rare earth features

Luminescence thermometry with rare earth doped …

Luminescence thermometry is a unique temperature detection technology with remote and noncontact functions. Rare earth doped materials have been widely used for luminescent thermometers due to their chemical stability and non-blinking properties. With rapid development of the nanoscience and nanotechnology, rare earth doped …


Rare Earths

This digital collection features materials related to rare earth elements, a group of 17 elements composed of scandium, yttrium, and the lanthanides. These abundant …


Rare Earth Elements | U.S. Geological Survey

Rare Earth Element Accumulation Processes Resulting in High-Value Metal Enrichments in Regolith. The Southeastern United States contains numerous granites of …


Rare Earths Statistics and Information | U.S.

The elemental forms of rare earths are iron gray to silvery lustrous metals that are typically soft, malleable, and ductile and usually reactive, especially at elevated temperatures or …


The Geology of Rare Earth Elements

Earth Science Records: Highest mountain, deepest lake, biggest tsunami and more. Diamonds: Learn about the properties of diamond, its many uses, and diamond …


Rare Earth Polyoxometalates

The catalytic, optical, and magnetic features of rare earth metal ions are well-known, as are the reversible multielectron redox and photoredox capabilities of polyoxomolybdates and polyoxotungstates. The combination of rare earth ions and polyoxometalates in discrete molecules and coordination polymers is of interest for the …


Spatiotemporal changes in desertified land in rare earth …

Study area. The Lingbei rare earth mining area is located in northern Dingnan County, Jiangxi Province, China, with geographical coordinates of 114° 58′ 04″ E–115° 10′ 56″ E and 24° 51′ 24″ N–25° 02′ 56″ N and a total area of 214 km 2.This area is located in a typical humid subtropical climate with abundant light and rain, average …


The impact of redox conditions on the rare earth element …

Rare Earth Elements (REEs) are crucial for a low-carbon economy but overuse pollutes ecosystems. Studying their behavior and source in agricultural soils provides vital insights for soil management. To address this, we collected an extensive dataset comprising 2901 topsoil and 733 subsoil samples from an agriculturally dominant …


Rare Earth – REIA

The rare-earth elements ( REE) are a group of 17 elements on the periodic table, consisting of the lanthanoid series, and scandium and yttrium. While some REEs are not particularly rare in terms of average abundance in the Earth's crust, they are seldom found in concentrations high enough for economic extraction, and global annual production ...


Rare-Earth Magnets Selection Guide: Types, Features, …

The most import feature of rare-earth magnets are the superior magnetic field of all natural magnets available. Also, rare-earth magnets have become less expensive and hence widely used in applications. The main use of rare-earth magnets are in hard drives, speakers, magnetic levitation turbines, roller coasters, and computers.


Structural Features of Rare Earth Oxides | SpringerLink

H. Otobe and A. Nakamura, Proc. Electrochemical Society, 99–19, 463 (1999). Google Scholar. G. Brauer, Structural and solid state chemistry of pure rare earth oxides, in Progress in the science and technology of the rare earths, Pergamon Press, Oxford Vol.2, 312, 1966. Google Scholar.


The Rarest Body Features Human Beings Can …

According to the NHS, there are 36 different blood groups and eight "main blood types." The latter consists of the familiar-sounding ones like O, A, B, and AB (positives and negatives), but let's talk rare. …


Features of the Properties of Rare-Earth Semiconductors

Abstract. It is shown that the unique features of the physical properties of rare-earth semiconductor compounds are based on the small values of the ionization potentials of the rare-earth elements included in them. The reason for this is the presence of 4f shells in the electronic structure of the elements. Authors:


Rare Earth hypothesis: Why we might really be alone …

NASA. The Rare Earth hypothesis focuses on numerous aspects of Earth and its environment that played a role in allowing complex life to develop. Some of the key factors Ward and Brownlee felt...


Untapped mineral riches: Angola looks beyond diamond …

The operation, which has an upfront capital cost of $217m (Kz182.21bn), will extract, concentrate, calcine and chemically refine the free dig material to produce a high-value mixed rare earth carbonate that contains 50% total rare earth oxide, of which 24% is neodymium and praseodymium.


Structural features and rare earth ion clustering

1. Introduction. In recent years phosphate glasses doped with rare-earth (RE) and transition metal (TM) ions have gained significant attention due to their potential applications in optical, photonic, and magneto-optical devices [1, 2].Phosphate glasses generally have lower melting point and dissovle more easily in aqueous solutions such …


Rare earth elements: Where in the world are they?

This infographic features data from the United States Geological Society (USGS) which reveals the countries with the largest known reserves of rare earth elements (REEs).


Spatio-Temporal Distribution and Environmental Behavior of …

Rare earth elements (REE) geochemistry can reveal the environmental information of solutes in river systems because REE is sensitive to hydro-geochemical changes in the earth's surface environment. This work collected the river water samples from Zhujiang River (the largest river in South China) to investigate the concentration, …


The impact of redox conditions on the rare earth element …

The studied site is located on the northern sedimentary margin of Morvan Mountain (Burgundy, France) on a structural limestone shelf dated from the Sinemurian stage sensu stricto (Mouterde, 1952; Fig. 1 a).This formation, which is approximately 5 to 10 m in thickness, consists of an irregular alternation of hard and compact crystalline grey …


How rare earth elements make modern …

How rare earth elements' hidden properties make modern technology possible. These 17 metals fine-tune light and generate powerful magnetic fields. In August, China finished constructing a maglev ...


REE

The group consists of yttrium and the 15 lanthanide elements (lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, …


U.S. production of critical rare-earth elements to start in 2024

Photo credit: Ford. On the production side of the equation, USA Rare Earth is expected to start delivering 600 metric tons of magnets annually, ramping up to full capacity of 1,200. Afterwards, Schneberger said they'll mimic that line, duplicate it to get production up to 4,800 metric tons per year, all out of their Oklahoma facility.


Introduction of rare-earth element Sc in alloy design to …

Tailoring the alloy composition, which induces the hard secondary phase to increase hardness and strength to improve the wear features, is a feasible approach for developing wear-resistant metal materials. Here, a group of (AlCoCrFeNi)_100 –x Sc_ x ( x = 0–2.0, at%) high-entropy alloys (HEAs) are designed and the phase compositions and …


Rare Earth Element and Trace Element Features of …

The rare earth element (REE) distribution patterns show obvious Eu anomaly with average δEu values of 0.664, and δCe anomalies of 1.044. REE characteristics are similar to those of wall rocks (regional metamorphic rocks), but different from those of the Dexing granodiorite porphyry and Damaoshan biotite granite.


Decoding China's dominance in global rare earth market

A rare earth mining giant it may be, after all, but the country has also been busy developing expertise in other related fields. As Politico has reported, China currently controls 85% of rare earth processing, as well as 92% of rare earth magnet production – a vital complement in military systems such as stealth aircraft and radars.


Effect of rare earth doping on the structural and magnetic features …

Rare earth Ce doped NiZn with composition of Ni 0.8 Zn 0.2 Ce x Fe 2−x O 4 at x = 0.00, 0.02, 0.04, 0.06, 0.08 and 0.10 were synthesized via sol-gel route. Rare earth Ce was doped to tune the structural and magnetic properties of the spinel ferrites. Therefore, the systematic effect of Ce on the structural, morphological and magnetic …


Boom in Mining Rare Earths Poses Mounting Toxic Risks

By Mike Ives • January 28, 2013. In November, the first shipment of raw "rare earth" minerals arrived at an $800 million processing plant on Malaysia's east coast near the home of Tan Bun Teet. The plant, run by Australia's Lynas Corporation, has since begun refining the rare earth metals, essential components in wind turbines, hybrid ...


How science could make recycling rare earth elements easier

Recycling rare earth elements is hard. Science is trying to make it easier. Recycling rare earth elements from existing high-tech products, like hard disk drives, might help meet demand for these ...


Halleck Creek: the next top dog in rare earths?

A new rare earths discovery in Wyoming could transform the market. Credit: Dane Rhys. Rare earth elements (REEs) have become an increasing focus of the mining industry as their demand grows as part of the increasing drive for new tech and electrification. However, trying to obtain these elements can ...


Rare Earth, Rare Earth Luminescence, Luminescent Rare Earth …

One important rule correlating structure and physicochemical property of rare earth elements is so-called lanthanide contraction, a term used in chemistry to describe different but closely related concepts associated with smaller than expected atomic radii of the elements in the lanthanide series [].In multi-electron atoms, the decrease in …