قائمة الطعام
Strong pinning at high growth rates in Rare Earth Barium Cuprate. We present a simple liquid assisted processing (LAP) method, to be used in-situ during pulsed laser deposition growth to give both rapid growth rates (50 Hz deposition leading to >250 nm/min with a single plume) and strong pinning (improved x 5-10 over plain standard …
Recent advances in the performance and industrial production of high-temperature superconductors — particularly Rare Earth Barium Copper Oxide, or ReBCO— are enabling a new generation of large-scale superconducting magnets producing magnetic fields well in excess of 20 tesla for applications such as fusion energy, particle …
The rare earth ions are supposed to replace barium, since they have similar ionic radii and valences. In view of the small doping ratio, according to Vegard's law, the substitution can only result in little lattice parameter shift or peak shift.
In this paper, we employ the anisotropic bulk approximation to successfully implement the electromagnetic modeling of superconducting coils wound with rare-earth-barium-copper-oxide (REBCO) tapes ...
Rare earth barium copper oxide (REBCO) is the most researched and commercialized second-generation high-temperature superconducting material. Due to the anisotropic structure, strong deformation sensitivity, and central field errors caused by screening current effects, it is still a challenge for commercialization applications. In this …
Structural and chemical properties of superconducting rare-earth barium copper oxide/BaHfO3 nanocomposites with rare-earth mixtures - Volume 27 Issue S1 Skip to main content Accessibility help We use cookies to distinguish you from other users and to provide you with a better experience on our websites.
We performed first-principles theoretical calculations to examine the interactions between oxygen vacancy (VO) and rare-earth (RE) elements in barium titanate (BaTiO3), in order to clarify the mechanism of VO trapping by RE dopants, which affects the insulating reliability of BaTiO3-based multilayer ceramic capacitors (MLCC). It …
Risk assessment of rare earth elements, antimony, barium, boron, lithium, tellurium, thallium and vanadium in teas. Ewelina Kowalczyk, Lucas Givelet, Heidi Amlund, Jens Jørgen Sloth, Max Hansen. First …
Overdoping YBCO opens a promising route to extend the current carrying capabilities of rare-earth barium copper oxide (REBCO) coated conductors for …
In this study the effect of additions of 0.0015 to 0.0030 mole fraction of rare-earth oxides on the d.-c. resistivity of sintered barium titanate was investigated. The substitution may be ...
Rare earth-barium-copper-oxide (REBCO) coated conductors are promising conductors for high energy, high field and high temperature superconducting applications. In the case of epoxy-impregnated REBCO superconducting coils, however, excessive transverse stresses generated from winding, cooling, and Lorentz forces on the REBCO …
Mechanical properties of rare earth stannate pyrochlores. Jing Feng B. Xiao Z. Qu R. Zhou W. Pan. Materials Science, Physics. 2011. The RE2Sn2O7 series compounds (RE = La, Nb, Sm, Gd, Er, Yb) with a pyrochlore structure are prepared by co-precipitation method. The bulk, shear, Young's moduli, B/G, and Poisson's ratios are….
Rare-Earth-Free Barium Borostannate with Deep-Blue Light Emission. Yuan Lin, Guane Wang, +3 authors. J. Mao. Published 17 February 2021. Materials Science, Chemistry. Chemistry of Materials. Playing a crucial role in light-emitting diode (LED) illumination sources, the blue light-emitting materials are commonly obtained by …
On the basis of Ti-vacancy defect compensation mode, high-permittivity La- and Ce-doped barium titanate ceramics (BLTC) with perovskite structure, i.e., (Ba 1−x La x)(Ti 1−x/4−y Ce y)O 3, where x=0.01–0.05 and y=0.05, were prepared by conventional ceramic processing techniques. Dielectric characteristics, X-ray diffraction, scanning …
L. Yastrabik. The ceramic BaTiO3 doped with rare-earth ions Y, La, Nd, Sm, Lu, and Dy to 0.1–0.5 at. % was studied in the temperature range 160
March 19, 2019. Energy-efficient superconducting cable for future technologies. by Karlsruhe Institute of Technology. By means of a novel process, thin tapes of rare-earth …
Rare earth barium copper oxide (REBCO) is the most researched and commercialized second-generation high-temperature superconducting material. Due to …
ReBCO (Rare-earth barium copper oxide) high temperature superconducting tape conducts electricity with zero electrical resistance and can be manufactured in flexible, long lengths. These properties allow it to be formed into magnetic coils for the purpose of generating very large magnetic fields more efficiently and in a smaller size than other ...
Since the discovery of high-temperature superconductivity, significant progress in the fabrication of REBCO-based (Rare Earth Barium Copper mixed Oxides) thin-films superconductors has been achieved. In …
The super low thermal conductivity and ultrahigh thermal expansion of Ba 6 Ln 2 Al 4 O 15 (Ln = Gd, Dy, Er, and Yb) compounds with one-sixth of the oxygen vacancy have been synthesized by the solid-state reaction method. The lowest thermal conductivity of Ba 6 Yb 2 Al 4 O 15 was found to be 0.98 W/(m.K) at 1073 K. The large concentration …
Rare-earth metal doped barium zirconate as electrolyte and electrode material for PCFC has shown a lot of promises. In fact, barium zirconate (BaZrO 3) skeleton has been extensively investigated as electrode and electrolyte materials for the PCFCs [22]. This is due to its appreciable proton conductivity and chemical stability at …
Here, rare earth (RE) cerium (Ce)-doped W-type barium ferrites (Ba 1-y Ce y Ni 2 Fe 15.4 O 27, y = 0.1, 0.2, 0.3, 0.4, 0.5, 0.6) are prepared by a sol-gel approach. The influences …
Up to x c, the rare earths investigated, (except for the small ion Lu), substitute for barium, and the main compensation mechanism is an electronic mechanism. At high concentrations ( x > x c ) in the case of large ions ( e.g. La), substitution is at barium sites, with the creation of titanium vacancies, whereas intermediate ions ( e.g. Y ...
In order to use the thin films of YBa2Cu3O7−δ (YBCO) and REBCO [RE (rare-earth) = Sm, Gd, Eu etc.], members of the HTS family, for future technological applications, the enhancement of Jc over ...
Over the last 20 years, technologies for manufacturing rare-earth barium copper oxide (REBCO)-coated conductors have undergone a steady development. …
The material is rare-earth barium-copper oxide (REBCO for short), whose superconductivity has been known since 1987. However, long lengths of the superconductor can only be manufactured in the ...
The superior electromechanical properties of second-generation high-temperature superconducting rare-earth barium copper oxide (REBCO) coated conductor tapes make them viable candidates for high magnetic field applications. To characterize their electromechanical properties (EMPs) under operating conditions, the critical current …
Thus, the aim of the project was to evaluate the contamination levels of rare earth elements (REEs) including lanthanides, scandium (Sc) and yttrium (Y) and also antimony (Sb), barium (Ba), boron ...
Quench and mechanical behaviors are critical issues in high temperature superconducting coils. In this paper, the quench characteristics in the rare earth barium copper oxide (REBCO) pancake coil at 4.2 K are analyzed, and a two-dimensional (2D) axisymmetric electro-magneto-thermal model is presented. The effects of the constituent materials, …
Since the discovery of high-temperature superconductivity, significant progress in the fabrication of REBCO-based (Rare Earth Barium Copper mixed Oxides) thin-films superconductors has been achieved. In our review, we described the approaches and possibilities of the improvement of superconducting properties by the introduction of …
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