Dielectric Features Research Articles

Magnetoelectric, physicochemical, and cytotoxicity evaluations of Fluorouracil decorated Gd doped Co nano ferrites

Magnetic nano ferrites (MNFs) can arbitrate applied magnetic fields to generate the magnetic force effects and local magnetic fields, which are beneficial for biomedical applications. Spinel nano ferrites have been extensively used for biomedical applications because of their extraordinary nano-magnetism properties. The current work aims to prepare and analyse spinel nano ferrites (SNFs) for cancer cell treatment in biomedical applications. The biocompatibility of the (SNFs) would be improved by functionalizing with an anti-cancer drug. The current work reports the synthesis, structural, spectral, morphological, and electromagnetic evaluations of the Gd3+ doped Co nano ferrites (GCF) having the composition of CoFe2-xGdxO4 (x = 0.0, 0.025, 0.05, and 0.075). The nano ferrites of GCF were synthesized using the sol-gel method. The characterizations were carried out using XRD, FESEM, TEM, UV–Vis, and FTIR respectively. XRD reveals a single-phase cubic phase of Co ferrites, whereas Gd-doped shows extra peaks of GdFeO3. VNA and VSM to find GCF nano ferrites' dielectric and magnetic features. FESEM and TEM images confirm the spherical and hexagon-shaped nanoparticles. The low coercivity with high magnetization was investigated for Co ferrites rather than Gd3+ doped Co nano ferrites. GCF particles were functionalized with an anti-cancer drug (5-Fluorouracil (FU)) to investigate the cytotoxicity and cell viability against a human breast cancer cell line (MFC-7). Cytotoxicity study of Gd substituted Co ferrites (GCF) was also evaluated. The present results depicted that 5-FU-coated GCF particles were more toxic and killed almost 21–66% of cancer cells. It is expected that the Co nano ferrites will be found to be less harmful and suitable for cancer cell treatment in biomedical applications.

Comparative analysis of the optical and electrical properties of PVA/PVP blended polymer with ZnCo2O4/CdS nanocomposites for optoelectronic and dielectric capacitor applications

Polymer nanocomposite blends were produced using solution casting, hydrothermal and thermolysis techniques. The blends were composed of a polymer blend consisting of polyvinyl alcohol (PVA) and polyvinyl pyrrolidone (PVP) as the organic host matrix with (1−x)ZnCo2O4–xCdS as filler samples. The current study investigated the morphological, structural, optical, and dielectric features of PVP/PVP/(1-x)ZnCo2O4/xCdS blends. The crystallite size and the phases formed in the fillers were obtained using Rietveld method. The structure and morphology of blended samples were studied using X-ray diffraction and scanning electron microscope techniques. The results of the optical properties imply that the linear and nonlinear optical parameters were affected by the amount of CdS in the (1-x)ZnCo2O4/xCdS filler samples. The direct allowed, indirect allowed, direct forbidden and indirect forbidden transitions values were reduced to 5.09, 4.55, 4.67 and 4.12 eV, respectively, as (1-x)ZnCo2O4/xCdS with x = 0.05 was incorporated into the PVA/PVP blend. The nature of electronic transitions in all blends were also studied. The fluorescence intensity, emitted colors and purity of the doped PVA/PVP blend are affected by the amount of CdS in the fillers and the excitation wavelength. The energy density of the host blend was improved as it loaded with fillers contained 5 and 10 % CdS in the frequency range beyond 1 kHz. The relaxation times of all doped blends were diminished except blend contained 25% CdS, the relaxation time rose slightly as compared with the relaxation time of undoped blend. The obtained properties indicates potential utility of the doped blends in photocatalytic, photonic, storage energy and optoelectronic applications.

Monte Carlo Investigation of Dielectric Characteristics in Silicene–Germanene Nanosystem with Junction Connection

In this study, Monte Carlo investigation delves into the dielectric features of silicene–germanene nanosystem with junction connection. We emphasized the profound influence of physical parameters, coupling between Si–Si and Ge–Ge atoms and temperature, on these dielectric features. Our results highlight the pivotal role of the coupling parameter between Ge atoms in influencing blocking temperatures, underlining the significance of high values for spin and coupling parameters for achieving a high blocking temperature and delaying transitions. Furthermore, our analysis of electric hysteresis loops demonstrates their sensitivity to parameter variations, which can offer valuable insights for nanoelectronics and materials science applications.

Ameliorating and tailoring the morphological, structural, and dielectric features of Si3N4/CeO2 futuristic nanocomposites doped PEO for nanoelectronic and nanodielectric applications

Ameliorating and tailoring the morphological, structural, and dielectric features of Si3N4/CeO2 futuristic nanocomposites doped PEO for nanoelectronic and nanodielectric applications

Tailoring Tamm Plasmon Resonances in Dielectric Nanoporous Photonic Crystals.

The fields of plasmonics and photonic crystals (PCs) have been combined to generate model light-confining Tamm plasmon (TMM) cavities. This approach effectively overcomes the intrinsic limit of diffraction faced by dielectric cavities and mitigates losses associated with the inherent properties of plasmonic materials. In this study, nanoporous anodic alumina PCs, produced by two-step sinusoidal pulse anodization, are used as a model dielectric platform to establish the methodology for tailoring light confinement through TMM resonances. These model dielectric mirrors feature highly organized nanopores and narrow bandwidth photonic stopbands (PSBs) across different positions of the spectrum. Different types of metallic films (gold, silver, and aluminum) were coated on the top of these model dielectric mirrors. By structuring the features of the plasmonic and photonic components of these hybrid structures, the characteristics of TMM resonances were studied to elucidate effective approaches to optimize the light-confining capability of this hybrid TMM model system. Our findings indicate that the coupling of photonic and plasmonic modes is maximized when the PSB of the model dielectric mirror is broad and located within the midvisible region. It was also found that thicker metal films enhance the quality of the confined light. Gas sensing experiments were performed on optimized TMM systems, and their sensitivity was assessed in real time to demonstrate their applicability. Ag films provide superior performance in achieving the highest sensitivity (S = 0.038 ± 0.001 nm ppm-1) based on specific binding interactions between thiol-containing molecules and metal films.

Mn-enhanced Li-Ni-Mn-Zn nano-ferrites: Synthesis, characterization, and evaluations of structural, morphological, magnetic, and dielectric features

Applying an established technique known assol–gel autocombustion, Mn-enhanced Li-Ni-Mn-Zn (LNMZ) ferrite nanoparticles with nominal compositions of Li0.15Ni0.20Mn0.10+xZn0.40-xFe2.15O4, where x = 0.00 to 0.10 in the step of 0.05, were synthesized in this investigation. Prepared disk- and toroid-shaped specimens were sintered in the air for 5 hours at different temperatures. The XRD was utilized to examine structure-related indicators like phase identification, crystallite size, and the lattice constant of the samples. The crystallite size of the specimens was in the range of 41 to 46 nm, which was calculated at the sintering temperature (TS) of 1523 K. Theoretical and bulk densities declined with enhanced Mn concentration, whereas the lattice constant and porosity improved slightly. As expected, density rises and porosity decreases with increasing TS (from 1373 to 1523 K). The average grain diameter was found to increase with increasing Mn2+ ions, which was determined by the linear intercept technique. For the maximum Mn2+ ions (x = 0.10) of this investigation at TS = 1523 K, the real part of initial permeability achieves its largest value (=439), and improves 27% in comparison with the preliminary composition (x = 0.00). For the same sample, the relative quality factor, significantly enhanced, reaches the highest value (=20015), which is 60% larger compared to the parent composition of the LNMZ ferrites. With the addition of the Mn content, the Néel temperature declines from 573 to 558 K. The real part of the dielectric constant, dielectric loss tangent, the real part of the impedance, the Cole-Cole plots, and ac conductivity were analyzed to disclose the facts about the dielectric features of the current LNMZ nano-ferrite materials.

Reactive Vapor-Phase Inhibitors for Area-Selective Depositions at Tunable Critical Dimensions.

Area-selective depositions (ASD) take advantage of the chemical contrast between material surfaces in device fabrication, where a film can be selectively grown by chemical vapor deposition on metal versus a dielectric, for instance, and can provide a path to nontraditional device architectures as well as the potential to improve existing device fabrication schemes. While ASD can be accessed through a variety of methods, the incorporation of reactive moieties in inhibitors presents several advantages, such as increasing thermal stability and limiting precursor diffusion into the blocking layer. Alkyne-terminated small molecule inhibitors (SMIs)─propargyl, dipropargyl, and tripropargylamine─were evaluated as metal-selective inhibitors. Modeling these SMIs provided insight into the binding mechanism, influence of sterics, and complex polymer network formed from the reaction between inhibitors consisting of alkene, aromatic, and network branchpoints. While a significant contrast in the binding of the SMIs on copper versus a dielectric was observed, residual amounts were detected on the dielectric surfaces, leading to variable ALD growth rates dependent on pattern-critical dimensions. This behavior can be controlled and utilized to direct film growth on patterns only above a critical threshold dimension; below this threshold, both the dielectric and metal features are protected. This method provides another design parameter for ASD processes and may extend its application to broader-ranging device fabrication schemes.

Study the effect of nano NiCo2O4 doping on the optical and dielectric properties of PMMA/PEO/MWCNTs

In this study, NiCo2O4 nanoparticles were prepared using a hydrothermal process and examined by x-ray diffraction. After that, using the casting technique, blends of polymethyl methacrylate (PMMA)/poly(ethylene oxide) (PEO) were loaded with multi-walled carbon nanotubes (MWCNTs) and different amounts (x) of NiCo2O4 nanoparticles. The obtained blends were characterized using X-ray diffraction and scanning electron microscopy techniques. Utilizing diffuse reflectance measurements, various optical parameters, including energy gap, refractive index, extinction coefficient, optical dielectric constant, optical conductivity, and nonlinear optical parameters, were investigated. Following incorporation of MWCNTs/NiCo2O4 in the blend, the transmittance of the PMMA/PEO blend (90 %) displayed a drop reaching 21 %, the reflectivity and refractive index increased. The direct/indirect optical band gap values of PMMA/PEO (5.07/4.8 eV) decreased attaining 4.96/4.54 eV for the blend with 2.5 wt% NiCo2O4. The optical conductivity greatly enhanced, and the linear and nonlinear optical parameters increased as the amount of NiCo2O4 doping increased. The dispersion parameters for all blends were also calculated. Fluorescence spectra (FL) measurements revealed a reduction in the FL intensity with increasing the NiCo2O4 content (x). Through the dielectric measurements, the impact of increasing NiCo2O4 content on the ac conductivity, dielectric properties, energy density, and electric modulus was analyzed for all blends. Remarkably, a significant increase in AC conductivity was obtained upon loading with 1.5 wt% NiCo2O4. Overall, variation in the dielectric and optical features of the PMMA/PEO/MWCNTs/x wt.% NiCo2O4 blends makes them appropriate for optoelectronic and energy storage applications.

Niobium modification on dielectric, magnetic and structural features of nanocrystalline Ni–Co ferrites

Niobium modification on dielectric, magnetic and structural features of nanocrystalline Ni–Co ferrites

Dielectric, physicochemical, and reflection loss features of Gd-substituted W-type hexaferrites for microwave absorption application

Dielectric, physicochemical, and reflection loss features of Gd-substituted W-type hexaferrites for microwave absorption application

Piezoelectric thin Film Composites with BaTiO3 for Microelectronics

The piezocomposites from poly-(vinylidene fluoride) (PVDF) with BaTiO3 (BT) are largely presented in literature, but the composites from polydimethylsiloxane (PDMS) with BT consist a very new scientific preoccupation. The novelty of the paper lies in a new simpler route of preparation of the two composites with PDMS and respectively PVDF matrix, with tailored deposition on specific substrates for microelectronic use (e.g. indium-tin-oxide ITO/glass, Si/Pt, polyethylene terephthalate PET), along with an extensive comparation of their dielectric features, a consistent comparison of the influence of polymer matrix upon the piezoelectric features, and a demonstration of direct use for microelectronic applications of the composites of BT with PDMS. An interesting effect is observed around 100 kHz domain, determined by the activity and architecture of BT particles mainly for the BT-PDMS composites, which induce an additional ionic-dipolar conjugated polarization, as a displacement due to the balance between the resonance and anti-resonance frequency. Such phenomena explain the potential use of such composites as resonators/filters, and BT-PDMS composites should be further investigated for tailored applications in radiofrequency electronic field. We can appreciate that superior piezoelectric features are offered by the composites of BT with PDMS, comparing to the composites with PVDF, which means that the composites of BT with PDMS were worth to study, leading to more versatile variants of electronic characteristics and with superior values.

A comprehensive study on structural, optical, electrical, and dielectric properties of PVA-PVP/Ag-TiO2 nanocomposites for dielectric capacitor applications

Nanocomposites made from polymers and nanoparticles (NPs) have a wide range of uses. Herein, the polymer nanocomposite electrolyte films were prepared by blending polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP) with hybrid NPs of silver (Ag) and titanium dioxide (TiO2). The structural, optical, electrical, and dielectric properties of the resulting PVA-PVP/Ag-TiO2 nanocomposite electrolytes were analyzed. XRD analysis revealed that the PVA-PVP blend had a semicrystalline structure, and the addition of hybrid NPs reduced the crystallinity ratio. FTIR analysis showed that the intensity decreased as the content ratio of hybrid NPs increased. Optical measurements showed that the nanocomposite electrolyte samples' direct and indirect optical energy gap decreased with the increasing content of hybrid NPs. The electrical conductivity also increased with the hybrid NPs' content, likely due to the higher conductivity of the hybrid NPs compared to the polymer blend matrix's electrical conductivity. The dielectric constant (εr) and dielectric loss (εi) increased with the concentration of hybrid NPs at lower frequencies, indicating the polarization effects of space charges. The capacitance–frequency (C–f) and conductance–frequency (G/ω–f) curves of the prepared polymer nanocomposites exhibited a discernible enhancement correlating with the increased content of Ag-TiO2 nanofillers. The impedance spectroscopy data were analyzed using Nyquist plots, which showed a single semicircular arc whose radius of curvature decreased with increasing the hybrid NPs loading, indicating a decrease in the overall impedance of the nanocomposite electrolytes with the mixed NPs loading. The impedance reduction and dielectric feature increase were attributed to the interfacial polarization between the hybrid NPs and the polymeric matrix. These findings suggest that the PVA-PVP/Ag-TiO2 nanocomposite electrolytes could be used for thin-film dielectric capacitor applications.

Prediction of the Apple Sugar Content of Multiple Varieties by Dielectric Spectroscopy

Highlights Explore two distinct types of frequency features: optimal frequency and full frequency. Utilize a one-dimensional convolutional neural network (1D-CNN) to classify varieties of apples, employing dielectric spectroscopy features as inputs. Establish models for predicting apple sugar content in various hybrids. Develop an optimal multi-variety search model by integrating a variety recognition model, an individual-variety prediction model, and a classification-first search strategy for accurate soluble solids content (SSC) prediction. Abstract. As a non-destructive detection technology, dielectric spectroscopy encounters challenges when attempting to detect apple sugar content, particularly when aiming to predict sugar content accurately. Variety-specific models may be necessary due to the distinct composition and cell structures present in different apple varieties. Consequently, a single algorithm may prove insufficient for predicting sugar content with precision. Therefore, it becomes imperative to achieve precise sugar content detection across various apple varieties. In the present study, we conducted an analysis of spectral data obtained from apple samples through dielectric spectroscopy. Leveraging these dielectric spectra as input variables, we devised a multi-variety model for predicting apple sugar content. Within this model, the successive projections algorithm (SPA) method was employed to select and optimize the frequency variables. Furthermore, a one-dimensional convolutional neural network (1D-CNN) was applied to the established variety classification model, and the PLS method was employed to develop the individual-variety and hybrid apple sugar content prediction models. When compared to the other two models, the multi-variety model demonstrated superior accuracy in predicting sugar content across various apple varieties. The R2 p and RMSEP overall prediction sets were 0.915 and 0.00147° Brix, respectively. Meanwhile, the lower values of RMSEP in the other three varieties were 0.0015, 0.0012, and 0.0017° Brix, respectively. This finding indicated that the proposed multi-variety search model was sensitive to variety differences in the prediction of apple sugar content. Therefore, it could improve the accuracy and stability of apple sugar prediction. Keywords: Apple sugar content, Deep learning, Dielectric spectroscopy, Multi-variety search model.

Fabrication and unraveling the morphological, structural, and dielectric features of PMMA-PEO-SiC–BaTiO3 promising quaternary nanocomposites for multifunctional nanoelectronics applications

Fabrication and unraveling the morphological, structural, and dielectric features of PMMA-PEO-SiC–BaTiO3 promising quaternary nanocomposites for multifunctional nanoelectronics applications

Crystal structural, magnetic, and dielectric properties of Cobalt−doped breathing pyrochlore LiInCr4−xCoxO8

Here, the structural, magnetic, and dielectric features of breathing pyrochlore LiInCr4−xCoxO8 were investigated. The XRD analysis showed changes in Cr–Cr length and distorted CrO6 octahedral as Co ion doping level rises. The x-ray photoemission spectroscopy measurements showed that there are both Co2+ and Co3+ ions in the LiInCr4−xCoxO8 compounds. The difference between temperature-dependent magnetization curves during field cooling and zero-field cooling suggested that there is a spin-glass state, which was verified by the heat capacity measurement. Doping affects the bond length, which affects the magnetic properties and electronic properties. The dielectric characteristics were systematically studied, and the temperature dependence of the dielectric loss and dielectric constant was examined in the temperature range of 323−573 K at various frequencies. The dielectric behavior strongly changes with the change in temperature and/or frequency. The activation energies of grain boundary resistance of doped samples show a decreasing trend with increasing doping.

Evaluating the Thermal Stability, Morphological and Temperature Effect on Electrical Conductivity, and Dielectric Properties of Curcumin Nano-Crystals

The thermal structure and morphology of 1,7-bis(4-hydroxy-3-methoxyphenyl)−1,6-heptadiene-3,5-dione (curcumin) nanocrystals were investigated deploying thermogravimetric and FESEM, respectively. The mass loss was identified between 509–673 K. FESEM micrographs of powder curcumin revealed a fluffy cotton-like morphology with a nearly spherical shape in nanoparticle scale. In addition, the AC conductivity and dielectric features of curcumin as a disk have been examined across a wide frequency range and at various temperatures. Jonscher’s relation can be applied to interpret the frequency dependence of AC electrical conductivity. According to the behavior of frequency exponent S, the correlated barrier hopping model is the predominant mechanism. Indeed, the low values of activation energy endorsing the hopping mechanism. The findings show that the maximum barrier height estimated as 0.345 eV. In addition, the impact of frequency and temperature on the dielectric constant, ε′, and dielectric loss, ε″, were inspected as was the complex dielectric modulus. According to KWW formula, the Kohlrausch exponent value was estimated as 0.57 at 313 K and rises to 0.67 at 393 K.

The impact of Bi3+ ions on magnetization, dielectric parameters, and conductivity of soft Mg-Cu ferrite nanoparticles

This paper investigates the bismuth ions leverage on magnetic and dielectric features of magnesium–copper nanoferrites Mg0.5Cu0.5BixFe2-xO4 (MCBF). The Mg0.5Cu0.5Bi0.1Fe1.9O4 nanoferrite exhibits superior magnetic properties compared to the pure Mg-Cu sample. These properties include a higher magnetization of 31.31 emu/g, with an enhancing ratio of 1.50 %. Additionally, it demonstrates a higher initial permeability of 17.84, with an enhancing ratio of 55.12 %. Furthermore, their coercivity is lower at 59.90 Oe, with an enhancing ratio of 50 %. All MCBF nanoferrites exhibit a high-frequency response between 6.106 and 6.926 GHz, making them suitable for microwave technology. The dielectric parameters dispersion shows normal behavior at different frequencies and temperatures. As for dielectric parameters dependence on Bi content, it exhibited a peculiar manner. At a temperature of 297 K and a frequency of 50 Hz, the nanoferrite Mg0.5Cu0.5Bi0.1Fe1.9O4 exhibits superior dielectric properties compared to the pure Mg-Cu sample. Specifically, it demonstrates the highest dielectric constant of 360.68, with an enhancing ratio of 125.97 %. Additionally, it displays the highest conductivity of 691.4 µ(Ω.m)-1, with an enhancing ratio of 1543.23 %. Furthermore, the nanoferrite exhibits a lower dielectric loss of 6.49, with an enhancing ratio of 80.22 % compared to the pure Mg-Cu sample. The conduction mechanism of the Mg0.5Cu0.5BixFe2-xO4 nanoferrites was determined by fitting the σac results via the Jonscher power law. This conduction mechanism is attributed to correlated barrier hopping (CBH) model up to 473 K, followed by small polaron tunneling (SPT), which reaches higher temperatures. Hence, the Mg0.5Cu0.5Bi0.1Fe1.9O4 nanoferrite has a remarkable magnetic and dielectric nature, which can be used as functional soft ferrite material in transformers and high-frequency electronic devices.

Boosted visible light dye-decontamination and colossal dielectric constant features of Bi2O3: Role of In, Cu and Li-dopants

This study focused on improving the optical, dielectric properties, and photocatalytic efficiency of Bi2O3, a prominent photocatalyst with challenges like limited visible light absorption and rapid electron-hole pair recombination. Using an adapted sol-gel technique, pure Bi2O3, In, Cu and Li-doped Bi2O3 visible-light-driven photocatalyst were synthesized. X-ray diffraction (XRD) confirmed monoclinic Bi2O3 formation. The inclusion of In, Cu, and Li ions into the Bi2O3 lattice was evidenced by alterations in diffraction peak intensities, lattice parameters, and changes in average crystallite size. Vibrational spectra corroborated the formation of pure α-Bi2O3 with slight shifts in transmittance bands, aligning with the XRD findings. Morphological investigation via scanning electron microscopy (FE-SEM-EDX) confirmed the purity of the synthesized nanocompositions and unveiled that the doping induces distinct morphological changes in Bi2O3 nanoparticles, resulting in increased porosity and formation of round and needle-like shapes (In-doped), coalescence of particles (Cu-doped), and fused agglomerates with altered particle size distribution (Li-doped). Optical analysis demonstrated a red shift in the band gap energy of α-Bi2O3 (initially 2.90 eV), with In, Cu, and Li doping, resulting in band gaps of 2.77 eV, 2.78 eV, and 2.88 eV, respectively, accompanied by high refractive indices exceeding 2.0, rendering them suitable for optical applications. Both Cu and Li doping led to enhanced relative permittivity (εʹ) values, with the Li-doped sample displaying remarkable εʹ values at low frequencies (up to 1000 Hz). The In, Cu and Li doping has the effect of reducing PL (photoluminescence) emission intensity while simultaneously diminishing radiative recombination and promoting the separation of photogenerated charge carriers. The doped samples demonstrated superior degradation performance, with In-doped and Cu-doped samples achieving degradation efficiencies of 99% and 91%, respectively, within 180 min. This remarkable performance can be attributed to their visible-light-responsive band gaps, increased electron-hole trapping sites, and distinct morphological features.

Preparation and tuning the optical and electrical properties of polyethylene oxide/polyvinyl alcohol/poly(3,4-thylenedioxythiophene): polystyrene sulfonate/CuO-based quaternary nanocomposites for futuristic energy storage devices

Polymeric nanocomposites have important industrial and scientific applications because they are flexible, multifunctional, and highly intelligent. Using the solution-casting technique, copper oxide nanoparticles (CuO NPs) of different concentrations (0.4, 0.8, 1.2, and 1.6 wt% to the host blend weight) were added to polymer nanocomposite films made of polyethylene oxide, polyvinyl alcohol, and poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEO/PVA/PEDOT: PSS) blend. According to TEM and XRD studies, the CuO NPs of a size range of 20 to 60 nm were extremely pure and had a monoclinic structure. The PEO/PVA/PEDOT: PSS blend's semicrystalline character was reduced by the additional CuO NPs through interactions between the functional groups of blend and nanofiller, according to XRD and FTIR measurements. By adding more CuO NPs, the samples' optical bandgap energies, and UV/visible absorption spectra showed considerable changes. The electrical conductivity, impedance, and dielectric features of the samples were assessed at various frequencies, from 10−1 to 107 Hz. AC conductivity, dielectric permittivity, and dielectric loss all steadily improved as CuO NPs content rose and low permittivity at the high frequencies depicted the favourable nanodielectric features of these hybrid films. The equivalent electrical circuit using the impedance components Z′ and Z″ was introduced. The controllable optical energy gaps, frequency-dependent AC conductivity, and a large extent of composition tuneable permittivity implied the utility of PEO/PVA/PEDOT: PSS/CuO nanocomposites in developing flexible optoelectronic and energy storage devices.

Comparison of Leakage Property with Varying Lanthanum Doping in (BiFeO3) 0.5-(baTiO3) 0.5

The new La doped BiFeO3-BaTiO3perovskite oriented material is synthesized through solid state reaction route technique at an optimized temperature 11000C. The structural investigation through XRD technique suggesting the phase of the materials are orthorhombic and tetragonal. The dielectric investigation through the shifting of tangent of loss and dielectric coefficient with frequency over a specific range of temperature gives indication of overall good dielectric feature of the material. Besides NTCR feature of the material is identifies through impedance spectroscopy. The leakage feature investigated through I-V characteristic technique suggesting good insulating property of the material for device fabrication and the effect of the property with increasing doping.