sciences chemistry.chemical_compound Sintering Phase (matter) Magnetic properties 0103 physical sciences Materials Chemistry Ferrites Perovskites Ceramic Bismuth ferrite 010302 applied physics Ferroelectric properties Rietveld refinement Process Chemistry and Technology 021001 nanoscience & nanotechnology Microstructure Ferroelectricity Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry Perovskites Ferrites Sintering Ferroelectric properties Magnetic properties visual_art Ceramics and Composites visual_art.visual_art_medium Orthorhombic crystal system 0210 nano-technology |
| Zdroj: | Ceramics International |
| DOI: | 10.1016/j.ceramint.2019.06.162 |
| Popis: | Bismuth ferrite, BiFeO3, was doped with a wide range of concentrations (0–30%) of Gd in order to investigate structural, ferroelectric, and magnetic properties and their correlation. Powder samples of Bi1-xGdxFeO3 (x = 0.00–0.30) were prepared using the hydro-evaporation synthesis method. Sintering process at 870 °C for 6 h of as-prepared, Gd doped BiFeO3 powders resulted in ceramic samples with relative densities in the range of (74–86) %. XRD analysis revealed that Bi1-xGdxFeO3 samples (x = 0.00–0.09) crystallized in rhombohedral phase; Bi1-xGdxFeO3 samples (x = 0.10–0.20) contained both rhombohedral and orthorhombic phases, while Bi1-xGdxFeO3 (x = 0.30) sample contained only the orthorhombic phase. The structural parameters obtained after Rietveld refinement for single-phase Bi1-xGdxFeO3 ceramic samples and microstructure image analysis were correlated with the results of ferroelectric and magnetic measurements. Bi1-xGdxFeO3 (x = 0.0625, 0.075, 0.09) samples showed improved ferroelectric properties and reduced leakage current density in comparison with undoped BiFeO3. Gradual increase in Gd content in BiFeO3 led to enhanced magnetic responses and weak ferromagnetic behavior. |
| Databáze: | OpenAIRE |
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