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Higher order magnetoelectric interactions in multiferroic BNT-BFO solid solution
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DOI：10.1016/j.mtcomm.2025.111939.png)
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摘要
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The contemporary scientific landscape is characterized by a growing interest in optimizing both pure and mixed metal oxides for their multifunctional device applications. The increasing fascination with these materials stems from their exceptional electrical and magnetic properties, which can be meticulously adjusted to meet specific technological needs. To facilitate this, Bi0.5Na0.5TiO3 (BNT) has been systematically modified with BiFeO3 (BFO) (i.e., (1-x)BNT-xBFO; x = 0.2, 0.3, and 0.4) via sol-gel method and their structural, electrical and magnetic properties have been investigated. The X-ray diffraction and SEM analyses confirm the formation of a solid solution, with no evidence of secondary phase. The 0.7BNT-0.3BFO solid solution demonstrates promising characteristics, including low leakage current density (7.04 x 10(-7) A/cm(2)), high dielectric constant (similar to 705 at 1 kHz), significant polarization (similar to 38.87 mu C/cm(2)), enhanced magnetization (similar to 0.47 emu/g at 10 kOe) and magnetocapacitance (similar to 1.82 %). The Landau theory revealed the 0.7BNT-0.3BFO specimen exhibit quadratic linear magnetoelectric coupling that heralding advancements in future technologies.
Keyword:
Multiferroics
Solid-solution
Magnetoelectric coupling
Magnetocapacitance
期刊
IF:
4.5
论文数:
1.6W
被引数:
3.7W
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