The current study used a solid-state approach to synthesize Gadolinium Orthoferrite nanoparticles (GdFeO3 NPs), followed by solution casting to prepare PVDF (Polyvinylidene fluoride)/GdFeO3 composites. The X-ray diffraction techniques have produced an average grain size of 1.01 μm and a crystallite size of 5 nm for GdFeO3 NPs. The semi-crystalline structure with mixed α, β, and γ-phases of PVDF was confirmed by vibrational spectroscopy. The highest β-phase percentage of 74.39% was achieved for a 15 wt% composite film. The morphological study of the PVDF matrix reveals very little agglomeration, indicating that the NPs are uniformly distributed. The inclusion of ceramic particles may cause PVDF to undergo a phase transition (from the α-phase to the β-phase), which could affect the crystallinity as determined by thermal analysis. The composite film containing 20 wt% NPs had the highest permittivity (ε′) of 61 (at 100 Hz), which is 6 times greater than the neat PVDF. The significant increases in permittivity were explained by a combination of a high ε′ of ceramic filler and strong interfacial polarization brought on by a short inter-particle distance between filler particles.
YangKHuangXHuangY, et al.Fluoro-Polymer@BaTiO3 hybrid nanoparticles prepared via RAFT polymerization: toward ferroelectric polymer nanocomposites with high dielectric constant and low dielectric loss for energy storage application. Chem Mater2013; 25: 2327–2338.
2.
NathNKMohantaRRParidaRK, et al.Improving the energy storage efficiency and power density of polymer blend in combination with Ti3C2Tx for energy storage devices. Mater Today Chem2024b; 41: 102338.
3.
DaiZ-HLiTGaoY, et al.Achieving high dielectric permittivity, high breakdown strength and high efficiency by cross-linking of poly(vinylidene fluoride)/BaTiO3 nanocomposites. Compos Sci Technol2018; 169: 142–150.
4.
LiQHanKGadinskiMR, et al.High energy and power density capacitors from solution‐processed ternary ferroelectric polymer nanocomposites. Adv Mater2014; 26: 6244–6249.
5.
FanQLiuMMaC, et al.Significantly enhanced energy storage density with superior thermal stability by optimizing Ba(Zr0.15Ti0.85)O3/Ba(Zr0.35Ti0.65)O3 multilayer structure. Nano Energy2018; 51: 539–545.
6.
YaoZSongZHaoH, et al.Homogeneous/inhomogeneous‐structured dielectrics and their energy‐storage performances. Adv Mater2017; 29: 201601727.
7.
YuanJ-KDangZ-MYaoS-H, et al.Fabrication and dielectric properties of advanced high permittivity polyaniline/poly(vinylidene fluoride) nanohybrid films with high energy storage density. J Mater Chem2010; 20: 2441.
8.
WangQZhuL. Polymer nanocomposites for electrical energy storage. J Polym Sci B Polym Phys2011; 49: 1421–1429.
9.
KakimotoK-IFukataKOgawaH. Fabrication of fibrous BaTiO3-reinforced PVDF composite sheet for transducer application. Sensors and Actuators a Physical2013; 200: 21–25.
10.
LopesACCostaCMTavaresCJ, et al.Nucleation of the electroactive γ phase and enhancement of the optical transparency in low filler content poly(vinylidene)/clay nanocomposites. J Phys Chem C2011; 115: 18076–18082.
11.
LuoBWangXWangY, et al.Fabrication, characterization, properties and theoretical analysis of ceramic/PVDF composite flexible films with high dielectric constant and low dielectric loss. J Mater Chem A2013; 2: 510–519.
12.
KühnMKliemH. Monte Carlo simulations of ferroelectric properties based on a microscopic model for PVDF. Phys Status Solidi2007; 245: 213–223.
13.
LimJYKimSSeoY. Enhancement of β-phase in PVDF by electrospinning. AIP Conf Proc2015; 228: 123902.
LatifSIzharFImranM, et al.Polymer nanocomposites for dielectric and energy storage applications. Amsterdam: Elsevier eBooks, 2023, pp. 435–460.
16.
Shri PrakashBVarmaKBR. Dielectric behavior of CCTO/epoxy and Al-CCTO/epoxy composites. Compos Sci Technol2007; 67: 2363–2368.
17.
SrivastavaAMaitiPKumarD, et al.Mechanical and dielectric properties of CaCu3Ti4O12 and La doped CaCu3Ti4O12 poly(vinylidene fluoride) composites. Compos Sci Technol2014; 93: 83–89.
18.
SrivastavaAJanaKKMaitiP, et al.Mechanical and dielectric behaviour of CaCu3Ti4O12 and Nb doped CaCu3Ti4O12 poly(vinylidene fluoride) composites. Journal of Composites2014a; 2014: 1–9.
19.
KumarSSupriyaSKarM. Enhancement of dielectric constant in polymer-ceramic nanocomposite for flexible electronics and energy storage applications. Compos Sci Technol2018b; 157: 48–56.
20.
BeheraCChoudharyRNP. Electrical and multiferroic characteristics of PVDF-MnFe2O4 nanocomposites. J Alloys Compd2017; 727: 851–862.
21.
ZhouBLiRCaiJ, et al.Grain size effect on electric properties of novel BaTiO3/PVDF composite piezoelectric ceramics. Mater Res Express2018; 5: 095510.
22.
VandanaCSGuravammaJRudramadeviBH. Synthesis and dielectric properties of Zn doped GdFeO3ceramics. IOP Conf Ser Mater Sci Eng2016; 149: 012180.
23.
LoneIHKhanHJainAK, et al.Metal–organic precursor synthesis, structural characterization, and multiferroic properties of GdFeO3 nanoparticles. ACS Omega2022; 7: 33908–33915.
24.
ZhangYZhengAYangX, et al.Cubic GdFeO3 particle by a simple hydrothermal synthesis route and its photoluminescence and magnetic properties. CrystEngComm2012; 14: 8432.
25.
SinghVPSinghCBSatyarthiSK, et al.Highly enhanced energy storage properties of H2O2-hydroxylated rare earth ferrites (LaFeO3 and GdFeO3) nanofillers in poly(vinylidene fluoride)-based nanocomposite films. J Mater Sci Mater Electron2022; 33: 20170–20184.
26.
SanthoshBSYashasSRKumara SwamyN, et al.Application of non-hierarchical gadolinium ortho-ferrite nanostructure for LED-driven photocatalytic mineralization of doxycycline hydrochloride. J Mater Sci Mater Electron2022; 33: 11676–11686.
27.
DeepaKSShaijuPSebastianMT, et al.Poly(vinylidene fluoride)–La0.5Sr0.5CoO3−δ composites: the influence of LSCO particle size on the structure and dielectric properties. Phys Chem Chem Phys2014; 16: 17008–17017.
28.
GregorioR. Determination of the α, β, and γ crystalline phases of poly(vinylidene fluoride) films prepared at different conditions. J Appl Polym Sci2006; 100: 3272–3279.
29.
LuoBWangXWangY, et al.Fabrication, characterization, properties and theoretical analysis of ceramic/PVDF composite flexible films with high dielectric constant and low dielectric loss. J Mater Chem A2013b; 2: 510–519.
30.
DashSChoudharyRNPGoswamiMN. Enhanced dielectric and ferroelectric properties of PVDF-BiFeO3 composites in 0–3 connectivity. J Alloys Compd2017; 715: 29–36.
31.
LoneIHKhanHJainAK, et al.Metal–Organic precursor synthesis, structural characterization, and multiferroic properties of GDFEO3 nanoparticles. ACS Omega2022b; 7: 33908–33915.
32.
Lanceros-MéndezSManoJFCostaAM, et al.Ftir and DSC studies of mechanically deformed β-pvdf films. J Macromol Sci Part B2001; 40: 517–527.
33.
PengYWuP. A two-dimensional infrared correlation spectroscopic study on the structure changes of PVDF during the melting process. Polymer2004; 45: 5295–5299.
34.
Abd El-AzizAMAfifiM. Influence the β-PVDF phase on structural and elastic properties of PVDF/PLZT composites. Mater Sci Eng B2024; 301: 117152.
35.
RuanLYaoXChangY, et al.Properties and applications of the β phase poly(vinylidene fluoride). Polymers2018; 10: 228.
36.
TsonosCSoinNTomaraG, et al.Electromagnetic wave absorption properties of ternary poly(vinylidene fluoride)/magnetite nanocomposites with carbon nanotubes and graphene. RSC Adv2015b; 6: 1919–1924.
37.
SoinNBoyerDPrashanthiK, et al.Exclusive self-aligned β-phase PVDF films with abnormal piezoelectric coefficient prepared via phase inversion. Chem Commun2015; 51: 8257–8260.
38.
SoinNShahTHAnandSC, et al.Novel “3-D spacer” all fibre piezoelectric textiles for energy harvesting applications. Energy Environ Sci2014; 7: 1670–1679.
39.
TsonosCSoinNTomaraG, et al.Electromagnetic wave absorption properties of ternary poly(vinylidene fluoride)/magnetite nanocomposites with carbon nanotubes and graphene. RSC Adv2015; 6: 1919–1924.
40.
Pedroso Silva SantosBRubio AriasJJJorgeFE, et al.Nanocomposites of poly(vinylidene fluoride) with oxide nanoparticles for barrier layers of flexible pipes. J Mater Res Technol2021; 15: 3547–3557.
41.
NathNKMohantaRRParidaRK, et al.Structural, morphological, and dielectric properties of poly(vinylidene fluoride)/(Bi0.5Ba0.25Sr0.25) (La0.5Ti0.5) 3 composites. J Appl Polym Sci2024; 141: 55729.
42.
ZhuCLiKLiuX, et al.Enhanced dielectric performance in PVDF-Based composites by introducing a transition interface. Polymers2025; 17: 137.
43.
PadurariuLBrunengoECanuG, et al.Role of microstructures in the dielectric properties of PVDF-Based nanocomposites containing High-Permittivity fillers for energy storage. ACS Appl Mater Interfaces2023; 15: 13535–13544.
44.
GoyalRKKatkadeSSMuleDM. Dielectric, mechanical and thermal properties of polymer/BaTiO3 composites for embedded capacitor. Composites Part B Engineering2012; 44: 128–132.
45.
TiwariVSrivastavaG. Effect of thermal processing conditions on the structure and dielectric properties of PVDF films. J Polym Res2014; 21: 587.
46.
PrasadSBhattacharjeeSBrahmaF, et al.Dielectric, thermal and optical properties of PVDF-based (LaFeO3)0.5 (BaTiO3)0.5 perovskite composite films for advanced technological applications. Ceram Int2024; 50: 40030–40050.
47.
ThakurAJangraMDamS, et al.Impedance studies of free-standing, flexible thin films of PVDF filled with gallium nitride nanoparticles. J Mater Sci Mater Electron2022; 33: 18658–18672.
48.
MeepornKThongbaiPMaensiriS, et al.Improved dielectric properties of PVDF composites by employing Mg-doped La1.9Sr0.1NiO4 particles as a filler. J Mater Sci Mater Electron2017; 28: 11762–11768.
49.
BarakerBMLoboB. Dielectric relaxation in a cadmium chloride-doped polymeric blend. Bull Mater Sci2019; 42: 18.
50.
DwivediSBadoleMGangwarK, et al.Relaxation processes and conduction behaviour in PVDF-TrFE and KNN-based composites. Polymer2021; 232: 124164.
