Article 31 – Hysteresis phenomena in Cd2P2S6 layered crystals
Abstract: The results of the study of the temperature dependence of the dielectric permittivity of Cd2P2S6 crystals are presented. It is shown that in the temperature range 80–420 K there are three regions in which hysteresis phenomena are observed. At high temperatures (T > 320 K) there is an activation change of the dielectric losses associated with the increased […]
Article 30 – The influence of electric field on the anisotropic dispersion of the flexocoupling induced phonons and ferrons in van der Waals ferrielectrics
Abstract: As it has been shown recently, the influence of the flexoelectric coupling (shortly “flexocoupling”) on the fluctuations of electric polarization and elastic strains can lead to the principal changes of the dispersion law of soft optical and acoustic phonons (shortly “flexophonons”) and ferrons (shortly “flexoferrons”) in van der Waals ferrielectrics. Analytical results, derived in […]
Article 29 – The impact of morphological structure and flexo-chemical strains on the electric transport mechanisms in molybdenum-disulfide-oxide nanoflakes
Abstract: Electric conduction mechanisms in pressed powder samples consisting of molybdenum-disulfide-oxide (MoSxOy) nanoflakes depending on their content and structure have been investigated. The MoSxOy nanoflakes were synthesized in the temperature range of 130 °C–180 °C by reaction of (NH4)6Mo7O24 with thiourea in aqueous solution followed by aerial oxidation. The chemical composition and structure of the […]
Article 28 – Osteogenic Differentiation Triggered by Intracellular Magnetoelectric Stimulation of Core–Shell Nanotransducers under Remotely Applied Magnetic Fields
Abstract: Magnetoelectric nanoparticles (MENPs), combining a magnetostrictive core with a piezoelectric shell, offer a promising route for remote-controlled biomedical applications by converting external magnetic fields into electric cues. However, the clinical translation of these materials remains limited due to the toxicity of high-performance piezoelectric materials, which typically contain lead. Previously, we developed lead-free MENPs comprising […]
Article 27 – Colossal dielectric response of Hf𝑥Zr1−𝑥O2 nanoparticles
Abstract: We observed a colossal dielectric response of small (5–10 nm) oxygen-deficient Hf𝑥Zr1−𝑥O2 nanoparticles (𝑥=1–0.4), prepared by solid-state organonitrate synthesis. The effective dielectric permittivity of the pressed Hf𝑥Zr1−𝑥O2 nanopowders has a pronounced maximum at 38–88∘C, the shape of which can be fitted by the Curie-Weiss type dependence modified for the diffuse ferroelectric-paraelectric phase transition. The […]
Article 26 – Wireless Magnetoelectric Stimulation Platform Orchestrating Multicellular Coupling in Complex Neurovascularized Tissue Regeneration
Abstract: Bone regeneration is a well-orchestrated biological process involving coordinate efforts of multiple cells, cytokines, and signals, among which nerves play a dominant role in regulating osteogenesis. Draw inspiration from the inherent electroactive features of bone and nerve, bioelectric implant providing wireless delivery of electrical stimulation (ES), is an emerging alternative to conventional invasive electrode-based […]
Article 25 – Metal-free heteroatom doping of carbon nitride for enhanced photocatalytic hydrogen peroxide production
Abstract: The photocatalytic production of hydrogen peroxide (H2O2) from water is a promising approach for achieving solar-to-chemical energy conversion as a suitable alternative to obtain hydrogen fuel. Herein, we investigate the effect of heteroatom doping (B, O, P, and S) on the structural, electronic, and photocatalytic properties of graphitic carbon nitride (C3N4) for H2O2 production. […]
Article 24 – Hole Polaronic Confinement in (111) Yttria-Stabilised Zirconia
Abstract: Yttria-stabilized zirconia (YSZ) is the benchmark oxygen-ion conductor and is widely regarded as electronically inert under oxidizing conditions. Yet its electrical behavior at the nanoscale remains unsettled. While bulk YSZ exhibits predominantly ionic transport, electronic contributions have only been reported under highly defective, porous, or strong-field conditions. Here, we demonstrate that ultrathin epitaxial YSZ […]
Article 23 – Architecture-Driven Functional Coupling in Vertically Aligned Nanocomposites
Abstract: Vertically aligned nanocomposites (VANs) are self-assembled thin-film architectures in which phase distribution, interfacial density, and strain fields are defined concurrently during growth. Nanoscale vertical alignment and coherent interfaces generate anisotropic confinement and directional connectivity, thereby modifying ionic, electronic, optical, and magnetic responses across oxide, oxide-metal, oxide-nitride, and oxide-alloy systems. This review examines how growth […]
Article 22 – Polarization stability in lead-free Na0.5Bi0.5TiO3 ceramics: Grain size and temperature effects
Abstract: The stability of the polarization state in Na0.5Bi0.5TiO3 (NBT) ceramics has been a long-standing problem for its use in piezoelectric applications at elevated temperatures. It has been generally believed that the polarization state, depolarization temperature, and depolarization process are all linked to the grain size in these materials. In this work, we perform a […]
