101. Electric, Magnetic, and Magnetoelectric Properties of Yttrium-Containing BaY0.025Ti0.9625O3–SrFe12O19 Composite
- Author
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Mehraj ud Din Rather, Rubiya Samad, and Basharat Want
- Subjects
010302 applied physics ,Materials science ,Magnetoresistance ,Composite number ,chemistry.chemical_element ,02 engineering and technology ,Yttrium ,Dielectric ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Magnetic hysteresis ,01 natural sciences ,Ferroelectricity ,Electronic, Optical and Magnetic Materials ,chemistry.chemical_compound ,chemistry ,0103 physical sciences ,Barium titanate ,Materials Chemistry ,Magnetocapacitance ,Electrical and Electronic Engineering ,Composite material ,0210 nano-technology - Abstract
The physical properties of BaY0.025Ti0.9625O3, SrFe12O19, and 0.90BaY0.025Ti0.9625O3–0.10 SrFe12O19 composite have been studied. The proposed composite was synthesized by solid-state reaction method from yttrium barium titanate processed by solid-state reaction and strontium hexaferrite obtained by a sol–gel process. Microstructural analysis revealed monophasic grains for yttrium barium titanate phase, while loosely packed biphasic structure was observed for the composite. Powder x-ray analysis showed that the individual phases retained their crystal structure in the composite, without formation of any new additional phase. Measurement of magnetic hysteresis loops at room temperature indicated that the magnetic parameters of the composite were diluted by the presence of the ferroelectric phase. The ferroelectric hysteresis of yttrium barium titanate confirmed the ferroelectric transition at 119°C. Meanwhile, the symmetrical ferroelectric loops observed at different fields established the ferroelectric nature of the composite. Improved dielectric properties and low dielectric losses were observed due to yttrium doping in the composite. The diffuseness of the ferroelectric transitions for the composite was confirmed by the Curie–Weiss law. Activation energy calculations revealed the charge-hopping conduction mechanism in the composite. Magnetodielectric studies confirmed that the overall magnetocapacitance in the composite exhibited combined effects of magnetoresistance and magnetoelectric coupling.
- Published
- 2017
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