Materials Literature
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Pb0.95Sr0.05[(Mn1/3Sb2/3)0.06(Ni1/2W1/2)x(Zr0.49Ti0.51)1-x-0.06]O3 (PMS-PNW-PZT) (x = 0.01∼0.04) were prepared by using traditional technique with solid reaction process. The effects of PNW contents and sintering temperatures on microstructure, dielectric and piezoelectric properties of PMS-PNW-PZT ceramics were inves…
Bismuth titanate Bi4-xNdxTi3O12 (x = 0, 0.25, 0.45, 0.65, 0.85) samples were prepared using the solid-state reaction route and their dielectric properties were investigated. Crystal structure was analyzed by X-ray diffraction instrument, which indicated that Bi4-xNdxTi3O12 ceramics were pure phases and no other phases…
Bi1+xFeO3 (BFO, x = 0,0.05,0.1,0.15) thin films are fabricated on LaNiO3 (LNO) buffered Si substrates by using a polymeric precursor solution under appropriate crystallization condition. All films possess highly (100) preference oriented. SEM analyses show that the average grain size decreases and thin films become de…
In this report phase pure nanosize BaTiO3 powder are prepared by molten salt method in the temperature range of 175–700°C, which is much lower than that of the conventional preparation method. Two molten salt systems, namely NaCl-KCl and NaOH-KOH have been exploited to prepare BaTiO3 powder. Effect of two salt systems…
Orientation dependence of the strain in epitaxial (Ba0.3Sr0.7)TiO3 films and the dielectric properties have been investigated using in-plane compressive substrates. (100)- and (111)-epitaxial films were grown on (100)- and (111)-cSrRuO3/SrTiO3 substrates by rf magnetron sputtering. The residual strain was found to be…
Crystal structures of triglycine sulfate single crystals under DC and AC electric fields have been analyzed in the ferroelectric phase by X-ray diffraction. Ratio between positive domains and negative domains in the sample can be confirmed by Flack's parameter considered the X-ray anomalous dispersion effect. Atomic p…
Transparent SrO–0.5Li 2 O–4.5B 2 O 3 (SLBO) and BaO–0.5Na 2 O–4.5B 2 O 3 (BNBO) glasses were fabricated via the conventional melt‐quenching technique. The amorphous and glassy characteristics of the as‐quenched samples were respectively confirmed by X‐ray powder diffraction and differential thermal analysis studies. O…
Dielectric measurements of flux grown AgNbO3 single crystals in the [100]c, [110]c and [111]c directions were carried out. In the whole entire of M phases dielectric anisotropy is observed. Dielectric permittivitty for [100]c is much lower than for [110]c and [111]c directions. In the vicinity of the M1-M2 phase trans…
Polyimides and poly(siloxane imide)s containing photo-active cyclobutane diimide units were developed as reversible adhesives for temporary bonding in micro-fabrication processes. Poly(amic acid) formation in dipolar aprotic solvents and subsequent chemical or thermal solution imidization yielded the corresponding org…
The internal textures of crystals of moderately radiation-damaged monazite-(Ce) from Moss, Norway, indicate heavy, secondary chemical alteration. In fact, the cm-sized specimens are no longer mono-mineral monazite but rather a composite consisting of monazite-(Ce) and apatite pervaded by several generations of fractur…
The influence of N ‐(l‐morpholinobenzyl)urea (MBU) on corrosion inhibition of mild steel in 1 M HCl was studied by weight loss, effect of temperature, potentiodynamic polarization and electrochemical impedance spectroscopy. The experimental results showed that the inhibition efficiency increases with increasing of MBU…
Non-adiabatic effects can considerably modify the phonon dispersion of low-dimensional metallic systems. Here, these effects are studied for the case of metallic single-walled carbon nanotubes using a perturbative approach within a density-functional-based non-orthogonal tight-binding model. The adiabatic phonon dispe…
The zero- and low-temperature behaviors of a quasi-one-dimensional organic polymer proposed as a symmetrical periodic Anderson-like chain model, in which the localized f orbitals hybridize with the conduction orbitals at even sites, are investigated by means of many-body Green's function theory. In the absence of magn…
The Scalar Relativistic-Zero Order Regular Approximation-Time Dependent Density Functional Theory has been employed to study the sulfur L-edge XANES spectrum of the [Au(25)(SCH(3))(18)](+) model cluster, with the aim to reproduce and rationalize previous experimental data. The salient experimental features are properl…
Abstract Yb 2 Zr 2 O 7 ceramic powders synthesized by chemical‐coprecipitation and calcination method were pressureless‐sintered at 1700 °C for 10 h in air to fabricate dense bulk materials. Hot corrosion studies were performed on Yb 2 Zr 2 O 7 against Na 2 SO 4 and Na 2 SO 4 + V 2 O 5 (molar ratio = 1:1) molten salts…
Lead-free piezoelectric Bi0.5(Na0.78K0.22)0.5TiO3–(Na0.5K0.5)NbO3 ceramics have been synthesized by a conventional solid-state reaction methods at different sintering temperatures (1100–1200°C). The effect of sintering temperature on the crystal structure, density and electrical properties was investigated. The Bi0.5(…
Lanthanum (La) doped BaTiO3-(Bi0.5Na0.5)TiO3 (BT-BNT) positive temperature coefficient of resistivity (PTCR) ceramics were prepared by a conventional solid state reaction method. The microstructure and PTCR effect of BT-BNT ceramics were investigated by scanning electron microscopy and measurement of resistivity-tempe…
The effect of lead magnesium niobate titanate (PMNT) particle size on the dielectric and ferroelectric properties of PMNT- Portland cement (PC) composites was investigated. PMNT of various particle sizes (75–425μm) were used at 50% by volume to produce the composites using the mixing and pressing method. Dielectric pr…
This paper uses structured diffuse scattering to compare and contrast the local crystal structure behaviour of the normal ferroelectric BaTiO3 with a range of relaxor ferroelectric substituted BaTiO3 materials. The results strongly suggest that both normal ferroelectric BaTiO3 and the relaxor ferroelectric substituted…
Silver halides have unique features in solid state physics because their properties are considered to be of borderline nature between ionic and covalent bonding. In AgCl, the self-trapped hole (STH) is centered and partly trapped in the cationic sublattice, forming an Ag(2+) ion inside of a (AgCl(6))(4-) complex as a…