Lithium Lanthanum Titanates: A Review
Abstract For Abstract see ChemInform Abstract in Full Text.
Materials Literature
文献浏览
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Photoemission investigation of the electronic structure of lanthanum–calcium oxoborate
Lanthanum calcium oxoborate is a nonlinear optical material that belongs to the calcium-rare-earth (R) oxoborate family, with general composition of Ca4RO(BO3)3 (R3+=La,Sm,Gd,Lu,Y). X-ray photoemission was used to study the valence band electronic structure and surface chemistry of this material. High resolution photo…
High performance field-effect transistors made of a multiwall CNx/C nanotube intramolecular junction
Field-effect transistors (FETs) based on an individual CNx/C nanotube (NT) were fabricated by focus ion-beam technology. The nanotube transistors exhibited n-type semiconductor characteristics, and the conductance of nanotube FETs can be modulated more than four orders of magnitude at room temperature. The electron mo…
Thermoelectric properties of LaNi1−xCoxO3 solid solution
We present the results of a systematic investigation of the thermal conductivity, Seebeck coefficient and electrical resistivity for selected members (x=0.3, 0.7, 0.8, and 1) of the LaNi1−xCoxO3 solid solution in the temperature range of 80⩽T⩽320 K. Substitution of Ni by Co drives the system from n-type metallic phase…
Fast relaxation in the structural glass and glassy crystal of ethanol and cyano cyclohexane: A quasielastic light scattering study
Fast relaxation processes in the structural glass and glassy crystal of ethanol as well as in the glassy crystal of cyano cyclohexane were studied by quasielastic light scattering (LS). Depolarized and polarized LS spectra together with the Brillouin line were measured applying a tandem Fabry–Perot interferometer at f…
UV grafting of methacrylic acid and acrylic acid on high‐density polyethylene in different solvents and the wettability of grafted high‐density polyethylene. II. Wettability
Abstract The wettability of high‐density polyethylene grafted with methacrylic acid is strongly influenced by the nature of the grafting solvent. Here, the wettability is expressed by the water contact angle and absorbency. The initial (10‐s) contact angle of polyethylene (PE) grafted in acetone/water solution decreas…
Epitaxial growth of SrTiO3 films on CeO2/yttria-stabilized zirconia/Si(001) with TiO2 atomic layer by pulsed-laser deposition
Epitaxial SrTiO3 (STO) films were fabricated on CeO2/yttria-stabilized zirconia(YSZ)/Si(001) substrates by the insertion of a TiO2 atomic layer by pulsed-laser deposition. X-ray diffraction and reflection high-energy electron diffraction showed that epitaxial STO films with different out-of-plane orientations have bee…
Formation of single-phase oxide nanoclusters: Cu2O on SrTiO3(100)
Selective formation of the single-phase nanoclusters of Cu2O on SrTiO3(100) substrates in the size range of 10–50 nm is found to occur only in a very narrow oxygen plasma-assisted molecular-beam epitaxy growth parameter window, in comparison with the bulk phase diagram (for oxygen pressure versus temperature). There a…
Electrical properties of a highly oriented, textured thin film of the ionic conductor Gd:CeO2−δ on (001) MgO
Highly oriented ionic conductor gadolinium-doped CeO2−δ (Ce0.8Gd0.2O2−δ) thin films have been grown on single-crystal (001) MgO substrates by pulsed-laser ablation. The films are highly c-axis oriented with cube-on-cube epitaxy, as shown by x-ray diffraction and electron microscopy. The interface relationship is, surp…
Multicritical points in the mixed ferromagnetic-ferrimagnetic ternary alloy with a single-ion anisotropy
The phase diagram of the ${\mathrm{AB}}_{p}{C}_{1\ensuremath{-}p}$ ternary alloy consisting of Ising spins ${S}^{A}=\frac{3}{2},$ ${S}^{B}=1,$ and ${S}^{C}=\frac{5}{2}$ in the presence of a single-ion anisotropy is investigated by the use of a mean-field theory based on the Bogoliubov inequality for the Gibbs free ene…
Polarized Raman-scattering study of Ge and Sn-filled CoSb3
Raman-scattering spectra of Ge-filled and Sn-filled CoSb3 were studied as a function of polarization. Polarized Raman-scattering spectra of CoSb3 were used to help distinguish the symmetry of each vibrational mode observed in the filled skutterudite specimens. Seven out of the eight Raman-active Sb vibrational modes o…
Spectroscopic impedance study of nanocrystalline diamond films
Nanocrystalline diamond films were synthesized by microwave plasma-enhanced chemical vapor deposition using Ar/H2/CH4 gas mixtures. A Fluke PM6306 RCL meter was used to study the electrical impedance of these diamond films in the frequency range 50 Hz to 1 MHz. The impedance dispersion measurement yields the real and…
Intrinsic electronic transport properties of organic field-effect transitors based on single crystalline tetramethyltetraselenafulvalene
We report the fabrication of field-effect transistors on single crystals of the highly anisotropic organic semiconductor tetramethyltetraselenafulvalene. We find maximum mobilities of 0.2 cm2/V s at room temperature. We observe an exponential decrease of mobility with decreasing temperature with an activation energy 1…
Synthesis of transparent thermoplastic polyurethane elastomers
Abstract Thermoplastic polyurethanes were synthesized from poly(propylene glycol)‐ block ‐poly(ethylene glycol) polyols and hybrid hard segments that combined at least two different chain extenders. The combination of hard segments allowed for modification of elastomer performance and processing not achievable by any…
High-quality heterojunction between p-type diamond single-crystal film and n-type cubic boron nitride bulk single crystal
We presented the results on the fabrication and characterization of high-quality heterojunction between p-type diamond single-crystalline film and n-type cubic boron nitride (c-BN) bulk single crystal. By employing a simple surface diffusion, we prepared the n-type c-BN bulk single crystals with relatively low resisti…
Magnetotransport study of temperature dependent magnetic anisotropy in a (Ga,Mn)As epilayer
The anisotropic magnetotransport properties of a (Ga,Mn)As epilayer and the magnetization switching are studied as a function of temperature. The magnetization switching field shows asymmetry for crystallographically equivalent [110] and [1̄10] directions at 4 K, and the asymmetry is more significant at 40 K. The magn…
Dielectric properties of BaTiO3/SrTiO3 superlattices measured with interdigital electrodes and electromagnetic field analysis
Artificial BaTiO3(BTO)/SrTiO3(STO) superlattices on STO substrates were fabricated by the molecular beam epitaxy process. The capacitance and the complex admittance of superlattices with interdigital electrode structures were measured at 1–110 MHz. The dielectric properties of the superlattices were evaluated by the e…
Quasi-periodic nanostructures grown by oblique angle deposition
We report that tungsten nanocolumns grown by oblique angle sputter deposition develop a quasi-periodic morphology which is not observed for continuous films deposited at normal incidence. The maximum position in power spectral density of the quasi-periodic nanostructures decreases exponentially as a function of thickn…
Electrical-field control of metal–insulator transition at room temperature in Pb(Zr0.2Ti0.8)O3/La1−xBaxMnO3 field-effect transistor
We have constructed field-effect transistor structures that consist of a ferromagnetic (La,Ba)MnO3 channel and a ferroelectric PbZr0.2Ti0.8O3 gate insulator with the aim of controlling the metal–insulator transition at room temperature by applying an electric field. Investigations have revealed that the transition tem…
Structural changes on supercooling liquid silicon
X-ray diffraction experiments and ab initio molecular dynamics (AIMD) simulations have been performed to investigate the atomic structure of liquid silicon into the deeply supercooled region. The levitation technique used has made it possible to extend the measurements down to a temperature of 1458 K, 230 K below the…