Effect of different weight fraction on dielectric properties of barium ferrite-barium titanate composites

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Abstract

Barium ferrite-barium titanate composite systems, (1-x)BaFe 12O19 - (x)BaTiO3 with different weight fractions of × = 0.0, 0.1, 0.3 and 0.5 were prepared via the conventional solid state reaction method using nano-sized starting materials. The x-ray diffraction peaks of the composite samples show two phases which can be indexed by the hexagonal barium ferrite and tetragonal barium titanate. Field emission scanning electron microscope (FESEM) image of sample with × = 0.1 shows formation of nano-sized BaTiO3 grains spreading evenly among the micron-sized BaFe12O19 grains after sintering at 1000°C. The dielectric properties studies at room temperature of the composites samples show that sample with BaTiO3 weight fraction of × = 0.1 has the highest dielectric constant, ε′ and lowest loss tangent, tan δ in the studied frequency range between 1 Hz and 1 MHz. Its highest dielectric constant value is ∼ 1.2 × 103 and its lowest loss tangent is 0.06 at 50 Hz.

Original languageEnglish
Article number012007
JournalJournal of Physics: Conference Series
Volume431
Issue number1
DOIs
Publication statusPublished - 2013

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barium
dielectric properties
ferrites
composite materials
tangents
permittivity
field emission
sintering
x ray diffraction
electron microscopes
frequency ranges
solid state
scanning
room temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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title = "Effect of different weight fraction on dielectric properties of barium ferrite-barium titanate composites",
abstract = "Barium ferrite-barium titanate composite systems, (1-x)BaFe 12O19 - (x)BaTiO3 with different weight fractions of × = 0.0, 0.1, 0.3 and 0.5 were prepared via the conventional solid state reaction method using nano-sized starting materials. The x-ray diffraction peaks of the composite samples show two phases which can be indexed by the hexagonal barium ferrite and tetragonal barium titanate. Field emission scanning electron microscope (FESEM) image of sample with × = 0.1 shows formation of nano-sized BaTiO3 grains spreading evenly among the micron-sized BaFe12O19 grains after sintering at 1000°C. The dielectric properties studies at room temperature of the composites samples show that sample with BaTiO3 weight fraction of × = 0.1 has the highest dielectric constant, ε′ and lowest loss tangent, tan δ in the studied frequency range between 1 Hz and 1 MHz. Its highest dielectric constant value is ∼ 1.2 × 103 and its lowest loss tangent is 0.06 at 50 Hz.",
author = "Anuar, {S. N.} and Zalita Zainuddin and Roslinda Shamsudin",
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AU - Anuar, S. N.

AU - Zainuddin, Zalita

AU - Shamsudin, Roslinda

PY - 2013

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