source:oilpriceSLAC National Accelerator Laboratory researchers discovered that nickel oxide superconductors contain a phase of quantum matter, known as charge density waves, that’s common in other unconventional superconductors. The new study shows that nickel oxide superconductors, which conduct electricity with no loss at higher temperatures than conventional superconductors do, contain a type of quantum matter called charge density waves, or CDWs, that can accompany superconductivity. In other ways, though, they’re surprisingly unique. Unconventional superconductors contain a mix of weird ...
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2022
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source:photonicsWUHAN, China, Sept. 9, 2022 — A recent demonstration by a team at Huazhong University of Science and Technology (HUST) spotlights the possibility of stable multiband lasing by rare earth (RE) elements. In the work, the research team used polymer-assisted thermal doping to fabricate RE-doped microcavities with ultrahigh intrinsic Q factors exceeding 108. The doping process did not introduce any obvious ion clustering or scattering loss. The ultrahigh intrinsic Q factor makes the process a natural platform for achieving lasing and further nonlinear phenomena that require low powe...
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2022
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source:eurekalertCrystals doped with rare-earth (RE) ions exhibit very narrow linewidths of the optical transitions. The narrow-line spectra of triply ionized RE elements cover the entire visible and infrared range. RE-doped materials are widely used as laser media, phosphors, scintillators, in solar cells, etc. Nowadays, the RE-based luminescence thermometry is successfully developing, demonstrating a wide working temperature range, high thermal sensitivity, and spatial resolution. In a magnetic field, some spectral lines split, and the magnitude of magnetic field can be determined by m...
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2022
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source:birminghamRare Earth materials used in high performance magnets for electronic devices will be recycled in a new facility at the University of Birmingham.The plant is a major milestone in the commercialisation of rare earth magnet recycling technology in the UK, offering a complete re-manufacturing process, taking magnets from end-of-life electric motors, electronic waste and components, reclaiming the valuable neodymium, iron and boron they contain, and reforming it back into commercial-grade magnetic materials.Rare earth magnets play a critical role in electronics devices ranging from...
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2022
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