We have found that laminate composites consisting of longitudinally magnetized magnetostrictive Terfenol-D and poled piezoelectric Pb(Zr,Ti)O3 layers dramatically enhanced magnetoelectric effects when driven near resonance. The maximum induced voltage at resonance was ∼10 Vp/Oe, which is ∼102 times higher than previous reports subresonant frequencies.

It has been found that aliovalent-substituted $\mathrm{Bi}\mathrm{Fe}{\mathrm{O}}_{3}\text{\ensuremath{-}}\mathrm{Pb}\mathrm{Ti}{\mathrm{O}}_{3}$-based polycrystalline materials have significantly enhanced multiferroic properties. Relative to unmodified $\mathrm{Bi}\mathrm{Fe}{\mathrm{O}}_{3}$, our results for modified ceramics reveal: (i) a dramatic increase in the electric-field-induced polarization; and (ii) establishment of remanent magnetization. The evidence destruction space-modulated...

The dielectric and structural properties of Bi(GaxFe1−x)O3–PbTiO3 (BGF–PT) crystalline solutions have been investigated. Studies focused on phase-pure perovskite materials. With increasing Ga content, we found: (i) a coexistence tetragonal rhombohedral ferroelectric phases; (ii) multicell structure for BGF–0.3PT; (iii) maximum c/a ratio the composition BGF–0.6PT with x=0.25. Also, modification increases electrical resistivity to ⩾1012 Ω cm, reduces loss or tan δ over wide temperature range,...

Solid solutions of 0.45(Bi1−xLax)FeO3–0.55PbTiO3 (BLFPTx) for x=0.1, 0.2, and 0.3 were prepared by the mixed oxide method. BLFPTx showed tetragonal perovskite structure which c∕a ratio Curie temperature decreased with increase La content. Significant dielectric magnetic enhancements observed doping. The ferroelectric ferromagnetic hysteresis loops revealed maximum remanent polarization magnetization 28μC∕cm2 0.14emu∕g, respectively, x=0.3. Results indicated that was insulating switchable...

Crystalline solutions of (1−x)(Bi,La)(Fe0.95Ga0.05)O3–xPbTiO3 (BLGF–PT) have been fabricated with La concentrations 0, 10, and 20 at. %. The BLGF–PT system has found to excellent insulation resistivity ⩽1013 Ω cm. In addition, substituent was decrease the coercive field, resulting in much improved dielectric piezoelectric properties. A shift morphotropic phase boundary increasing content identified for x=0.3, 0.4, 0.43. We achieved optimized constant, loss factor, Curie temperature, remnant...

(1 – x )(Bi 0.8 La 0.2 )(Ga 0.05 Fe 0.95 )O 3 · PbTiO (BLGF‐PT) crystalline solutions have been fabricated by solid‐state reactions. BLGF‐PT has single perovskite phase structure with a rhombohedral–tetragonal (FE r ‐FE t ) morphotropic boundary (MPB) at PT content of = 0.43. Lanthanum substitution found to increase the insulation resistance and decrease coercive field down 20 kV/cm, which results in significant improvements dielectric piezoelectric properties BLGF‐PT. The constant, loss...

Ba 0.6 Sr 0.4 Ti O 3 (BST) thin films were prepared on MgO buffered Pt(111)∕Ti∕SiO2∕Si substrates by pulsed laser deposition. The crystallographic structure, interface characteristics, and dielectric properties of BST are strongly dependent thickness. exhibit (111) preferred orientation when layer is thicker than 5nm. can mitigate the interdiffusion between Pt, causing loss leakage current to decrease significantly. loss, tunability, largest figure merit 10nm achieve 0.009, 30%, 33.4, respectively.

Crystalline solutions of 0.57(Bi1−xLax)FeO3−0.43PbTiO3 (BLF-PT) for x=0, 0.1, 0.2, and 0.3 have been fabricated by the solid state reaction method. The dielectric constant BLF-PT was significantly enhanced using La substitutions, reaching about 1850 x=0.3. ferroelectric-paraelectric phase transition becomes more diffused with a decreased temperature higher concentration. x=0.2 exhibits multiferroic characteristics simultaneously remnant magnetization polarization 0.119 emu/g 33.5 μC/cm2,...

The gallium-modified bismuth ferrite-lead titanate compositions of 0.4Bi(Ga0.4Fe0.6)O3-0.6PbTiO3 (0.4BGF-0.6PT), has been investigated for the potential as a high-field and high-temperature piezoelectric ceramic. crystalline solutions 0.4BGF-0.6PT were fabricated by using solid-state reaction method. X-ray diffraction analysis revealed that tetragonal perovskite structure. Curie temperature Tc was determined to be 540 °C. Our ceramic specimens could withstand electric field >250kV∕cm,...

The authors have prepared heterostructured ZnO∕BiFeO3-PbTiO3 (BFO-PT) composite film and BFO-PT on Pt∕Ti∕SiO2∕Si substrates by pulsed-laser deposition. structure morphologies of the films were characterized x-ray diffraction (XRD) scanning electron microscope. XRD results show that both are perovskite structured last with different orientations. leakage current density in ZnO∕BFO-PT was found to be nearly two orders magnitude lower. This could due introduced ZnO layer behaving as a Schottky...

Abstract Oriented growth of Bi2Fe4O9 crystals were synthesized by a facile hydrothermal route in the presence different organic additives. X-ray diffraction was used to characterize derived powders, indicating that single-phase with orientation along (001) and (221) planes obtained respectively. Extensive structural characterization as-prepared samples observed using Fourier transform infrared spectroscopy, Scanning electron microscope, UV-vis diffuse reflectance spectrum. The photocatalytic...