| Autor: |
Joshi, Prabhav, Modi, Anchit, Kapoor, Shivani K., Tiwari, Shivendra, Shukla, Jyoti, Mishra, Ashutosh |
| Zdroj: |
Journal of Materials Science: Materials in Electronics; Sep2023, Vol. 34 Issue 25, p1-10, 10p |
| Abstrakt: |
The present study explores the potential variations in the structural, microstructural, vibrational, magnetic, and ferroelectric features of Bi1−xMgxFeO3 (0.0 ≤ x ≤ 0.1) nano perovskite compounds through controlled doping of the divalent cation (Mg2+) at the Bismuth-site in the lattice. The compounds are synthesized using ultrasonication-assisted sol–gel synthesis techniques. Rietveld-fitted X-ray diffraction studies reveal that the synthesized compounds exhibit rhombohedral symmetry (R3c space group), with lattice parameters and volume decreasing with increasing Mg substitution due to ionic mismatch of A-site cations. The crystalline size, determined using Scherrer and Williamson–Hall techniques, decreases with increasing doping content. Scanning electron microscopy reveals the formation of spherical-shaped particles with a flake-like grain structure, and their particle size distribution is similar to the crystalline size. The room temperature Raman spectra exhibit phonon peak shifts towards lower temperatures in all the samples. Notably, doped compounds’ saturation magnetization significantly increases with higher Mg-doping. This observation suggests that the exchange interactions between Fe–O–Fe have been enhanced, resulting in spatial modulation for the destruction of the helical structure. Furthermore, increased polarization and leaky behavior are observed with increasing Mg content. These findings provide valuable insights for tailoring the properties of BiFeO3-based nano perovskite compounds for potential applications in various fields such as spintronics, multiferroics, and sensors. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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