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    Item type:Publication,
    High-performance triboelectric and piezoelectric nanogenerator enabled by BF-BT-NZN multifunctional ceramic filler
    (2025-10-01)
    Sumang, Rattiphorn
    ;
    Jantaratana, Pongsakorn
    ;
    Charoonsuk, Thitirat
    ;
    Vittayakorn, Naratip
    ;
    Bongkarn, Theerachai
    The development of efficient and flexible energy-harvesting materials is essential for advancing self-powered electronic devices. In this study, we report the fabrication of flexible composite films by incorporating (1-x)(0.75BiFeO<inf>3</inf>-0.25BaTiO<inf>3</inf>)-xNd(Zn<inf>0.67</inf>Nb<inf>0.33</inf>)O<inf>3</inf>,abbreviated as (BF-BT-NZN), ceramic powder into a PDMS matrix, with filler contents ranging from 5 to 25 wt%. The optimized 10 wt% composite film demonstrated a maximum output voltage of 112.24 V and a current of 5.69 µA approximately 11 and 18 times higher than pure PDMS, respectively. Following a poling treatment, the output further increased to 149.54 V and 10.71 µA. The film exhibited excellent flexibility and durability, enabling practical applications such as powering LEDs, a digital watch, and charging capacitors. These results highlight the potential of BF-BT-NZN/PDMS composites as high-performance materials for wearable energy-harvesting applications.
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    Ferroelectric and ferromagnetic properties of K-doped 0.7BiFeO 3-0.3BaTiO3 multiferroic ceramics
    (2013-01-01)
    Prasatkhetragarn, A.
    ;
    Jantaratana, P.
    ;
    Vittayakorn, N.
    ;
    Yotburut, B.
    ;
    Yimnirun, R.
    Lead-free and multiferroic 0.7BiFeO<inf>3-</inf>0.3BaTiO<inf>3</inf> ceramics doped with K (0.5, 1.0, 3.0 and 5.0 mol%) have been successfully prepared by a solid state mechanical milling technique. The single phase perovskite was found at calcination temperature of 900?C for 6 h. The effects of K doping on the crystal structure, microstructure, magnetic and electrical properties of lead-free 0.7BiFeO<inf>3-</inf>0.3BaTiO<inf>3</inf> ceramics were investigated and discussed. The fracture micrographs of specimens elucidate the grain growth behavior with increasing K content up to 3.0 mol%. The weak ferromagnetic and ferroelectric properties were observed in rhombohedrally- distorted 0.7BiFeO<inf>3-</inf>0.3BaTiO<inf>3</inf> perovskite ceramic. However, the addition of K into 0.7BiFeO<inf>3-</inf>0.3BaTiO<inf>3</inf> has been found to improve the ferroelectric and ferromagnetic properties, with the optimized properties obtained at 3.0 mol% content of K. Copyright © 2013 Taylor & Francis Group, LLC.
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