We report a process for the fabrication of an anatase TiO(2) mesosponge (TMS) layer by optimized Ti anodization in hot glycerol electrolyte followed suitable etching process. Such layers can easily be grown to >10 microm thickness and have regular channels structural features 5-20 nm range. The show high photocatalytic activity are mechanically very robust. therefore open new pathways wide field TiO(2)(anatase) applications.

A nanofabrication technique combining pulsed laser deposition and a nanoporous anodic aluminum oxide membrane mask is being proposed to prepare various types of multiferroic nanocomposites, viz. periodically ordered CoFe2O4 dots covered by continuous Pb(Zr,Ti)O3 layer, with CoFe2O4, Pb(Zr,Ti)O3/CoFe2O4 bilayer heterostructure dots. By properly tuning the processing parameters, epitaxial nanodot-matrix composites can be obtained. For composite consisting nanostructures film, an unexpected...

The superior photo-catalytic activity of mesoporous Na doped TiO₂ attributed to the combined effect electron–hole recombination rate, increased surface area and enhanced crystallinity.

Etch a sketch: Robust TiO2 mesoporous layers can be fabricated on Ti surfaces by combination of non-thickness-limited anodization and selective etching. Layers more than 50 μm thick with highly regular feature pore sizes in the range 5–10 nm produced (see picture, FTO=fluorine doped tin oxide). The are flexible, well-adhered, used directly after appropriate annealing efficient dye-sensitized solar cells. Detailed facts importance to specialist readers published as "Supporting Information"....

Abstract A novel nanopatterning method using pulsed laser deposition through an ultrathin anodic aluminium oxide (AAO) membrane mask is proposed to synthesize well‐ordered nanodot arrays of magnetic CoFe 2 O 4 that feature a wide range applications like sensors, drug delivery, and data storage. This technique allows the adjustment array dimension from ∼35 ∼300 nm in diameter ∼65 ∼500 inter‐dot distance. The dot density can be as high 0.21 Terabit in. −2 . microstructure nanodots...

We report on the effects of neutron irradiation in superconducting ${\mathrm{MgB}}_{2}$ single crystals. Transmission electron microscopy investigations reveal large radiation-induced defects with dimensions comparable to coherence length. Accordingly, measurements magnetic moment show pronounced modifications reversible and irreversible properties after irradiation. In particular, we concentrate emergence a second peak (fishtail), situated near ${H}_{c2}$ at low fluences, but extending over...

The magnetic anisotropy of epitaxial spinel ferrite CoFe2O4 films grown on SrTiO3 substrates by pulsed laser deposition can be reoriented inserting a thin SrRuO3 buffer layer. Without SrRuO3, the show uniaxial with easy axis perpendicular to film plane, while layer results in switching into in-plane orientation. This is associated tensile and compressive strain for without layer, respectively, which also correlated different density interfacial misfit dislocations. As result, effectively...

Shift current is the dominant dc-current response in bulk photovoltaic effect (BPVE), which conversion of solar energy into electricity materials with broken inversion symmetry. While guiding principle BPVE a lack symmetry material also results ferroelectricity, it therefore, expected that significantly large shift achieved ferroelectric materials. In this work, we calculate using first principles two-dimensional...

The influence of the quality boron precursor powder on microstructure and superconducting properties MgB2 bulk samples tapes was investigated. nominal purity specified by suppliers considers only metallic impurities is not sufficient for characterization powder. Oxygen grain size B were found to affect Tc tapes. investigated SEM TEM. Grains in powders either nanocrystalline or crystalline, with sizes varying between 110 500 nm. prepared mechanical alloying, which resulted a small, 20–60 nm,...

In this work we investigated fundamental properties of CuInS2 quantum dots in dependence the particle size distribution (PSD). Size-selective precipitation (SSP) with acetone as poor solvent was performed an adequate post-processing step. Our results provide deep insight into correlation between and various optical characteristics bandgap energy, absorption emission features broadness signal. These structure–property relationships are only achieved due to unique combination different...

Two-dimensional (2D) materials with intrinsic piezo- and ferro-electricity are highly prospective in designing novel catalysts for green hydrogen generation. This work systematically investigates the photocatalytic piezocatalytic capabilities of buckled hexagonal (h-) NbP NbN ferroelectric monolayers utilizing hybrid density functional theory (DFT) calculations. First, we delve into monolayers' structural, electronic, ferroelectric, optical properties. reveals that can drive evolution...

Ferroelectric PbZrxTi1−xO3 and ferromagnetic La0.7Sr0.3MnO3 films were grown on SrTiO3(100) substrates in order to fabricate multiferroic epitaxial heterostructures. Multilayers of PbZr0.2Ti0.8O3∕La0.7Sr0.3MnO3 with 5nm thin individual layers preserve good magnetic properties have a transition temperature ∼320K. The variation the coercive field films, sandwiched between increasing Zr content same heterostructure, demonstrates influence interfacial biaxial strain.

The mesoporous La-Na co-doped TiO2 nanoparticles (NPs) have been synthesized by non-aqueous, solvent-controlled, sol-gel route. substitutional doping of large sized Na+1 and La+3 at Ti4+ is confirmed X-ray diffraction (XRD) further supported Transmission Electron Microscopy (TEM) Photo-electron Spectroscopy (XPS). consequent increase in adsorbed hydroxyl groups surface results decrease pHIEP, which makes nanoparticle more prone to cationic methylene blue (MB) dye adsorption. MB removal was...

In MgB2 the correlation of microstructure with superconducting properties, in particular critical current density, requires powerful analytical tools. Critical densities and electrical resistivities different superconductors differ by orders magnitudes limiting mechanisms have not been fully understood. Granularity is one significant reason for reduced introduced intrinsically anisotropy Bc2 but also extrinsically material. enhancement doping another important challenge chemical analysis...

MgB 2 wires and tapes were prepared by the powder in tube method using different processing technologies thoroughly characterized for their superconducting properties. Either prereacted MgB2 (ex situ) or a mixture of Mg+2B (in was used as precursor powder. In some mixed with SiC. The critical current density (Jc) these found to differ orders magnitude, highest Jc being 104 A cm−2 at 10.5 T 4.2 K. microstructure investigated quantitative electron microscopy spectroscopy methods [B. Birajdar,...

CoFe2O4 (core)/BiFeO3 (shell) nanoparticles are prepared by varying the relative molar concentration of core and shell materials (40%CoFe2O4-60%BiFeO3, 50%CoFe2O4-50%BiFeO3, 60%CoFe2O4-40%BiFeO3). The core-shell nature is confirmed from transmission electron microscopy on these samples. A plot ΔM (=MFC-MZFC) vs temperature suggests presence two types spin dynamics: (a) particle size dependent blocking (b) spin-disorder. These dynamic processes found to contribute independently generation...

A large ferroelectric (FE) polarization and low bandgap are essential to improving the bulk photovoltaic response which is generation of photocurrent in polar non-centrosymmetric materials such as FE perovskite oxides. Among various oxides, Potassium Niobate (KNbO3, KNO) a promising material for applications its can be tuned effectively by strain, doping, or applying an electric field. In this work, using density functional theory calculations, we present insight into strain engineering...

Robuste Schichten aus mesoporösem TiO2 auf Ti lassen sich durch eine Kombination Anodisieren und selektivem Ätzen erhalten. Über 50 μm dicke sehr gleichmäßige mit Porengrößen von 5–10 nm können erzeugt werden (siehe Bild; FTO=fluordotiertes Zinnoxid). Die sind flexibel, haften fest an nach entsprechender Behandlung in farbstoffsensibilisierten Solarzellen eingesetzt werden.