Ac Conductivity Values Research Articles

Spectroscopic, dielectric dispersion and dc conductivity studies of Sb2O3doped lithium fluoro borophosphate glasses mixed with small concentrations of NiO

Glasses of the composition(20–x) LiF–10 Sb2O3–10 B2O3–60P2O5: x NiO(0 < x < 0.25) were synthesized by conventional rapid melt quenching method. The non–crystalline nature of the samples was confirmed by XRD analysis and the glass forming abilities were analyzed by DTA studies. The compositional dependence of structural aspects of the glasses was analyzed by FT–IR and Raman studies. The DTA, FT–IR and Raman studies suggested an increasing degree of disorder in the glass network with increasing concentration of NiO up to 0.20 mol %. The reversal trend observed beyond 0.20 mol% is attributed to an increasing polymerization of glass network. The optical absorption (OA) and photoluminescence (PL) studies were also carried on these glasses. The results of OA and PL spectral studies suggested that the gradual increase of octahedral Ni2+ ions with the increase in the concentration of NiO up to 0.20 mol%. Electrical properties viz., dielectric dispersion, DC and AC conductivity of the titled glass samples were also performed on titled glass samples. The observed increase in the values of dielectric constant, dielectric loss and AC conductivity (at any frequency and temperature) with the increase in the concentration of NiO up to 0.20 mol%is ascribed to the increasing space charge polarization in the glass network. The results of conductivity studies indicated that there is a mixed conduction (both ionic and polaronic) and the polaron hopping seems to prevail over ionic conduction in the glasses containing less than 0.20 mol% of NiO.

Frequency-Dependent Dielectric Parameters of Au/TiO2/n-Si (MIS) Structure

In this study, thin film of titanium dioxide (TiO2) was deposited onto n-type silicon substrate by radio frequency (RF) magnetron sputtering system. The admittance (capacitance and conductance) measurements were performed in the frequency range of 500 Hz - 500 kHz and at room temperature. The dielectric parameters such as dielectric constant (e′), loss (e″), loss tangent (tan δ), ac conductivity (σac) and complex modulus (M∗) of the MIS structure were obtained from these measurements. While the C value decreases with an increase of the frequency, the G increases. The change in C and G with frequency is attributed to the presence interface states. The value of e′ and e″ decreases with increasing frequency. On the other hand, the value of ac conductivity increases with increasing frequency.

Influence of cobalt ions on spectroscopic and dielectric properties of Sb2O3 doped lithium fluoroborophosphate glasses

Glasses with compositions (20–x) LiF–10 Sb2O3–10 B2O3–60 P2O5: x CoO (0 < x < 0.25) were synthesized by conventional rapid melt quenching method. The non–crystalline nature of the samples was confirmed by XRD analysis and the glass forming abilities were analyzed by DTA studies. The compositional dependence of various structural vibrational units was analyzed by FT–IR and Raman studies. The DTA, FT–IR and Raman studies suggested a higher degree of disorder in the glass network with increasing concentration of CoO up to 0.15 mol%. The reversal trend has been observed beyond 0.15 mol% suggesting an increasing polymerization of glass network. The optical properties of LiF–Sb2O3–B2O3–P2O5: CoO glasses were analyzed by optical absorption and photoluminescence studies. The observations from OA and PL spectral studies suggested that the gradual increase of octahedral Co2+ ions with the increase in the concentration of CoO up to 0.15 mol%. At higher concentration i.e. above 0.15 mol% of CoO, there was a reduction in the concentration of octahedral Co2+ ions. The electrical properties of the glass samples were studied by both DC and AC conductivity studies. The dielectric dispersion analysis was also performed on the prepared glass samples. The results of these studies indicated that there is a mixed conduction (both ionic and polaronic) and the polaron hoping seems to prevail over ionic conduction in the glasses containing CoO less than 0.15 mol%. The increasing space charge polarization is responsible for enhanced values of dielectric constant, dielectric loss and AC conductivity for all frequency and temperature ranges with the increase in concentration of CoO up to 0.15 mol%.

Low temperature ferromagnetic behavior and temperature dependent anomalous dielectric relaxation of Zn0.90Ni0.05Mn0.05O diluted magnetic semiconductor

We report structural, magnetic and temperature dependent dielectric properties of diluted magnetic semiconductor Zn0.90Ni0.05Mn0.05O prepared by solid state reaction technique. X-ray diffraction analysis revealed formation of single phase hexagonal wurtzite structure. Scanning electron microscopy and atomic force microscopy images indicated increase in grain size and roughness respectively with increasing sintering temperature. Field dependent DC magnetization at low temperature exhibited ferromagnetic ordering with coercivity ~ 6 × 104 A/m and remanence ~ 17 A/m. Complex initial permeability values were found to be positive for the measurement frequency range (1 kHz–120 MHz) with a relaxation at lower frequency. Temperature dependent DC magnetization and AC susceptibility followed curie law with curie temperature below 65 K. Temperature dependent dielectric constants ($$\varepsilon ^{\prime}\,\& \,\varepsilon ^{\prime\prime}$$) and loss tangents ($$tan\delta$$) measured for selected frequencies were found to be an increasing function of temperature and decreasing function of frequency. AC conductivity ($${\sigma }_{ac}$$) values were found to be an increasing function of frequency and temperature. Clear signatures of relaxations were observed in $$\varepsilon ^{\prime},\,\varepsilon ^{\prime\prime},$$ $$tan\delta$$ and $${\sigma }_{ac}$$ for temperatures above 200 °C.

A facile one-step hydrothermal synthesis of HfO2/graphene nanocomposite and its physio-chemical properties

A facile one-step hydrothermal synthesis of Hafnium oxide/Graphene (HfO2/Gr) Nanocomposite was successfully synthesized. The crystallinity index and the overall phase transformation process during the synthesis process was observed using x-ray diffraction (XRD) pattern. The surface morphology of the prepared composite was analyzed using Scanning electron microscopy (SEM). Transmission electron microscopy studies (HR-TEM) were conducted to measure the particle sizes. The presence of different types of functional groups was confirmed using FT Raman spectroscopy. UV–Visible spectrum analysis with optical ingestion was conducted to observe the optical properties of the prepared sample. The dielectric properties and conductivity of the prepared sample were investigated whereby the frequencies and the temperatures were altered. The results showed that both the phenomenon of the dielectric consistent and the dielectric loss were frequency and temperature dependent. The thermal conductivity behavior of the prepared samples was checked by calculating AC conductivity values at various temperatures.

Influence of Mn2+ ions on optical and electrical properties of Sb2O3 mixed lithium fluoro borophosphate glasses

Glasses with composition of (20–x)LiF–10Sb2O3–10B2O3–60P2O5:x MnO (0< x <0.5 mol%) were synthesized. The non-crystalline nature of the samples was confirmed by XRD analysis and the glass forming abilities were analyzed by DTA studies. The compositional dependence of various structural vibrational units was analyzed by FT–IR and Raman studies. DTA, FT–IR and Raman studies suggested a higher degree of disorder in the glass network with increasing concentration of MnO up to 0.3 mol %. The reversal trend has been observed beyond 0.3 mol% suggesting an increasing polymerization causing lower degree of disorder in the glass network. The optical properties of LiF–Sb2O3–B2O3–P2O5: MnO glasses were analyzed by optical absorption, photoluminescence and ESR spectra. The observations of ESR, OA and PL spectral studies suggested that the gradual increase of octahedral Mn2+ ions with the increase in the concentration of MnO up to 0.3 mol%. At higher concentration i.e. above 0.3 mol% of MnO, there was a reduction in the concentration of octahedral Mn2+ ions. The electrical properties of the glass samples were studied by both DC and AC conductivity studies. The dielectric dispersion analysis was also performed on the prepared glass samples. The results of these studies indicated that there is a mixed conduction (both ionic and polaronic) and the polaron hoping seems to prevail over ionic conduction in the glasses containing MnO less than 0.3 mol%. The increase in space charge polarization is responsible for enhanced values of dielectric parameters and AC conductivity for all frequency and temperature ranges.

Synthesis and Characterisation of Superparamagnetic MgFe2O4 Nanoferrite

Nanocrystalline MgFe2O4 with crystallite size of 10.4 nm was synthesised using combustion method and characterised for structural, electrical, and magnetic properties. The powder X-ray diffraction analysis reveals the single-phase nature of MgFe2O4. The field emission scanning electron microscopy image shows the nanosized grains. The magnetic study reveals the superparamagnetic behaviour of MgFe2O4 with saturation magnetisation value of 14.57 emu/g. The blocking temperature is determined using low-temperature magnetic measurement which is equal to 139 K. Electrical study shows that the value of AC conductivity at 1 Hz is 1.12 × 10− 8 S/cm at 303 K and increases with frequency as well as temperature. The complex impedance analysis shows the grain and grain boundary resistance equal to 6.23 × 106 Ω and 1.27 × 107 Ω, respectively. The complex electric modulus analysis confirms the presence of two relaxation processes in nanocrystalline MgFe2O4.

Frequency and temperature dependent electrical and dielectric properties of LaCrO3 and Ir doped LaCrO3 perovskite compounds

Perovskite oxide materials, especially perovskite lanthanum chromium oxide, LaCrO3 (LCO) have taken considerable attention among the scientists due to the changing optical, electrical, dielectric and magnetic properties depending on doping via various elements. In this study, the LCO and iridium (Ir) doped LCO (LaCr1-xIrxO3) (x = 0.10) compounds were synthesized using solid-state reaction method. Scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS) have been employed to study particle morphologies and oxidation states of synthesized powders, respectively. Frequency-depended electrical/dielectric properties of perovskite oxide samples were performed in wide range frequency (1Hz-10 MHz) and temperature (−100 °C to +100 °C) using dielectric/impedance spectrometer. Electrical measurements have underscored that the dielectric constant of LCO compound dramatically decreased after doped with Ir. Furthermore, it was observed that ac conductivity and capacitance value of LCO decreased while impedance increased after Ir doping due to i) Ir occupation in Cr sites and ii) lattice distortion owing to doping larger ion Ir4+ into smaller Cr3+ ion in the LCO lattice. Finally, overlapping large polaron tunneling (OLPT) and quantum mechanical tunneling (QMT) conduction mechanisms were suggested for LCO while the correlated barrier hopping (CBH) and QMT conduction mechanisms were observed for Ir doped LCO compound. Moreover, the activation energy values have been calculated by employing both fmaxvs. 1/T and σdcvs. 1/T plots. It has been shown those energy values are in good agreement with each other for LCO and Ir doped LCO samples at various temperature ranges.

Effects of sintering temperature on electrical properties of sheep enamel hydroxyapatite

Bioceramics, especially calcium phosphate based bioceramics, whose examples are hydroxyapatite, and calcium phosphate powders have been widely used in the biomedical engineering applications. Hydroxyapatite (HA) is one of the most promising biomaterials, which are derived from natural sources, chemical method, animal like dental enamel and corals. The influence of sintering temperature on the electrical properties (i.e. DC conductivity, AC conductivity) of samples of sintered sheep enamel (SSSE) was studied in air and in vacuum ambient at room temperature. The sheep enamel were sintered at varying temperatures between 1000°C and 1300°C. DC conductivity results revealed that while dc conductivity of the SSSE decreases with increasing the sintering temperature in air ambient the values increased with increasing the sintering temperature in vacuum ambient. AC conductivity measurements were performed in the frequency range of 40 Hz - 105 Hz. The results showed that ac conductivity values decrease with increasing the sintering temperature.

Structural and temperature dependent dielectric behavior of Cr and Zn doped MnFe2O4 nano ferrites

The Mn0.5Zn0.5Fe2O4 and Mn0.5Cr0.5Fe2O4 ferrites were synthesized by low temperature sol gel auto combustion method. The laboratory and Synchrotron x-ray diffraction confirms the formation of face centered cubic structure with Fd-3m space group. Particle sizes as calculated from Synchrotron (laboratory) source discern decreasing value 14.85 (15.17) nm in Mn0.5Zn0.5Fe2O4 ferrites, however an enhanced particle size of 27.67 (19.88) nm is seen for Mn0.5Cr0.5Fe2O4. The dielectric constant (dielectric loss) is 400 (7.88) for Mn0.5Zn0.5Fe2O4 and 1.1 × 104 (0.6) for Mn0.5Cr0.5Fe2O4 ferrites at 300 K and at 100 Hz and found to have increasing value with temperature and frequency. The increase in the value of ac conductivity is also observed with the increase in temperature and frequency. The activation energy for Mn0.5Zn0.5Fe2O4 (Mn0.5Cr0.5Fe2O4) ferrite is 0.42 (0.44) eV at 100 Hz and 0.22 (0.23) eV at 1 MHz, respectively. These observations indicate that Cr doping is more useful in device application as compared to Zn in MnFe2O4.

Dielectric relaxation behavior of exfoliated graphite nanoplatelets filled ethylene vinyl acetate copolymer and ethylene propylene diene terpolymer blend

Exfoliated graphite nanoplatelets(xGnP) filled 50:50 blend of ethylene vinyl acetate copolymer(EVA) and ethylene propylene diene terpolymer (EPDM) composites were prepared by solution casting followed by compression moulding method. The microstructure, dielectric characteristics and conducting behaviour were investigated as function of xGnP loading and frequency range of 102 to 5 × 106Hz. Dielectric constant increases with increase in xGnP loading and showed maximum value at 10 phr loading and then decreases with increase in xGnP loading. The enhancement of dielectric constant is due to Maxwell–Wagner–Sillars (MWS) interfacial polarization between the exfoliated graphite nanoplatelets and EVA/EPDM polymer blend interfaces. From Nyquist plot it is observed that with increase in xGnP loading beyond 6 wt% semicircles are obtained which become prominent above 8 wt% loading. AC conductivity values increases with increase in xGnP loading and a percolation threshold of 6 wt% was observed for EVA-EPDM (50:50) blend system which is much lower than the EVA-xGnP as well as EPDM-xGnP systems. The non-linear current–voltage(I–V) characteristics below the percolation threshold is obtained which is due to tunnelling and at higher xGnP loading, a liner I–V characteristic is due to direct contact between the xGnP nanoplatelets.

Synthesis and transport properties of Al substituted langasite ceramics

This paper reports the study of structural, morphological and dielectric properties of pure and Al substituted Langasite (La3Ga5−xAlx SiO14, x = 0, 0.2, 0.4, 0.6 and 0.8) ceramics, prepared at 1400 °C by solid state reaction method. Phase purity, structure and crystallinity of all the samples were investigated by powder X-ray diffraction study which confirmed the Langasite (LGS) type structure for the synthesized samples. Al substituted ceramics exhibited low dielectric constant than the pure LGS. The ac conductivity values decrease with increase in Al-concentration, but increase with temperature and frequency. The result of Nyquist plot shows the presence of bulk resistive grain contributions and also confirms the increase of resistance with Al content in LGS. Our results may assist a way for the easy fabrication of Langasite based devices with improved resistivity properties by substituting a small amount of Al.

Synthesis and characterisation of a high dielectric constant and ac-conducting PANI/[Co(NH3)3(C4H4N2)3]Cl3 nanocomposite

In this study we have synthesised polyaniline/[Co(NH3)3(C4H4N2)3]Cl3 nanocomposite by in-situ chemical polymerisation method in non-aqueous dimethyl sulphoxide medium. The filler photoadduct was synthesised by irradiating aqueous solution mixture of hexaminecobalt(III) chloride metal complex and pyrazine, which was subsequently reduced in size by high energy ball milling prior to incorporation into the polyaniline matrix. The optical, structural, thermal and dielectric properties of the as synthesised nanocomposite were studied. The energy band gap as obtained from Tauc plot was observed higher for nanocomposite as compared to polyaniline. FTIR and XRD results show presence of photoadduct nanoparticles in the polyaniline matrix and successful interactions between them. The crystallite size as obtained from XRD confirms the nano dimensions of both photoadduct (26 nm) and nanocomposite (18 nm) with photoadduct retaining its structure in the nanocomposite. Presence of modified agglomerate regions in nanocomposite have been confirmed from FESEM which facilitates better charge separation in the material as observed from dielectric measurements. TG of nanocomposite shows better thermal stability as compared to both polyaniline and photoadduct owing to the strong interactions between the photoadduct nanoparticles and polyaniline matrix. The dielectric measurements (έ, ἒ, tanδ and σac) were studied as a function of frequency and their variation with frequency is explained by “Maxwell–Wagner” model. The nanocomposite shows higher value of dielectric constant (106) and higher value of ac-conductivity (109) as compared to pure PANI. The high value of dielectric constant and ac-conductivity of the nanocomposite makes the material suitable for energy storage applications and an effective electromagnetic interference shielding material both at low and high frequency.

Effect of reduced graphene oxide (rGO) on structural, optical, and dielectric properties of Mg(OH)2/rGO nanocomposites

In this paper, we report the synthesis of Mg(OH)2 NPs and Mg(OH)2–rGO nanocomposites (NCs) by microwave assisted co-precipitation method. The crystal phase, structural morphology and functional groups of the as-synthesized samples were analyzed by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR). Raman spectroscopy was used to study the defects in the samples. Raman spectroscopy and the SEM results validate the growth of Mg(OH)2 NPs on the rGO nanosheets. The chemical composition of the prepared samples was analyzed by EDAX. Optical properties of the as-synthesized samples were studied by UV–visible spectroscopy and the energy band gap was calculated by Tauc relation which shows a decrease in band gap with an increase in the amount of Graphene Oxide (GO) in the NCs. The dielectric properties were studied asa function of frequency over a range of 50Hz to 5MHz at room temperature. The value of dielectric constant decreases with an increase in frequency, this could be due to the existence of a polarization process at the border of the rGO sheets and Mg(OH)2 NPs. The value of dielectric loss shows a decreasing trend with an increase in frequency whereas the larger value of AC conductivity in Mg(OH)2–rGO NCs as compared to Mg(OH)2 NPs approves the restoration of sp2 network in the graphene sheets.

Influence of cerium substitution on structural, magnetic and dielectric properties of nanocrystalline Ni–Zn ferrites synthesized by combustion method

Nickel–Zinc (Ni–Zn) ferrites substituted by cerium (Ce) and having the chemical composition Ni0.5Zn0.5Ce x Fe2−x O4 (x = 0.00, 0.02, 0.04, 0.06, 0.08 and 0.10) were synthesized by combustion method using the organic fuel urea as reducing agent. The effects of cerium substitution on the structural, magnetic and dielectric properties of Ni–Zn compounds have been evaluated. X-ray diffraction patterns indicate that the Ni0.5Zn0.5Ce x Fe2−x O4 crystallizes into cubic spinel structure initially and secondary phase emerged along with main spinel phase when the Ce3+ content is increased. The elemental composition analysis confirms the stoichiometric presence of expected elements in the samples. Scanning electron microscope and high-resolution transmission electron microscope images reveal the nature of grain growth and the particle size of the synthesized samples. Fourier transform infrared spectroscopy confirms the formation of spinel phase and predicted the shifting of bands corresponding to Fe–O vibrations towards higher wavenumbers compared to undoped Ni–Zn ferrite. Magnetic characterization studies reveal that the substitution of Ce3+ into the Ni–Zn ferrite leads to a significant change in saturation magnetization and coercivity values. A plot of dielectric constant (ɛ′) versus applied electrical frequency measured at room temperature shows the normal dielectric behavior of the spinel ferrites. The introduction of Ce3+ rare earth ions into Ni–Zn ferrites samples is found to affect the values of both dielectric constant and AC conductivity.

Fabrication of a novel PANI/[Co(NH3)4(C3H4N2)2]Cl3 nanocomposite with enhanced dielectric constant and ac-conductivity

A new polyaniline/[Co(NH3)4(C3H4N2)2]Cl3 nanocomposite was synthesised by in-situ oxidative polymerisation of aniline monomer in non-aqueous DMSO medium. The nanocomposite was investigated as a suitable material for energy storage and high frequency device applications due to its high value of dielectric constant (≈104) and ac-conductivity (≈108) with a rapid decrease in loss tangent in the high frequency region. The nanocomposite was characterised by techniques like UV–Vis spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction analysis and field emission scanning electron microscopy (FESEM). The results revealed presence of photoadduct (PA) in PANI@PA nanocomposite with significant interaction between PANI matrix and PA nanoparticles. The PANI@PA nanocomposite exhibit enhanced thermal stability broadening its scope of usability. The better dispersion of PA nanoparticles in the PANI matrix as observed in FESEM, facilitates better charge transport. Dielectric study showed capacitive effect of the nanocomposite at low frequency and a conductivity effect at high frequency. The high value of dielectric constant and ac-conductivity of PANI@PA nanocomposite is attributed to the heterogeneous structure of nanocomposite with enhanced interface, which has a positive effect on the dielectric properties of the material.

Effect of Sr-doping on sinterability, morphology, structure, photocatalytic activity and AC conductivity of ZnO ceramics

The change in morphology, structure, catalytic activity and ac electrical conductivity of the Sr-doped ZnO (Zn1−xSrxO, x = 0, 0.01, 0.02 and 0.03) ceramic powders was investigated after sintering. The sintering of the Sr-doped samples results in faster growth in particle-size and the shape becomes spherical by dissolution of the sharp edges in order to reduce the strain produced by Sr-doping and to reduce the surface energy. The growth in particle-size reduces the photocatalytic activity. Sr-doping reduces the band gap of ZnO by a small value (~0.1 eV). The ac conductivity values decrease with increase in Sr-concentration, but increase with temperature and frequency. This behavior is due to the conduction by small polarons created by Sr-doping. Our results may facilitate a way for the easy fabrication of monolithic ZnO based devices with improved dielectric and semiconducting properties of ZnO ceramics by doping a small amount of Sr.

Synthesis and characterization of silver tungstate/iron phthalocyanine nanocomposite for electronic applications

Silver tungstate/iron phthalocyanine nanocomposite (Ag2WO4/FePc) was prepared by simple solvent evaporation method. Thermodynamic stability of the synthesized nanocomposite was studied by thermogravimetric analysis. The nanocomposite was structurally characterized by X-ray diffraction, Fourier transform infrared spectroscopy and Raman spectroscopy. The results confirm the formation of Ag2WO4/FePc nanocomposite. The size and morphology of the prepared nanocomposite were analyzed by scanning electron microscopy and high-resolution transmission electron microscopy. The optical properties were analyzed by ultraviolet-visible and photoluminescence spectroscopic techniques. UV-visible absorption studies indicate that Ag2WO4/FePc nanocomposite has extended visible absorption in the wavelength range 662 to 782 nm. The nanocomposite shows high emission intensity and greenish-blue emission when excited with near-ultraviolet light. The resistivity of the sample was measured at different temperatures. The dielectric constant, dielectric loss and AC conductivity values were measured in the frequency range 100 Hz–20 MHz. The results obtained from thermal, structural, optical and electrical characterization suggests that the synthesized Ag2WO4/FePc nanocomposite can be used as a potential material for varied optoelectronic and solid state applications. The present study constitutes the first report for the synthesis and characterization of Ag2WO4/FePc nanocomposite.

Structural, AC conductivity, impedance and dielectric study of nanocrystalline MFe2O4 (M = Mg, Co or Cu) spinel ferrites

Nanocrystalline MFe2O4 (M = Mg, Co or Cu) spinel ferrites were prepared using novel combustion method and its structural, AC conductivity, impedance and dielectric properties were investigated. The powder X-ray diffraction analysis shows that the size and lattice constant of nanocrystalline MgFe2O4, CoFe2O4 and CuFe2O4 are 10.4, 28.6 and 9.6 nm (8.330, 8.369, and 8.342 A), respectively. Further the Raman spectra confirm the spinel phase formation and five active Raman modes such as 1A1g, 1Eg, 3T2g are assigned for each ferrite. The Fourier transform infrared spectra confirms the formation of tetrahedral and octahedral sites. The electrical properties such as AC conductivity, impedance, dielectric constant and tan δ are reported. The value of AC conductivity at 30 °C (at 1 Hz) is 1.12 × 10−8, 1.91 × 10−10 and 9.19 × 10−8 S/cm, respectively for MgFe2O4, CoFe2O4 and CuFe2O4 ferrites. The activation energy of AC conductivity process, calculated using Arrhenius relation is ranged from 0.45 to 0.56 eV. The impedance analysis shows that the contribution of grain boundary is more than that of grain for the electrical behavior of the prepared samples. The dielectric study shows that the CoFe2O4 has the lowest value of dielectric constant and tanδ among the three investigated samples.

Electrical properties of Ba 0.9 Ca 0.1 Zr 0.1 Ti 0.9 O 3 ceramics induced by SFN heterogeneous seed

Abstract The effect of heterogeneous seed crystal on the electrical properties of Ba 0.9 Ca 0.1 Zr 0.1 Ti 0.9 O 3 (BCZT) ceramics was investigated. The SrFe 0.5 Nb 0.5 O 3 (SFN) crystal was used as the heterogeneous seed. The seed was prepared by molten salt method. All ceramic samples showed pure perovskite phase (BCZT: x mol% SFN, x = 0–0.5). The samples at x = 0.0–2.0 showed coexistence between rhombohedral and tetragonal phase, both of which transformed to tetragonal phase at x ≥ 3.0. Density values were in the range of 5.59–5.74 g/cm 3 . The value of dielectric constant (e r ) at room temperature of SFN seed-added samples was higher than that of the non-seed sample. The highest value of e r ∼ 10290 was found in SFN seed at 3.0 mol%. The tan δ values tended to decrease when SFN seed content increased and were lower than 0.02 for all samples (1 kHz at room temperature). The lowest value of Ac conductivity (σ ac ) was obtained at the highest SFN seed content. P-E hysteresis loop changed to greatly slim loop with higher SFN seed content. Furthermore, remnant polarization (P r ) and coercive field (E c ) decreased with increasing SFN seed content. In addition, piezoelectric coefficient (d 33 ) and electromechanical coupling coefficient (k t ) presented no significant change with the smaller SFN seed content ranging from x = 0.0 to x = 2.0.