In the present study, we adopted, a green approach for the synthesis of ZnFe2O4 nanoparticles using the aqueous flower extract of Nyctanthes arbor-tristis. This extract served as the reducing agent for the synthesis of ZnFe2O4. The obtained nanoparticles were characterized by X-ray diffraction studies which indicated the formation of single phase ZnFe2O4. The size of the nanoparticles was in the range

Targeted drug delivery has become an increasingly popular field of research over the past decade as the desire for more discriminatory methods of treatment has risen. Photoacoustic-mediated drug delivery utilizing core-shell magnetoelectric nanocomposites has the potential to provide localized administration of medicine or even induce apoptosis via irreversible cellular electroporation. To design these

Ba0.985Bi0.01Mn0.067Ti0.933O3 (BBMT) ceramic samples were prepared using solid phase and precipitation methods. The influence of preparation method on phase composition, microstructure, and dielectric properties of BBMT ceramic samples was studied. Results show that grain size of ceramic sample prepared by solid-phase method (BBMT-1) was not uniform and was larger than 1 µm. The dielectric peak at

Ba1-xCaxTiO3 (Ca added BaTiO3; x = 0–0.3) ceramics is used as a target catalyst to probe the influence of ferro-electricity on the de-colorization of a typical dye molecule Methyl orange under visible light irradiation. The results indicated that there is a two fold increase in the de-colorization rate using Ba0.7Ca0.3TiO3 in around 180 min. This is ascribed to the ferro-electricity of the tetragonal

Influence of lanthanides (Ln = La, Nd, and Y) in [Ba0.95Ln0.05] [Zr0.25 Ti0.75]O3 ceramics, synthesized by high-temperature solid-state reaction technique. Investigation on the phase structure, ferroelectric, piezoelectric and energy storage performance of BZT-Ln ceramics was done. X-ray diffraction studies revealed that the specimen belongs to cubic phases with the space group of Pm3m. Maximum ferroelectric

The dense ceramics (Na0.47Bi0.47Ba0.06)0.97Sr0.03TiO3 were sintered in nitrogen atmosphere. The weight loss during sintering is 0.2%. The mean size of grains is about 1.5 μm. The dielectric permittivity and dielectric loss of the ceramics at room temperature and 1 kHz are 1836 and 0.05, respectively. The dielectric spectra of the unpoled and poled ceramics were measured. The diffuse dielectric behavior

Lead-free BiFeO3 ceramics doped with varying amounts of Bi2O3–B2O3–ZnO (BBZ) glass, that is, x wt% (x = 0.0, 0.5, 1.0, 1.5, and 2.0) were prepared via the traditional solid-state reaction route. The effects of BBZ glass content on the phase composition, microstructure, dielectric, and ferroelectric properties of BiFeO3 ceramics were investigated. X-ray diffraction results confirmed that BBZ glass doping

The La2/3Cu3Ti4O12 (LCTO) ceramic samples with a higher permittivity were prepared by the sol-gel technique. The study indicated that the effects of dc bias on grain boundaries electrical properties were very evident, but the grain electrical properties were independent of dc bias. The dielectric constant decreased whereas the dielectric loss increased with increasing of dc bias, and the resistances

Ba4SmFe0.5Nb9.5O30 ceramics were prepared by solid-state reaction method and the sample crystallized into single phase tungsten bronze (TB) structure with space group P4bm. The absence of dielectric peak suggests that there is no long-range ferroelectric order exists above room temperature (RT). Therefore, the observed ferroelectric property should be related to the polar nanoregions that survived

3D printing is among the most exciting and rapidly advancing fields of research in materials engineering and device fabrication. The capability of developing a bottom-up approach to device fabrication, which eliminates wasted material and the need for complex environmental conditions, is of incredible interest to researchers. The most critical factor in the success of this technology is the development

The complex permittivity of a multiphase aqueous solution is measured in the microwave frequency range of 2.8–6GHz using the cavity perturbation method for a temperature domain of −15 °C up to 0 °C in order to determine the volume fraction of ice in the mixture. The multiphase aqueous substance contains liquid and solid water (H2OL + H2OS), carbon dioxide gas (CO2) and high-fructose corn syrup. The

Potassium tantalum niobate (KTa1-yNbyO3, KTN)-barium titanate (BaTiO3, BT) solid solution system 0.02[KTN]-0.98[BT] ceramics with various microstructures were prepared by modified two-step sintering method, and their dielectric and piezoelectric properties were observed. For 0.02K(Ta0.5Nb0.5)O3-0.98BaTiO3 ceramics ferroelectric tetragonal crystalline structure was found for sintering temperature1230

This research is focused on piezoelectric energy harvesting at high pressure fields and low frequency applications. Lead Zirconate Titanate (PZT) is the primary piezoelectric evaluated with a focus on different PZT types (soft and hard). Study of piezoelectric energy harvesting has been done earlier in cantilever designs however this study concentrates on the d33 mode. Several PZT samples and geometries

Experiments to determine the effects of mechanical fastener induced pre-stress on a piezoelectric energy harvester (PEH) were conducted. Using a mechanical pre-stress fixture and an electro-dynamic MTS material tester, experiments conducted on soft-PZT showed that are optimized PEH by modulating the magnitude of pre-stress induced on the soft-PZT. Experiments also showed that by adjusting the number

In this study, three-phase piezocomposites are fabricated on the basis of the 1–3 composite structure and the cutting–filling method. The 1–3 piezocomposites are used with PZT-5A as the piezoelectrics and epoxy/silicone rubber as the matrix. The relationships between the performance parameters of the 1–3 composites and different ceramic volume fractions are analyzed via finite element simulation and

Cadmium substituted Nickel Ferrite, Ni0.5CoxCd(0.5-x)Fe2O4 (x = 0.0, 0. 02) were synthesized by sol-gel auto-combustion technique with microwaves using urea as fuel. The samples were sintered at two different temperatures 600 °C and 800 °C. This paper discusses the effect of sintering temperature on varius structural, morpological, magnetic and optical properties of the syntesized samples. The structural

Nanotubes of nickel ferrite were prepared by citrate method and were used in nanocomposite synthesis via in situ polymerization technique. The structural and surface morphology characterization was carried out by FTIR, XRD, and SEM techniques. FTIR spectra show the characteristic peaks of benzenoid ring, quinoid ring, and nickel ferrite stretching of tetrahedral and octahedral sites. XRD pattern shows

The present work concentrate on frequency analysis of beams laminated with light activated shape memory polymer (LASMP), whose Young’s modulus can be adjusted by light exposure. Based on this noncontact mechanism, stiffness of beams with LASMP can be manipulated so as to realize frequency control. Natural frequency of LASMP patch laminated beams with different boundary conditions is computed by present

A new method for rapid prototyping of microfluidic device on a piezoelectric substrate is presented. A clear plastic film is used to cut for channel patterns mold, which is pasted on a glass. Poly(dimethylsiloxane) (PDMS) is filled on the glass and solidified in an oven. After having been peeled off the plastic mold, the PMDS is bonded with a piezoelectric substrate with an interdigital transducer

(2020). Correction. Ferroelectrics: Vol. 555, No. 1, pp. 238-238.

(2020). Correction. Ferroelectrics: Vol. 555, No. 1, pp. 239-239.

(2020). Correction. Ferroelectrics: Vol. 555, No. 1, pp. 240-240.

The dielectric, piezoelectric, and acoustic properties of PMN-0.32PT (Pb(Mg(1/3)Nb(2/3)) O(3)-PbTiO(3)) single crystals were investigated as a function of sample thickness ranging from 120 to 30 μm in order to enlighten the origin of property degradation of crystals for high frequency ultrasound applications. Electromechanical coupling factor(k(t) ), clamped and free dielectric constants decreased

Development of PMN-PT single crystal/epoxy 1-3 composites for high-frequency ultrasonic transducers application is presented. The composite was fabricated by using a DRIE dry etching process with a 45% volume fraction of PMN-PT. A 35 MHz ultrasound flat transducer was fabricated with the composite, which was found to have an effective electromechanical coupling coefficient of 0.81, an insertion loss