Effect of Ferric Oxide Nanoparticles Incorporation on Structure and Electrical Properties of Modified BNKT Ceramics

Pharatree Jaita; Supalak Manotham; Kachaporn Sanjoom; Narumon Lertcumfu; Tawee Tunkasiri

doi:10.4028/www.scientific.net/KEM.798.182

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Surface Morphologies and Durability on Water Contact Angle of Titanium Dioxide Nanoparticle Thin Films
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Effect of Binder Content on the Slip Rheology and Green Properties of Slip Cast Alumina
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Effect of Ferric Oxide Nanoparticles Incorporation on Structure and Electrical Properties of Modified BNKT Ceramics
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 798Effect of Ferric Oxide Nanoparticles Incorporation...

Effect of Ferric Oxide Nanoparticles Incorporation on Structure and Electrical Properties of Modified BNKT Ceramics

Abstract:

The BNKBST30 + 3 vol% Fe₂O₃ceramic was fabricated via a solid-state mixed oxide and sintered 1125°C for 2 h. The effects of ferric oxide nanoparticles (Fe₂O₃) additive on phase evolution, microstructure and electrical properties, i.e. dielectric, ferroelectric and electric field-induced strain, of BNKBST30 ceramic was investigated. The obtain ceramic was well sintered and densely with high density of 5.78 g/cm³. X-ray diffraction pattern and Raman spectra analysis showed a single perovskite with a mixed rhombohedral (R3c) and tetragonal (P4bm) phases. The obtained ceramic had a cubic-like grain shape with an average grain size of 0.82 µm. The dielectric constant as a function of temperature curves exhibited broad transition peaks at maximum temperature (T_m). The ceramic also showed good dielectric (e_r = 1085, tan d = 0.0496, e_r,max = 6099, T_m = 296 °C), ferroelectric (P_r = 27.18 µC/cm², E_c = 20.32 kV/cm, R_sq = 0.95), and electric field-induced strain properties (S_max = 0.22 %, S_neg = - 0.08 %, d^*₃₃ = 440 pm/V). The obtained results indicated that the studied ceramic is considered as candidate for lead-free electromechanical applications.

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Key Engineering Materials (Volume 798)

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182-187

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https://doi.org/10.4028/www.scientific.net/KEM.798.182

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Online since:

April 2019

Authors:

Pharatree Jaita*, Supalak Manotham, Kachaporn Sanjoom, Narumon Lertcumfu, Tawee Tunkasiri

Keywords:

Electrical Properties, Ferric Oxide Nanoparticles (Fe₂O₃), Lead-Free Ceramic

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