In this work, two groups of single domain YBCO grains with c-axis perpendicular (Pe-Y123) and parallel (Pa-Y123) to the top surface, were fabricated by the RE + 011 TSIG method under different supercooling temperature (ΔT). The effect of ΔT on the a-axis and c-axis growth rates on the surface (Ras and Rcs) and interior part (Rai and Rci) of YBCO grains were systemically investigated, and the magnetic

Superelasticity is a characteristic thermomechanical property in shape memory alloys (SMA), which is due to a reversible stress-induced martensitic transformation. Nano-compression experiments made possible the study of this property in Cu–Al–Ni SMA micropillars, showing an outstanding ultra-high mechanical damping capacity reproducible for thousands of cycles and reliable over the years. This scenario

The aqueous zinc-ion hybrid supercapacitor (ZIHC) has become an emerging energy storage device due to its safety and low cost. Herein, a new pizza-like heterostructure of Ti3C2Tx intercalated by N-doped-carbon-wrapped Bi2S3 is fabricated by in-situ growth. The specific capacitance of Ti3C2Tx/Bi2S3@N-C electrode is as high as 653 F g−1 at 1 A g−1, which is significantly higher than other binary composites

The electronic structure and optical property of Ba2Mg(PO4)2:Eu2+ under different pressures are calculated based on density functional theory. The energy band of Ba2Mg(PO4)2 generates impurity band and the transition probability increases through doping the Eu2+. The results show the lattice parameters decrease with the pressure increase, and the band gap increases with the pressure increase. The density

The evolution of the dynamic hysteresis with electrical field amplitude (E) and frequency (f) in the ferroelectric BaTiO3 (BTO) single crystal films prepared by pulsed laser deposition (PLD) has been investigated systematically. A noticeable transition from the low-frequency behavior to the high-frequency one was confirmed by observing the obtained hysteresis loops and the change of the physical properties

In this work, sodium niobate (NaNbO3) nanorods (NR) – YBCO superconductor composites with different wt% (0–2%) of NaNbO3 were prepared via a two-step process of hydrothermal and solid-state reaction, and its structural, electrical, and magnetic characterizations were carried out. XRD studies revealed that the orthorhombicity of YBCO is preserved in all nanocomposite samples. The superconducting transition

Herein, the supercapacitive characteristics of a novel nanocomposite based on defective mesoporous carbon (DMC) and MnO2 is presented. DMC was obtained via a facile and low-cost synthesis route and its interconnected pore network was served as host matrix for the growth of MnO2 nanoparticles to form the DMC/MnO2 nanocomposite. The deposition of MnO2 nanoparticles at the surface of DMC support was investigated

Herein, we report the fabrication of ethanol sensors with superior performance using gold (Au) nanoparticles decorated SnO2 hollow nanospheres (Au-SnO2 HNS). The SnO2 hollow nanospheres (SnO2 HNS) were synthesized by a hydrothermal method using carbon nanospheres as a sacrificial template. To improve their ethanol-sensing performance, Au nanoparticles were decorated on their surfaces. Morphological

Environmental-friendly relaxation ferroelectrics are anticipated as an excellent comprehensive energy storage performance materials due to their near-zero remnant polarization and slim hysteresis loop. Here, the relaxor ferroelectrics (1-x)Na0.5Bi0.5TiO3-x(Sr0.7La0.2)(Ti0.8Sn0.2)O3 ((1-x)NBT-xSLTS) ceramics with outstanding energy storage performances are synthesized by solid-state reaction. The dielectric

In this article, we investigate the lattice thermal conductivity in the thermoelectric Fe2VAl Heusler alloy by implementing a Green’s function approach to describe phonon-defect scattering mechanisms in the pristine and substituted compounds. Former calculations for pristine Fe2VAl largely overestimated the lattice thermal conductivity compared to the experimental value (28 W m−1 K−1). By considering

ZnO/NiO:rGO nanocomposite coated Ni foam binder-free electrode (ZNR/NF) and powder sample (ZNR) were synthesized through hydrothermal technique for supercapacitor applications. The synthesized powder sample have been characterized by XRD and FT-IR analysis to identify its crystalline nature and functional groups, respectively. Raman spectra of the prepared GO and rGO samples, elucidate that the rGO

A morphologically adjustable metal-organic framework (MOF) template and a unique hierarchical structure show improved electrochemical performance of electrode materials for supercapacitors. Herein, Zn/Co-MOF-derived zinc-cobalt oxide/nickel cobalt layered double hydroxides (Zn-Co-O/NiCo-LDH) hierarchical core/shell nanostructures on nickel foam (NF) were synthesized by simple methods and exhibited

Microstructure formation and transformation during electron beam selective melting (EBSM) is a unique process that has rarely been investigated, but can significantly influence the mechanical properties of parts. In this study, defect-free IN939 superalloy specimens were prepared and characterized using the EBSM method. It was found that the microstructures of the EBSM IN939 specimens consisted of

The durability and performance of an air electrode can have a crucial impact on rechargeable zinc-air batteries (ZABs). A typical air electrode fabricated using conductive carbon and a polymeric binder suffers rapid degradation during charging, stemming from oxygen bubbles erosion and carbon corrosion. This work presents a durable air electrode having a self-supported sulfur-doped manganese oxides

In this work, novel Bi2WO6-ZnBi2O4 p-n heterojunction was successfully synthesized through combination of sonochemical and hydrothermal procedures. The results revealed that the sonochemically prepared nanocomposites had spherical shape with amorphous structure which became crystalline particles with flak-like morphology after hydrothermal treatment. Bi2WO6-ZnBi2O4 nanocomposite with 20 wt. % ZnBi2O4

The development of an electrocatalyst for the efficient catalysis of methanol or urea is essential for solving energy and environmental problems. This study successfully synthesizes nickel selenide and 3D nickel diselenide architectures on N-doped carbon using a NaCl-assisted method and selenization temperature regulation. The 3D architecture of the nickel diselenide with N-doped carbon obtained by

The effect of non-magnetic Ga3+ ions doping at HoCrO3 (HoCr1-xGaxO3, 0 ≤ x ≤ 0.5) on the crystal structure, electronic structure, Raman spectra, and magnetic behaviours were systematically investigated. Most strikingly, a new spin-reorientation transition (Γ2 → Γ4 →Γ2) is triggered by Ga3+ doping in HoCrO3, and the spin configuration of Γ4 is obviously displayed in ZFC and FC curves when x > 0.2. According

In the production of activated carbons (ACs), glucose as a precursor is prone to producing the graphitic char intermediates after carbonization, which are difficult to be activated in the subsequent activation. In order to obtain a desirable specific surface area, either twice activation after carbonization or hydrothermal treatments of glucose before activation is applied. In this research, the direct

Multi-arc ion plating technology was used to prepare CrN composite anti-friction coating on the surface of vermicular graphite cast iron. The results show that as the Cr target current increases, the surface grains gradually become larger and less uniform，At different Cr target currents, the phases of the CrN coating are Cr, CrN and Cr2N. The critical load of the coating and matrix is 49.2 N. When

Highly crystalline K2GeF6 micropowders were prepared by co-precipitation in the hydrofluoric acid-water-alcohol solution and studied by means of the cathodoluminescence and time-resolved luminescence spectroscopy under synchrotron radiation excitation at 7 K. The nature of various intrinsic emissions was revealed. The luminescence band at 510 nm detected under excitation by photons with the energy

The influence of hydrogen on defect structure in pure titanium was systemically investigated using X-ray diffraction (XRD) and positron annihilation spectroscopy (PAS). The results showed that hydrogen damage was related to hydrogen concentration, and PAS provided a new idea for the study in the formation of hydride and open volume defects. XRD results showed that two types of titanium hydrides were

In this work, dopamine (DA) coated nano-TiO2 (DA@TiO2) modified polyvinylidene fluoride (PVDF) piezoelectric composite films (DA@TiO2/PVDF) with a high β-phase content are successfully fabricated by solvothermal method. The β-phase content of the DA2.0@TiO2/PVDF reaches 84.33%. Furthermore, DA2.0@TiO2/PVDF has the highest crystallinity (Xc) and melting enthalpy (ΔH). Due to synergistic effect between

The ideal sulfur supporting material for room-temperature sodium-sulfur (RT-NaS) batteries would concurrently incorporate adsorption capabilities, and high-electrical conductivity, which are essential for improving cycling stability and crucial for enhancing cycling stability and implementation in large-scale applications. In this work, the layered-like structure of TiO2-Ti3C2 Mxene was prepared by

A series of (8YSZ)1-x(CeO2)x (0≤x≤0.3) materials are synthesized by co-precipitation. Both crystalline structure and electrical conductivity of material are detected. (8YSZ)1-x(CeO2)x (0≤x≤0.3) belongs to cubic phase and (8YSZ)0.9(CeO2)0.1 is provided with the highest electrical conductivity. Select 8YSZ as solid electrolyte and (8YSZ)0.9(CeO2)0.1 as dense diffusion barrier to prepare an oxygen sensor

A series of different modifiers infused Dy3+ ions doped Alkali lead bismuth borate glasses were synthesized and their potential for photonic applications were analyzed through some mandatory characterizations like XRD, FTIR, Raman, optical absorption, photoluminescence and decay measurements. In this work, effort was taken to show the structural differences that occur in the host network when different

Nano-CuO have been grown on the surface of CdS nanorods by a simple solution-phase reaction, which greatly enhanced the hydrogen evolution ability of CdS. The physical chemistry properties of CuO/CdS nanocomposites were investigated by XRD, SEM, TEM, BET, XPS and electrochemical methods. The morphology and crystal structure of CdS were not influenced by the loading of Nano-CuO. And it was helpful to

Optical thermometry via luminescence intensity ratio (LIR) is often explored in the visible spectrum range of trivalent rare earth doped materials but much less so in the near infrared region. This work range, which can be explored in Nd3+ and Yb3+ doped materials, overlaps with the first and second biological window thus making these thermometers interesting for bio applications. In this work, proof

Magnetic-loss type electromagnetic wave (EMW) absorbing materials have been always focused on EMW absorbing field due to their excellent magnetic loss properties. However, the impedance mismatching issue still restrict the utilization for those materials. In this work, Ce2Fe17N3-δ was synthesized and further coated by silica (Ce2Fe17N3-δ@SiO2) for optimizing impedance matching and EMW absorbing performance