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source:natureAbstractWe investigated the random lasing process and Replica Symmetry Breaking (RSB) phenomenon in neodymium ions (Nd3+) doped lead-germanate glass–ceramics (GCs) containing MgO. Glass samples were fabricated by conventional melt-quenching technique and the GCs were obtained by carefully devitrifying the parent glasses at 830 °C for different time intervals. The partial crystallization of the parent glasses was verified by X-ray diffraction. Photoluminescence (PL) enhancement of ≈ 500% relative to the parent glasses was observed for samples with a higher crystallinity degree...
Release time: 2022 - 11 - 15
viewed:1
source:wyomingnewsA legislative committee advanced a bill that would authorize the state to apply for primacy over federal permitting and licensing that guides the management of rare-earth-element mining’s radioactive byproducts.Lawmakers and industry representatives believe the Wyoming Department of Environmental Quality can permit and oversee the management of rare earth materials containing uranium and thorium more quickly and efficiently than the federal Nuclear Regulatory Commission, which may entice more rare earth mining in the state.“We’re laying the groundwork here to attract these co...
Release time: 2022 - 11 - 14
viewed:1
source:economyMining rare earth has long been considered a dirty business, as it can lead to water and soil pollution, but a new technology developed by Chinese scientists may reverse the trend, offering a greener alternative for the industry.Rare earth elements (REEs), especially heavy REEs, are an essential part of many high-tech devices, from the iPhone to the Tesla electric engine to LED lights. More than 90 percent of the global heavy REE demand is sourced from ion-adsorption deposits, which form within weathering crusts. However, conventional mining applies excessive usage of chemical ag...
Release time: 2022 - 11 - 12
viewed:1
source:newswiseNewswise — Researchers from the Department of Energy’s Critical Materials Institute (CMI) and Ames National Laboratory have improved the properties of a rare-earth-free permanent magnet material and demonstrated the process can be upscaled for manufacturing. The researchers developed a new method of manufacturing manganese bismuth (MnBi) magnets based on microstructure engineering. This process is a step towards making compact, energy-efficient motors without the use of rare earths.High-power permanent magnets are increasingly important for a variety of renewable energy technolo...
Release time: 2022 - 11 - 10
viewed:1
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