Single crystalline orthorhombic phase tungsten trioxide monohydrate (O-WO3·H2O, space group: Pmnb) nanoplates with a clear morphology and uniform size distribution have been synthesized by the hydrothermal method fabricated on surface of fluorine doped tin oxide (FTO) coated glass substrates selective exposure crystal facet finger rubbing method. The can easily arrange O-WO3·H2O along (020) FTO substrate. nanoplate be converted to monoclinic WO3 (γ-WO3, P21/n) dominant (002) without...

Two-dimensional (2D) polar magnets have received considerable attention due to their intrinsic ability host Dzyaloshinskii–Moriya interaction (DMI), which is crucial for generating topological spin textures such as skyrmions and bimerons. The switch between bimerons considered be important developing future computing architectures based on multiple different bits. Here, using first-principles calculations Monte Carlo simulations, we predict that the FeSnN3 monolayer with a structure 2D...

(001)-oriented monoclinic nanorod and microplate WO3 films are fabricated on commercial FTO-coated glass substrates by a rubbing seed layer spin-coating assisted hydrothermal reactions. The film obtained the reactions is more regular perpendicular to substrate.

A tremendous amount of research is currently focused on two-dimensional (2D) magnetic semiconductors because their remarkable physical properties and diverse applications. However, applications are highly limited by the low Curie temperature (TC). Based first-principles calculations Monte Carlo simulations, we demonstrate that 2D InCrTe3 monolayers ideal candidates for next-generation spintronics We show have thermodynamical mechanical stability. The couplings between Cr atoms strong...

Tea is the most popular and widely consumed beverage worldwide, especially black tea. Summer tea has a bitter astringent taste low aroma compared to spring due higher content of polyphenols lower amino acids. Microbial fermentation routinely used improve flavor various foods. This study analyzed relationship between quality tea, metabolic characteristics, microbial communities after stuck in summer Stuck decreased bitterness, astringency sourness, freshness, increased sweetness, mellowness,...

In this paper, dendritic iron wire array films with different morphologies were prepared on Cu/ITO and slide ITO glass substrates by electrodeposition. The of Fe obtained at conditions characterized scanning electron microscopy. growth mechanism the is described changing ratio deposition rate to mass transport (R) according experimental results. variable R affects final structure products. Especially, dendrites can grow vertically layer layer. photoelectrochemical properties indicate that...

Spontaneous ferroelectric topological domains are observed in epitaxial BFO films using PFM. The uniform arrays of centre domain structures and their reversible switching realized utilizing PFM tip-fields assisted by the mobile charges.

Vertically and laterally oriented cobalt dendrite films with or without dendritic structures were synthesized by cathodic electrodeposition under different experimental conditions. The morphology of Co deposits was varied significantly depending on deposition conditions such as applied potential, precursor concentration especially pH value. crystal growth along the [110] direction is preferred. possible mechanism discussed supposing differing areas. Results glucose electrooxidation...

Epitaxial strain can induce ferroelectricity and enhance the polarization in inorganic hybrid perovskite material CsSnI₃ for energy applications.

To design a multiferroic material at atomic scale, strong spin-lattice and charge-lattice couplings play crucial roles. Our first-principles calculation on (SrCoO3)1/(SrTiO3)1 superlattices, with above coupling properties, yields rich physical phase diagram as function of epitaxial strain. In particular, robust ferroelectric ferromagnetic insulator Pc symmetry is stabilized tensile strain Δa/a0 = 0.86%-5.53%. The polarization can be large 36 μC/cm(2) magnetic moment reach 6 μB per unit cell....

By phonon band structure calculations and Monte Carlo simulations, we propose that 2D MnSi MnC_0.5Si_0.5 monolayers could exhibit mechanical stability room temperature half-metallic properties.

Electrical control of conductivity and magnetism in two-dimensional (2D) ferroelectric (FE) materials have attracted immense attention due to their fascinating properties potential applications designing field-effect transistors high-density multistate data storage. Based on first-principles calculations crystal field theory, we present an approach obtain 2D intrinsic asymmetric multiferroics by replacing the In atom In2X3 monolayer (X = S, Se) with Cr atom. Interestingly, it is found that...

In recent years, one of the urgent issues for two dimensional (2D) magnetic materials is to find efficient ways in enhancing ordering temperature Tc. It believed that an in-plane (IP) compressive strain can greatly enhance interatomic interactions by shortening chemical bond length if at all possible, leading enlarged spin exchange and possibly higher However, a large usually favors antiferromagnetic (AFM) due growing dominance Pauli exclusion principle, contradiction with common requirement...

The coupling of topological electronic states and ferroelectricity is highly desired due to their abundant physical phenomenon potential applications in multifunctional devices. However, it difficult achieve such a single ferroelectric (FE) monolayer because the two polarized are topologically equivalent. Here, we demonstrate that symmetry can be broken by constructing Janus structure FE monolayer. We illustrate general idea replacing layer Te atoms In2Te3 with S atoms. Using...

In this work, the thermoelectric (TE) properties of CrI3 monolayer are studied using Boltzmann transport equation based on energy band from first-principles calculation. A strong spin-dependent Seebeck phenomenon is found. The positive (spin-Seebeck) coefficient at 800 K reaches up to 291 (263) μV K−1 describing p-type semiconductor character and figure merit as high 0.95, mainly originating unique structure monolayer. This indicates that may be a potential candidate for low dimensional spin...

Abstract First-principles calculations have been carried out to study the structural, electric and magnetic properties of Ni 3 TeO 6 -type A 2 FeMoO compounds (A = Sc, Lu). Their behave like room-temperature ferrielectric ferrimagnetic insulators where polarization comes from un-cancelled antiparallel dipoles (A(1), Fe 3+ ) (A(2), Mo ion groups magnetization moments "Equation missing"<!-- image only, no MathML or LaTex --> ions. The net increases with A’s ionic radius is 7.1 8.7 μCcm −2 for...

Two-dimensional (2D) materials with intrinsic ferromagnetism and piezoelectricity have received growing attention due to their potential applications in nanoscale spintronic devices. However, are highly limited by the low Curie temperatures (TC) small piezoelectric coefficients. Here, using first-principles calculations, we successfully predicted that BiCrX3 (X = S, Se, Te) monolayers simultaneously possess replacing one layer of Bi atoms Cr Bi2X3 monolayers. Our results demonstrate not only...

Two-dimensional (2D) van der Waals (vdW) ferromagnetic (FM) materials have recently received attention due to their potential applications in next-generation spintronic devices. However, the reduced dimensionality and weak interlayer vdW interaction seriously suppress magnetic Curie temperature Tc, raising concern with enhancing FM coupling. It is argued that proper ion intercalation may enhance coupling by establishing strong chemical bonding. In this work, issue a 2D Fe3GeTe2 (FGT) bilayer...

Substrate strain offers an extra dimension in enriching the functionality of perovskite thin films. The recent observation coexistence ferromagnetism (FM) and antiferromagnetism (AFM) ${\mathrm{LuMnO}}_{3}$ films on (110)-oriented ${\mathrm{YAlO}}_{3}$ substrate illustrated another interesting example [Phys. Rev. Lett. 111, 037201 (2013); Phys. B 94, 054423 (2016)]. FM signal arises from a atomic layer near substrate. We propose this paper that vertical relaxation may stabilize structure...